diff --git a/metropolis/node/build/fwprune/BUILD.bazel b/metropolis/node/build/fwprune/BUILD.bazel
index bc22665..e29ac7e 100644
--- a/metropolis/node/build/fwprune/BUILD.bazel
+++ b/metropolis/node/build/fwprune/BUILD.bazel
@@ -7,7 +7,7 @@
     visibility = ["//visibility:private"],
     deps = [
         "//metropolis/node/build/fsspec",
-        "//metropolis/pkg/kmod",
+        "//osbase/kmod",
         "@org_golang_google_protobuf//encoding/prototext",
         "@org_golang_google_protobuf//proto",
     ],
diff --git a/metropolis/node/build/fwprune/main.go b/metropolis/node/build/fwprune/main.go
index 4f26fa0..e76e5d0 100644
--- a/metropolis/node/build/fwprune/main.go
+++ b/metropolis/node/build/fwprune/main.go
@@ -20,7 +20,7 @@
 	"google.golang.org/protobuf/proto"
 
 	"source.monogon.dev/metropolis/node/build/fsspec"
-	"source.monogon.dev/metropolis/pkg/kmod"
+	"source.monogon.dev/osbase/kmod"
 )
 
 // linkRegexp parses the Link: lines in the WHENCE file. This does not have
diff --git a/metropolis/node/build/kconfig-patcher/BUILD.bazel b/metropolis/node/build/kconfig-patcher/BUILD.bazel
index e838f9e..278db21 100644
--- a/metropolis/node/build/kconfig-patcher/BUILD.bazel
+++ b/metropolis/node/build/kconfig-patcher/BUILD.bazel
@@ -12,7 +12,7 @@
     embed = [":kconfig-patcher_lib"],
     visibility = [
         "//metropolis/node:__pkg__",
-        "//metropolis/test/ktest:__pkg__",
+        "//osbase/test/ktest:__pkg__",
     ],
 )
 
diff --git a/metropolis/node/build/mkerofs/BUILD.bazel b/metropolis/node/build/mkerofs/BUILD.bazel
index 73fda98..0befb4c 100644
--- a/metropolis/node/build/mkerofs/BUILD.bazel
+++ b/metropolis/node/build/mkerofs/BUILD.bazel
@@ -7,7 +7,7 @@
     visibility = ["//visibility:public"],
     deps = [
         "//metropolis/node/build/fsspec",
-        "//metropolis/pkg/erofs",
+        "//osbase/erofs",
     ],
 )
 
diff --git a/metropolis/node/build/mkerofs/main.go b/metropolis/node/build/mkerofs/main.go
index ac0042a..b5d5568 100644
--- a/metropolis/node/build/mkerofs/main.go
+++ b/metropolis/node/build/mkerofs/main.go
@@ -30,7 +30,7 @@
 	"strings"
 
 	"source.monogon.dev/metropolis/node/build/fsspec"
-	"source.monogon.dev/metropolis/pkg/erofs"
+	"source.monogon.dev/osbase/erofs"
 )
 
 func (spec *entrySpec) writeRecursive(w *erofs.Writer, pathname string) {
diff --git a/metropolis/node/build/mkimage/BUILD.bazel b/metropolis/node/build/mkimage/BUILD.bazel
index ad88acb..41ce603 100644
--- a/metropolis/node/build/mkimage/BUILD.bazel
+++ b/metropolis/node/build/mkimage/BUILD.bazel
@@ -10,8 +10,8 @@
     visibility = ["//visibility:private"],
     deps = [
         "//metropolis/node/build/mkimage/osimage",
-        "//metropolis/pkg/blkio",
-        "//metropolis/pkg/blockdev",
+        "//osbase/blkio",
+        "//osbase/blockdev",
     ],
 )
 
diff --git a/metropolis/node/build/mkimage/main.go b/metropolis/node/build/mkimage/main.go
index 7de951e..3695054 100644
--- a/metropolis/node/build/mkimage/main.go
+++ b/metropolis/node/build/mkimage/main.go
@@ -34,8 +34,8 @@
 	"os"
 
 	"source.monogon.dev/metropolis/node/build/mkimage/osimage"
-	"source.monogon.dev/metropolis/pkg/blkio"
-	"source.monogon.dev/metropolis/pkg/blockdev"
+	"source.monogon.dev/osbase/blkio"
+	"source.monogon.dev/osbase/blockdev"
 )
 
 //go:embed metropolis/node/core/abloader/abloader_bin.efi
diff --git a/metropolis/node/build/mkimage/osimage/BUILD.bazel b/metropolis/node/build/mkimage/osimage/BUILD.bazel
index cfbf736..9799b81 100644
--- a/metropolis/node/build/mkimage/osimage/BUILD.bazel
+++ b/metropolis/node/build/mkimage/osimage/BUILD.bazel
@@ -6,10 +6,10 @@
     importpath = "source.monogon.dev/metropolis/node/build/mkimage/osimage",
     visibility = ["//visibility:public"],
     deps = [
-        "//metropolis/pkg/blockdev",
-        "//metropolis/pkg/efivarfs",
-        "//metropolis/pkg/fat32",
-        "//metropolis/pkg/gpt",
+        "//osbase/blockdev",
+        "//osbase/efivarfs",
+        "//osbase/fat32",
+        "//osbase/gpt",
         "@com_github_google_uuid//:uuid",
     ],
 )
diff --git a/metropolis/node/build/mkimage/osimage/osimage.go b/metropolis/node/build/mkimage/osimage/osimage.go
index d0ccaef..f877ded 100644
--- a/metropolis/node/build/mkimage/osimage/osimage.go
+++ b/metropolis/node/build/mkimage/osimage/osimage.go
@@ -25,10 +25,10 @@
 
 	"github.com/google/uuid"
 
-	"source.monogon.dev/metropolis/pkg/blockdev"
-	"source.monogon.dev/metropolis/pkg/efivarfs"
-	"source.monogon.dev/metropolis/pkg/fat32"
-	"source.monogon.dev/metropolis/pkg/gpt"
+	"source.monogon.dev/osbase/blockdev"
+	"source.monogon.dev/osbase/efivarfs"
+	"source.monogon.dev/osbase/fat32"
+	"source.monogon.dev/osbase/gpt"
 )
 
 var (
diff --git a/metropolis/node/build/mkverity/BUILD.bazel b/metropolis/node/build/mkverity/BUILD.bazel
index caabc26..a748b86 100644
--- a/metropolis/node/build/mkverity/BUILD.bazel
+++ b/metropolis/node/build/mkverity/BUILD.bazel
@@ -15,5 +15,5 @@
     srcs = ["mkverity.go"],
     importpath = "source.monogon.dev/metropolis/node/build/mkverity",
     visibility = ["//visibility:private"],
-    deps = ["//metropolis/pkg/verity"],
+    deps = ["//osbase/verity"],
 )
diff --git a/metropolis/node/build/mkverity/mkverity.go b/metropolis/node/build/mkverity/mkverity.go
index f44b601..ff2807b 100644
--- a/metropolis/node/build/mkverity/mkverity.go
+++ b/metropolis/node/build/mkverity/mkverity.go
@@ -19,7 +19,7 @@
 // outputs a Verity mapping table on success.
 //
 // For more information, see:
-// - source.monogon.dev/metropolis/pkg/verity
+// - source.monogon.dev/osbase/verity
 // - https://gitlab.com/cryptsetup/cryptsetup/wikis/DMVerity
 package main
 
@@ -30,7 +30,7 @@
 	"log"
 	"os"
 
-	"source.monogon.dev/metropolis/pkg/verity"
+	"source.monogon.dev/osbase/verity"
 )
 
 // createImage creates a dm-verity target image by combining the input image
diff --git a/metropolis/node/core/BUILD.bazel b/metropolis/node/core/BUILD.bazel
index 8605534..938a7d7 100644
--- a/metropolis/node/core/BUILD.bazel
+++ b/metropolis/node/core/BUILD.bazel
@@ -34,13 +34,13 @@
         "//metropolis/node/core/rpc/resolver",
         "//metropolis/node/core/time",
         "//metropolis/node/core/update",
-        "//metropolis/pkg/logtree",
-        "//metropolis/pkg/pstore",
-        "//metropolis/pkg/supervisor",
-        "//metropolis/pkg/sysctl",
-        "//metropolis/pkg/tpm",
         "//metropolis/proto/api",
         "//metropolis/version",
+        "//osbase/logtree",
+        "//osbase/pstore",
+        "//osbase/supervisor",
+        "//osbase/sysctl",
+        "//osbase/tpm",
         "//version",
         "@com_github_cenkalti_backoff_v4//:backoff",
         "@com_github_containerd_containerd//:containerd",
diff --git a/metropolis/node/core/cluster/BUILD.bazel b/metropolis/node/core/cluster/BUILD.bazel
index 4da6c76..665f94d 100644
--- a/metropolis/node/core/cluster/BUILD.bazel
+++ b/metropolis/node/core/cluster/BUILD.bazel
@@ -21,10 +21,10 @@
         "//metropolis/node/core/rpc",
         "//metropolis/node/core/rpc/resolver",
         "//metropolis/node/core/update",
-        "//metropolis/pkg/supervisor",
         "//metropolis/proto/api",
         "//metropolis/proto/common",
         "//metropolis/proto/private",
+        "//osbase/supervisor",
         "@com_github_cenkalti_backoff_v4//:backoff",
         "@org_golang_google_grpc//:go_default_library",
         "@org_golang_google_protobuf//proto",
diff --git a/metropolis/node/core/cluster/cluster.go b/metropolis/node/core/cluster/cluster.go
index 323c8ca..1d3135c 100644
--- a/metropolis/node/core/cluster/cluster.go
+++ b/metropolis/node/core/cluster/cluster.go
@@ -34,9 +34,9 @@
 	"source.monogon.dev/metropolis/node/core/network"
 	"source.monogon.dev/metropolis/node/core/roleserve"
 	"source.monogon.dev/metropolis/node/core/update"
-	"source.monogon.dev/metropolis/pkg/supervisor"
 	apb "source.monogon.dev/metropolis/proto/api"
 	cpb "source.monogon.dev/metropolis/proto/common"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 type Manager struct {
diff --git a/metropolis/node/core/cluster/cluster_bootstrap.go b/metropolis/node/core/cluster/cluster_bootstrap.go
index 3e5f745..0c9d7fe 100644
--- a/metropolis/node/core/cluster/cluster_bootstrap.go
+++ b/metropolis/node/core/cluster/cluster_bootstrap.go
@@ -30,7 +30,7 @@
 	"source.monogon.dev/metropolis/node/core/curator"
 	"source.monogon.dev/metropolis/node/core/identity"
 	"source.monogon.dev/metropolis/node/core/roleserve"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/supervisor"
 
 	apb "source.monogon.dev/metropolis/proto/api"
 	cpb "source.monogon.dev/metropolis/proto/common"
diff --git a/metropolis/node/core/cluster/cluster_join.go b/metropolis/node/core/cluster/cluster_join.go
index cdbf0b3..18cfa4e 100644
--- a/metropolis/node/core/cluster/cluster_join.go
+++ b/metropolis/node/core/cluster/cluster_join.go
@@ -14,9 +14,9 @@
 	"source.monogon.dev/metropolis/node/core/identity"
 	"source.monogon.dev/metropolis/node/core/rpc"
 	"source.monogon.dev/metropolis/node/core/rpc/resolver"
-	"source.monogon.dev/metropolis/pkg/supervisor"
 	cpb "source.monogon.dev/metropolis/proto/common"
 	ppb "source.monogon.dev/metropolis/proto/private"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 // join implements Join Flow of an already registered node.
diff --git a/metropolis/node/core/cluster/cluster_register.go b/metropolis/node/core/cluster/cluster_register.go
index 2389eaf..36f7394 100644
--- a/metropolis/node/core/cluster/cluster_register.go
+++ b/metropolis/node/core/cluster/cluster_register.go
@@ -17,7 +17,7 @@
 	"source.monogon.dev/metropolis/node/core/identity"
 	"source.monogon.dev/metropolis/node/core/rpc"
 	"source.monogon.dev/metropolis/node/core/rpc/resolver"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/supervisor"
 
 	ipb "source.monogon.dev/metropolis/node/core/curator/proto/api"
 	apb "source.monogon.dev/metropolis/proto/api"
diff --git a/metropolis/node/core/clusternet/BUILD.bazel b/metropolis/node/core/clusternet/BUILD.bazel
index 1ccce66..5ab1d8a 100644
--- a/metropolis/node/core/clusternet/BUILD.bazel
+++ b/metropolis/node/core/clusternet/BUILD.bazel
@@ -1,5 +1,5 @@
 load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
-load("//metropolis/test/ktest:ktest.bzl", "ktest")
+load("//osbase/test/ktest:ktest.bzl", "ktest")
 
 go_library(
     name = "clusternet",
@@ -16,9 +16,9 @@
         "//metropolis/node/core/curator/watcher",
         "//metropolis/node/core/localstorage",
         "//metropolis/node/core/network",
-        "//metropolis/pkg/event",
-        "//metropolis/pkg/supervisor",
         "//metropolis/proto/common",
+        "//osbase/event",
+        "//osbase/supervisor",
         "@com_github_cenkalti_backoff_v4//:backoff",
         "@com_github_vishvananda_netlink//:netlink",
         "@com_zx2c4_golang_wireguard_wgctrl//:wgctrl",
@@ -36,10 +36,10 @@
         "//metropolis/node/core/localstorage",
         "//metropolis/node/core/localstorage/declarative",
         "//metropolis/node/core/network",
-        "//metropolis/pkg/event/memory",
-        "//metropolis/pkg/supervisor",
         "//metropolis/proto/common",
         "//metropolis/test/util",
+        "//osbase/event/memory",
+        "//osbase/supervisor",
         "@com_zx2c4_golang_wireguard_wgctrl//:wgctrl",
         "@com_zx2c4_golang_wireguard_wgctrl//wgtypes",
     ],
diff --git a/metropolis/node/core/clusternet/clusternet.go b/metropolis/node/core/clusternet/clusternet.go
index cde3e0e..1c3c7b3 100644
--- a/metropolis/node/core/clusternet/clusternet.go
+++ b/metropolis/node/core/clusternet/clusternet.go
@@ -34,8 +34,8 @@
 	"source.monogon.dev/metropolis/node/core/curator/watcher"
 	"source.monogon.dev/metropolis/node/core/localstorage"
 	"source.monogon.dev/metropolis/node/core/network"
-	"source.monogon.dev/metropolis/pkg/event"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/event"
+	"source.monogon.dev/osbase/supervisor"
 
 	apb "source.monogon.dev/metropolis/node/core/curator/proto/api"
 	cpb "source.monogon.dev/metropolis/proto/common"
diff --git a/metropolis/node/core/clusternet/clusternet_test.go b/metropolis/node/core/clusternet/clusternet_test.go
index 7089cc7..f07f3e5 100644
--- a/metropolis/node/core/clusternet/clusternet_test.go
+++ b/metropolis/node/core/clusternet/clusternet_test.go
@@ -17,9 +17,9 @@
 	"source.monogon.dev/metropolis/node/core/localstorage"
 	"source.monogon.dev/metropolis/node/core/localstorage/declarative"
 	"source.monogon.dev/metropolis/node/core/network"
-	"source.monogon.dev/metropolis/pkg/event/memory"
-	"source.monogon.dev/metropolis/pkg/supervisor"
 	"source.monogon.dev/metropolis/test/util"
+	"source.monogon.dev/osbase/event/memory"
+	"source.monogon.dev/osbase/supervisor"
 
 	apb "source.monogon.dev/metropolis/node/core/curator/proto/api"
 	cpb "source.monogon.dev/metropolis/proto/common"
diff --git a/metropolis/node/core/consensus/BUILD.bazel b/metropolis/node/core/consensus/BUILD.bazel
index 359b6dc..eeb8d3b 100644
--- a/metropolis/node/core/consensus/BUILD.bazel
+++ b/metropolis/node/core/consensus/BUILD.bazel
@@ -16,13 +16,13 @@
         "//metropolis/node/core/consensus/client",
         "//metropolis/node/core/identity",
         "//metropolis/node/core/localstorage",
-        "//metropolis/pkg/event",
-        "//metropolis/pkg/event/memory",
-        "//metropolis/pkg/logbuffer",
-        "//metropolis/pkg/logtree",
-        "//metropolis/pkg/logtree/unraw",
-        "//metropolis/pkg/pki",
-        "//metropolis/pkg/supervisor",
+        "//osbase/event",
+        "//osbase/event/memory",
+        "//osbase/logbuffer",
+        "//osbase/logtree",
+        "//osbase/logtree/unraw",
+        "//osbase/pki",
+        "//osbase/supervisor",
         "@io_etcd_go_etcd_client_v3//:client",
         "@io_etcd_go_etcd_server_v3//embed",
     ],
@@ -45,10 +45,10 @@
     deps = [
         "//metropolis/node/core/localstorage",
         "//metropolis/node/core/localstorage/declarative",
-        "//metropolis/pkg/logbuffer",
-        "//metropolis/pkg/logtree",
-        "//metropolis/pkg/supervisor",
         "//metropolis/test/util",
+        "//osbase/logbuffer",
+        "//osbase/logtree",
+        "//osbase/supervisor",
         "@com_github_google_go_cmp//cmp",
     ],
 )
diff --git a/metropolis/node/core/consensus/configuration.go b/metropolis/node/core/consensus/configuration.go
index dc3cd06..bb3db82 100644
--- a/metropolis/node/core/consensus/configuration.go
+++ b/metropolis/node/core/consensus/configuration.go
@@ -15,7 +15,7 @@
 	"source.monogon.dev/metropolis/node"
 	"source.monogon.dev/metropolis/node/core/identity"
 	"source.monogon.dev/metropolis/node/core/localstorage"
-	"source.monogon.dev/metropolis/pkg/pki"
+	"source.monogon.dev/osbase/pki"
 )
 
 // Config describes the startup configuration of a consensus instance.
diff --git a/metropolis/node/core/consensus/consensus.go b/metropolis/node/core/consensus/consensus.go
index 3244972..e749f7b 100644
--- a/metropolis/node/core/consensus/consensus.go
+++ b/metropolis/node/core/consensus/consensus.go
@@ -102,11 +102,11 @@
 
 	"source.monogon.dev/metropolis/node/core/consensus/client"
 	"source.monogon.dev/metropolis/node/core/identity"
-	"source.monogon.dev/metropolis/pkg/event"
-	"source.monogon.dev/metropolis/pkg/event/memory"
-	"source.monogon.dev/metropolis/pkg/logtree/unraw"
-	"source.monogon.dev/metropolis/pkg/pki"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/event"
+	"source.monogon.dev/osbase/event/memory"
+	"source.monogon.dev/osbase/logtree/unraw"
+	"source.monogon.dev/osbase/pki"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 var (
diff --git a/metropolis/node/core/consensus/consensus_test.go b/metropolis/node/core/consensus/consensus_test.go
index 1866ff5..85df62e 100644
--- a/metropolis/node/core/consensus/consensus_test.go
+++ b/metropolis/node/core/consensus/consensus_test.go
@@ -29,8 +29,8 @@
 
 	"source.monogon.dev/metropolis/node/core/localstorage"
 	"source.monogon.dev/metropolis/node/core/localstorage/declarative"
-	"source.monogon.dev/metropolis/pkg/supervisor"
 	"source.monogon.dev/metropolis/test/util"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 type boilerplate struct {
diff --git a/metropolis/node/core/consensus/logparser.go b/metropolis/node/core/consensus/logparser.go
index dbd3b1d..b403423 100644
--- a/metropolis/node/core/consensus/logparser.go
+++ b/metropolis/node/core/consensus/logparser.go
@@ -8,9 +8,9 @@
 	"strings"
 	"time"
 
-	"source.monogon.dev/metropolis/pkg/logbuffer"
-	"source.monogon.dev/metropolis/pkg/logtree"
-	"source.monogon.dev/metropolis/pkg/logtree/unraw"
+	"source.monogon.dev/osbase/logbuffer"
+	"source.monogon.dev/osbase/logtree"
+	"source.monogon.dev/osbase/logtree/unraw"
 )
 
 // etcdLogEntry is a JSON-encoded, structured log entry received from a running
diff --git a/metropolis/node/core/consensus/logparser_test.go b/metropolis/node/core/consensus/logparser_test.go
index c53c13d..cfe6fea 100644
--- a/metropolis/node/core/consensus/logparser_test.go
+++ b/metropolis/node/core/consensus/logparser_test.go
@@ -6,8 +6,8 @@
 
 	"github.com/google/go-cmp/cmp"
 
-	"source.monogon.dev/metropolis/pkg/logbuffer"
-	"source.monogon.dev/metropolis/pkg/logtree"
+	"source.monogon.dev/osbase/logbuffer"
+	"source.monogon.dev/osbase/logtree"
 )
 
 // TestParsing exercises the parseEtcdLogEntry function.
diff --git a/metropolis/node/core/consensus/status.go b/metropolis/node/core/consensus/status.go
index 44562bf..994e9f7 100644
--- a/metropolis/node/core/consensus/status.go
+++ b/metropolis/node/core/consensus/status.go
@@ -13,8 +13,8 @@
 	"source.monogon.dev/metropolis/node"
 	"source.monogon.dev/metropolis/node/core/consensus/client"
 	"source.monogon.dev/metropolis/node/core/identity"
-	"source.monogon.dev/metropolis/pkg/event"
-	"source.monogon.dev/metropolis/pkg/pki"
+	"source.monogon.dev/osbase/event"
+	"source.monogon.dev/osbase/pki"
 )
 
 // ServiceHandle is implemented by Service and should be the type expected by
diff --git a/metropolis/node/core/consensus/testhelpers.go b/metropolis/node/core/consensus/testhelpers.go
index 3522e06..3471e3c 100644
--- a/metropolis/node/core/consensus/testhelpers.go
+++ b/metropolis/node/core/consensus/testhelpers.go
@@ -6,7 +6,7 @@
 
 	clientv3 "go.etcd.io/etcd/client/v3"
 
-	"source.monogon.dev/metropolis/pkg/event/memory"
+	"source.monogon.dev/osbase/event/memory"
 )
 
 type testServiceHandle struct {
diff --git a/metropolis/node/core/curator/BUILD.bazel b/metropolis/node/core/curator/BUILD.bazel
index e8c3746..f619d4b 100644
--- a/metropolis/node/core/curator/BUILD.bazel
+++ b/metropolis/node/core/curator/BUILD.bazel
@@ -31,13 +31,13 @@
         "//metropolis/node/core/identity",
         "//metropolis/node/core/rpc",
         "//metropolis/node/kubernetes/pki",
-        "//metropolis/pkg/event",
-        "//metropolis/pkg/event/etcd",
-        "//metropolis/pkg/event/memory",
-        "//metropolis/pkg/pki",
-        "//metropolis/pkg/supervisor",
         "//metropolis/proto/api",
         "//metropolis/proto/common",
+        "//osbase/event",
+        "//osbase/event/etcd",
+        "//osbase/event/memory",
+        "//osbase/pki",
+        "//osbase/supervisor",
         "@com_github_google_cel_go//cel:go_default_library",
         "@com_github_google_cel_go//checker/decls:go_default_library",
         "@com_github_google_cel_go//common/types:go_default_library",
@@ -73,13 +73,13 @@
         "//metropolis/node/core/curator/proto/private",
         "//metropolis/node/core/identity",
         "//metropolis/node/core/rpc",
-        "//metropolis/pkg/event",
-        "//metropolis/pkg/logtree",
-        "//metropolis/pkg/pki",
-        "//metropolis/pkg/supervisor",
         "//metropolis/proto/api",
         "//metropolis/proto/common",
         "//metropolis/test/util",
+        "//osbase/event",
+        "//osbase/logtree",
+        "//osbase/pki",
+        "//osbase/supervisor",
         "@com_github_google_go_cmp//cmp",
         "@io_etcd_go_etcd_client_v3//:client",
         "@io_etcd_go_etcd_tests_v3//integration",
diff --git a/metropolis/node/core/curator/bootstrap.go b/metropolis/node/core/curator/bootstrap.go
index ac2a4de..e092c63 100644
--- a/metropolis/node/core/curator/bootstrap.go
+++ b/metropolis/node/core/curator/bootstrap.go
@@ -9,7 +9,7 @@
 
 	"source.monogon.dev/metropolis/node/core/consensus/client"
 	"source.monogon.dev/metropolis/node/core/identity"
-	"source.monogon.dev/metropolis/pkg/pki"
+	"source.monogon.dev/osbase/pki"
 
 	ppb "source.monogon.dev/metropolis/node/core/curator/proto/private"
 )
diff --git a/metropolis/node/core/curator/curator.go b/metropolis/node/core/curator/curator.go
index 149cb18..665fea1 100644
--- a/metropolis/node/core/curator/curator.go
+++ b/metropolis/node/core/curator/curator.go
@@ -27,8 +27,8 @@
 	"source.monogon.dev/metropolis/node/core/consensus/client"
 	ppb "source.monogon.dev/metropolis/node/core/curator/proto/private"
 	"source.monogon.dev/metropolis/node/core/identity"
-	"source.monogon.dev/metropolis/pkg/event/memory"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/event/memory"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 // Config is the configuration of the curator.
diff --git a/metropolis/node/core/curator/curator_test.go b/metropolis/node/core/curator/curator_test.go
index 6cd3f84..841a813 100644
--- a/metropolis/node/core/curator/curator_test.go
+++ b/metropolis/node/core/curator/curator_test.go
@@ -14,10 +14,10 @@
 
 	"source.monogon.dev/metropolis/node/core/consensus"
 	"source.monogon.dev/metropolis/node/core/identity"
-	"source.monogon.dev/metropolis/pkg/event"
-	"source.monogon.dev/metropolis/pkg/logtree"
-	"source.monogon.dev/metropolis/pkg/supervisor"
 	"source.monogon.dev/metropolis/test/util"
+	"source.monogon.dev/osbase/event"
+	"source.monogon.dev/osbase/logtree"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 var (
diff --git a/metropolis/node/core/curator/impl_follower.go b/metropolis/node/core/curator/impl_follower.go
index 5963737..2a7f45e 100644
--- a/metropolis/node/core/curator/impl_follower.go
+++ b/metropolis/node/core/curator/impl_follower.go
@@ -11,7 +11,7 @@
 	cpb "source.monogon.dev/metropolis/node/core/curator/proto/api"
 	"source.monogon.dev/metropolis/node/core/identity"
 	"source.monogon.dev/metropolis/node/core/rpc"
-	"source.monogon.dev/metropolis/pkg/event/memory"
+	"source.monogon.dev/osbase/event/memory"
 )
 
 type curatorFollower struct {
diff --git a/metropolis/node/core/curator/impl_leader_aaa.go b/metropolis/node/core/curator/impl_leader_aaa.go
index c9eb08f..8f4eb84 100644
--- a/metropolis/node/core/curator/impl_leader_aaa.go
+++ b/metropolis/node/core/curator/impl_leader_aaa.go
@@ -13,8 +13,8 @@
 	ppb "source.monogon.dev/metropolis/node/core/curator/proto/private"
 	"source.monogon.dev/metropolis/node/core/identity"
 	"source.monogon.dev/metropolis/node/core/rpc"
-	"source.monogon.dev/metropolis/pkg/pki"
 	apb "source.monogon.dev/metropolis/proto/api"
+	"source.monogon.dev/osbase/pki"
 )
 
 const (
diff --git a/metropolis/node/core/curator/impl_leader_cluster_networking.go b/metropolis/node/core/curator/impl_leader_cluster_networking.go
index 52d8c12..5dab657 100644
--- a/metropolis/node/core/curator/impl_leader_cluster_networking.go
+++ b/metropolis/node/core/curator/impl_leader_cluster_networking.go
@@ -12,8 +12,8 @@
 	ipb "source.monogon.dev/metropolis/node/core/curator/proto/api"
 	"source.monogon.dev/metropolis/node/core/identity"
 	"source.monogon.dev/metropolis/node/core/rpc"
-	"source.monogon.dev/metropolis/pkg/event"
-	"source.monogon.dev/metropolis/pkg/event/etcd"
+	"source.monogon.dev/osbase/event"
+	"source.monogon.dev/osbase/event/etcd"
 )
 
 // preapreClusternetCacheUnlocked makes sure the leader's clusternetCache exists,
diff --git a/metropolis/node/core/curator/impl_leader_curator.go b/metropolis/node/core/curator/impl_leader_curator.go
index d81f4eb..126ba49 100644
--- a/metropolis/node/core/curator/impl_leader_curator.go
+++ b/metropolis/node/core/curator/impl_leader_curator.go
@@ -19,10 +19,10 @@
 	ipb "source.monogon.dev/metropolis/node/core/curator/proto/api"
 	"source.monogon.dev/metropolis/node/core/identity"
 	"source.monogon.dev/metropolis/node/core/rpc"
-	"source.monogon.dev/metropolis/pkg/event"
-	"source.monogon.dev/metropolis/pkg/event/etcd"
-	"source.monogon.dev/metropolis/pkg/pki"
 	cpb "source.monogon.dev/metropolis/proto/common"
+	"source.monogon.dev/osbase/event"
+	"source.monogon.dev/osbase/event/etcd"
+	"source.monogon.dev/osbase/pki"
 )
 
 // leaderCurator implements the Curator gRPC API (ipb.Curator) as a curator
diff --git a/metropolis/node/core/curator/impl_leader_test.go b/metropolis/node/core/curator/impl_leader_test.go
index 5c3c337..a5d1ea1 100644
--- a/metropolis/node/core/curator/impl_leader_test.go
+++ b/metropolis/node/core/curator/impl_leader_test.go
@@ -31,10 +31,10 @@
 	ppb "source.monogon.dev/metropolis/node/core/curator/proto/private"
 	"source.monogon.dev/metropolis/node/core/identity"
 	"source.monogon.dev/metropolis/node/core/rpc"
-	"source.monogon.dev/metropolis/pkg/logtree"
-	"source.monogon.dev/metropolis/pkg/pki"
 	apb "source.monogon.dev/metropolis/proto/api"
 	cpb "source.monogon.dev/metropolis/proto/common"
+	"source.monogon.dev/osbase/logtree"
+	"source.monogon.dev/osbase/pki"
 )
 
 // fakeLeader creates a curatorLeader without any underlying leader election, in
diff --git a/metropolis/node/core/curator/listener.go b/metropolis/node/core/curator/listener.go
index 77fe0e0..ede28bb 100644
--- a/metropolis/node/core/curator/listener.go
+++ b/metropolis/node/core/curator/listener.go
@@ -16,9 +16,9 @@
 	cpb "source.monogon.dev/metropolis/node/core/curator/proto/api"
 	"source.monogon.dev/metropolis/node/core/identity"
 	"source.monogon.dev/metropolis/node/core/rpc"
-	"source.monogon.dev/metropolis/pkg/event/memory"
-	"source.monogon.dev/metropolis/pkg/supervisor"
 	apb "source.monogon.dev/metropolis/proto/api"
+	"source.monogon.dev/osbase/event/memory"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 // listener is the curator runnable responsible for listening for gRPC
diff --git a/metropolis/node/core/curator/state_node.go b/metropolis/node/core/curator/state_node.go
index 5e5ef2e..0cfc87e 100644
--- a/metropolis/node/core/curator/state_node.go
+++ b/metropolis/node/core/curator/state_node.go
@@ -33,7 +33,7 @@
 	"source.monogon.dev/metropolis/node/core/consensus"
 	"source.monogon.dev/metropolis/node/core/identity"
 	"source.monogon.dev/metropolis/node/core/rpc"
-	"source.monogon.dev/metropolis/pkg/pki"
+	"source.monogon.dev/osbase/pki"
 
 	ppb "source.monogon.dev/metropolis/node/core/curator/proto/private"
 	cpb "source.monogon.dev/metropolis/proto/common"
diff --git a/metropolis/node/core/curator/state_pki.go b/metropolis/node/core/curator/state_pki.go
index 2384158..7eb3f76 100644
--- a/metropolis/node/core/curator/state_pki.go
+++ b/metropolis/node/core/curator/state_pki.go
@@ -2,7 +2,7 @@
 
 import (
 	"source.monogon.dev/metropolis/node/core/identity"
-	"source.monogon.dev/metropolis/pkg/pki"
+	"source.monogon.dev/osbase/pki"
 )
 
 var (
diff --git a/metropolis/node/core/debug_service_disabled.go b/metropolis/node/core/debug_service_disabled.go
index da64266..815a0dd 100644
--- a/metropolis/node/core/debug_service_disabled.go
+++ b/metropolis/node/core/debug_service_disabled.go
@@ -5,7 +5,7 @@
 
 	"source.monogon.dev/metropolis/node/core/localstorage"
 	"source.monogon.dev/metropolis/node/core/roleserve"
-	"source.monogon.dev/metropolis/pkg/logtree"
+	"source.monogon.dev/osbase/logtree"
 )
 
 // runDebugService runs the debug service if this is a debug build. Otherwise
diff --git a/metropolis/node/core/debug_service_enabled.go b/metropolis/node/core/debug_service_enabled.go
index 75e92bc..4759dab 100644
--- a/metropolis/node/core/debug_service_enabled.go
+++ b/metropolis/node/core/debug_service_enabled.go
@@ -34,8 +34,8 @@
 	"source.monogon.dev/metropolis/node/core/localstorage"
 	"source.monogon.dev/metropolis/node/core/mgmt"
 	"source.monogon.dev/metropolis/node/core/roleserve"
-	"source.monogon.dev/metropolis/pkg/logtree"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/logtree"
+	"source.monogon.dev/osbase/supervisor"
 
 	common "source.monogon.dev/metropolis/node"
 	apb "source.monogon.dev/metropolis/proto/api"
diff --git a/metropolis/node/core/devmgr/BUILD.bazel b/metropolis/node/core/devmgr/BUILD.bazel
index 15b8065..bc4a293 100644
--- a/metropolis/node/core/devmgr/BUILD.bazel
+++ b/metropolis/node/core/devmgr/BUILD.bazel
@@ -6,8 +6,8 @@
     importpath = "source.monogon.dev/metropolis/node/core/devmgr",
     visibility = ["//visibility:public"],
     deps = [
-        "//metropolis/pkg/kmod",
-        "//metropolis/pkg/supervisor",
+        "//osbase/kmod",
+        "//osbase/supervisor",
         "@com_github_mdlayher_kobject//:kobject",
     ],
 )
diff --git a/metropolis/node/core/devmgr/devmgr.go b/metropolis/node/core/devmgr/devmgr.go
index 8133c77..b5c1835 100644
--- a/metropolis/node/core/devmgr/devmgr.go
+++ b/metropolis/node/core/devmgr/devmgr.go
@@ -15,8 +15,8 @@
 
 	"github.com/mdlayher/kobject"
 
-	"source.monogon.dev/metropolis/pkg/kmod"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/kmod"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 type Service struct{}
diff --git a/metropolis/node/core/localstorage/BUILD.bazel b/metropolis/node/core/localstorage/BUILD.bazel
index 075a07c..4249297 100644
--- a/metropolis/node/core/localstorage/BUILD.bazel
+++ b/metropolis/node/core/localstorage/BUILD.bazel
@@ -15,11 +15,11 @@
         "//metropolis/node/core/localstorage/crypt",
         "//metropolis/node/core/localstorage/declarative",
         "//metropolis/node/core/update",
-        "//metropolis/pkg/tpm",
         "//metropolis/proto/api",
         "//metropolis/proto/common",
         "//metropolis/proto/private",
         "//net/proto",
+        "//osbase/tpm",
         "@org_golang_google_protobuf//proto",
         "@org_golang_x_sys//unix",
     ],
diff --git a/metropolis/node/core/localstorage/crypt/BUILD.bazel b/metropolis/node/core/localstorage/crypt/BUILD.bazel
index d8e9881..39b6a53 100644
--- a/metropolis/node/core/localstorage/crypt/BUILD.bazel
+++ b/metropolis/node/core/localstorage/crypt/BUILD.bazel
@@ -1,5 +1,5 @@
 load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
-load("//metropolis/test/ktest:ktest.bzl", "ktest")
+load("//osbase/test/ktest:ktest.bzl", "ktest")
 
 go_library(
     name = "crypt",
@@ -14,12 +14,12 @@
     visibility = ["//metropolis/node/core/localstorage:__subpackages__"],
     deps = [
         "//metropolis/node/core/update",
-        "//metropolis/pkg/blockdev",
-        "//metropolis/pkg/devicemapper",
-        "//metropolis/pkg/efivarfs",
-        "//metropolis/pkg/gpt",
-        "//metropolis/pkg/supervisor",
-        "//metropolis/pkg/sysfs",
+        "//osbase/blockdev",
+        "//osbase/devicemapper",
+        "//osbase/efivarfs",
+        "//osbase/gpt",
+        "//osbase/supervisor",
+        "//osbase/sysfs",
         "@com_github_google_uuid//:uuid",
         "@org_golang_x_sys//unix",
     ],
diff --git a/metropolis/node/core/localstorage/crypt/blockdev.go b/metropolis/node/core/localstorage/crypt/blockdev.go
index d021d9c..6466afc 100644
--- a/metropolis/node/core/localstorage/crypt/blockdev.go
+++ b/metropolis/node/core/localstorage/crypt/blockdev.go
@@ -28,11 +28,11 @@
 	"golang.org/x/sys/unix"
 
 	"source.monogon.dev/metropolis/node/core/update"
-	"source.monogon.dev/metropolis/pkg/blockdev"
-	"source.monogon.dev/metropolis/pkg/efivarfs"
-	"source.monogon.dev/metropolis/pkg/gpt"
-	"source.monogon.dev/metropolis/pkg/supervisor"
-	"source.monogon.dev/metropolis/pkg/sysfs"
+	"source.monogon.dev/osbase/blockdev"
+	"source.monogon.dev/osbase/efivarfs"
+	"source.monogon.dev/osbase/gpt"
+	"source.monogon.dev/osbase/supervisor"
+	"source.monogon.dev/osbase/sysfs"
 )
 
 // NodeDataPartitionType is the partition type value for a Metropolis Node
diff --git a/metropolis/node/core/localstorage/crypt/crypt.go b/metropolis/node/core/localstorage/crypt/crypt.go
index 0336832..bd20efd 100644
--- a/metropolis/node/core/localstorage/crypt/crypt.go
+++ b/metropolis/node/core/localstorage/crypt/crypt.go
@@ -38,7 +38,7 @@
 import (
 	"fmt"
 
-	"source.monogon.dev/metropolis/pkg/blockdev"
+	"source.monogon.dev/osbase/blockdev"
 )
 
 // Mode of block device encryption and/or authentication, if any. See the
diff --git a/metropolis/node/core/localstorage/crypt/crypt_encryption.go b/metropolis/node/core/localstorage/crypt/crypt_encryption.go
index c5f246c..fb8a129 100644
--- a/metropolis/node/core/localstorage/crypt/crypt_encryption.go
+++ b/metropolis/node/core/localstorage/crypt/crypt_encryption.go
@@ -7,8 +7,8 @@
 
 	"golang.org/x/sys/unix"
 
-	"source.monogon.dev/metropolis/pkg/blockdev"
-	"source.monogon.dev/metropolis/pkg/devicemapper"
+	"source.monogon.dev/osbase/blockdev"
+	"source.monogon.dev/osbase/devicemapper"
 )
 
 func encryptionDevPath(name string) string {
diff --git a/metropolis/node/core/localstorage/crypt/crypt_integrity.go b/metropolis/node/core/localstorage/crypt/crypt_integrity.go
index 7276a3e..b2e43f8 100644
--- a/metropolis/node/core/localstorage/crypt/crypt_integrity.go
+++ b/metropolis/node/core/localstorage/crypt/crypt_integrity.go
@@ -7,8 +7,8 @@
 
 	"golang.org/x/sys/unix"
 
-	"source.monogon.dev/metropolis/pkg/blockdev"
-	"source.monogon.dev/metropolis/pkg/devicemapper"
+	"source.monogon.dev/osbase/blockdev"
+	"source.monogon.dev/osbase/devicemapper"
 )
 
 func integrityDevPath(name string) string {
diff --git a/metropolis/node/core/localstorage/directory_data.go b/metropolis/node/core/localstorage/directory_data.go
index 5607e0a..7637056 100644
--- a/metropolis/node/core/localstorage/directory_data.go
+++ b/metropolis/node/core/localstorage/directory_data.go
@@ -25,9 +25,9 @@
 
 	"source.monogon.dev/metropolis/node/core/localstorage/crypt"
 	"source.monogon.dev/metropolis/node/core/localstorage/declarative"
-	"source.monogon.dev/metropolis/pkg/tpm"
 	cpb "source.monogon.dev/metropolis/proto/common"
 	ppb "source.monogon.dev/metropolis/proto/private"
+	"source.monogon.dev/osbase/tpm"
 )
 
 var keySize uint16 = 256 / 8
diff --git a/metropolis/node/core/localstorage/storage_esp.go b/metropolis/node/core/localstorage/storage_esp.go
index 945e6ca..8fc71d0 100644
--- a/metropolis/node/core/localstorage/storage_esp.go
+++ b/metropolis/node/core/localstorage/storage_esp.go
@@ -24,11 +24,11 @@
 	"google.golang.org/protobuf/proto"
 
 	"source.monogon.dev/metropolis/node/core/localstorage/declarative"
-	"source.monogon.dev/metropolis/pkg/tpm"
 	apb "source.monogon.dev/metropolis/proto/api"
 	cpb "source.monogon.dev/metropolis/proto/common"
 	ppb "source.monogon.dev/metropolis/proto/private"
 	npb "source.monogon.dev/net/proto"
+	"source.monogon.dev/osbase/tpm"
 )
 
 // ESPDirectory is the EFI System Partition. It is a cleartext partition
diff --git a/metropolis/node/core/main.go b/metropolis/node/core/main.go
index 9a7e39e..e9d1ad1 100644
--- a/metropolis/node/core/main.go
+++ b/metropolis/node/core/main.go
@@ -36,10 +36,10 @@
 	"source.monogon.dev/metropolis/node/core/rpc/resolver"
 	timesvc "source.monogon.dev/metropolis/node/core/time"
 	"source.monogon.dev/metropolis/node/core/update"
-	"source.monogon.dev/metropolis/pkg/logtree"
-	"source.monogon.dev/metropolis/pkg/supervisor"
-	"source.monogon.dev/metropolis/pkg/tpm"
 	mversion "source.monogon.dev/metropolis/version"
+	"source.monogon.dev/osbase/logtree"
+	"source.monogon.dev/osbase/supervisor"
+	"source.monogon.dev/osbase/tpm"
 	"source.monogon.dev/version"
 )
 
diff --git a/metropolis/node/core/metrics/BUILD.bazel b/metropolis/node/core/metrics/BUILD.bazel
index 9169ae6..6385bb8 100644
--- a/metropolis/node/core/metrics/BUILD.bazel
+++ b/metropolis/node/core/metrics/BUILD.bazel
@@ -15,7 +15,7 @@
         "//metropolis/node/core/curator/proto/api",
         "//metropolis/node/core/curator/watcher",
         "//metropolis/node/core/identity",
-        "//metropolis/pkg/supervisor",
+        "//osbase/supervisor",
     ],
 )
 
@@ -30,9 +30,9 @@
     deps = [
         "//metropolis/node",
         "//metropolis/node/core/curator/proto/api",
-        "//metropolis/pkg/freeport",
-        "//metropolis/pkg/supervisor",
         "//metropolis/test/util",
+        "//osbase/freeport",
+        "//osbase/supervisor",
         "@com_zx2c4_golang_wireguard_wgctrl//wgtypes",
         "@io_bazel_rules_go//go/runfiles:go_default_library",
     ],
diff --git a/metropolis/node/core/metrics/discovery.go b/metropolis/node/core/metrics/discovery.go
index ff3fcf1..116291e 100644
--- a/metropolis/node/core/metrics/discovery.go
+++ b/metropolis/node/core/metrics/discovery.go
@@ -9,7 +9,7 @@
 
 	"source.monogon.dev/go/types/mapsets"
 	"source.monogon.dev/metropolis/node/core/curator/watcher"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/supervisor"
 
 	ipb "source.monogon.dev/metropolis/node/core/curator/proto/api"
 )
diff --git a/metropolis/node/core/metrics/exporters.go b/metropolis/node/core/metrics/exporters.go
index c14abcc..2dd2cfc 100644
--- a/metropolis/node/core/metrics/exporters.go
+++ b/metropolis/node/core/metrics/exporters.go
@@ -6,7 +6,7 @@
 	"net/http"
 
 	"source.monogon.dev/metropolis/node"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 // An Exporter is a Prometheus binary running under the Metrics service which
diff --git a/metropolis/node/core/metrics/metrics.go b/metropolis/node/core/metrics/metrics.go
index bd229fa..b07a980 100644
--- a/metropolis/node/core/metrics/metrics.go
+++ b/metropolis/node/core/metrics/metrics.go
@@ -11,7 +11,7 @@
 
 	"source.monogon.dev/metropolis/node"
 	"source.monogon.dev/metropolis/node/core/identity"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 // Service is the Metropolis Metrics Service.
diff --git a/metropolis/node/core/metrics/metrics_test.go b/metropolis/node/core/metrics/metrics_test.go
index b0a9310..06b1d4e 100644
--- a/metropolis/node/core/metrics/metrics_test.go
+++ b/metropolis/node/core/metrics/metrics_test.go
@@ -18,9 +18,9 @@
 	apb "source.monogon.dev/metropolis/node/core/curator/proto/api"
 
 	"source.monogon.dev/metropolis/node"
-	"source.monogon.dev/metropolis/pkg/freeport"
-	"source.monogon.dev/metropolis/pkg/supervisor"
 	"source.monogon.dev/metropolis/test/util"
+	"source.monogon.dev/osbase/freeport"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 func fakeExporter(name, value string) *Exporter {
diff --git a/metropolis/node/core/mgmt/BUILD.bazel b/metropolis/node/core/mgmt/BUILD.bazel
index ecec6d1..65a54a6 100644
--- a/metropolis/node/core/mgmt/BUILD.bazel
+++ b/metropolis/node/core/mgmt/BUILD.bazel
@@ -14,11 +14,11 @@
         "//metropolis/node/core/identity",
         "//metropolis/node/core/rpc",
         "//metropolis/node/core/update",
-        "//metropolis/pkg/logtree",
-        "//metropolis/pkg/logtree/proto",
-        "//metropolis/pkg/supervisor",
         "//metropolis/proto/api",
         "//metropolis/proto/common",
+        "//osbase/logtree",
+        "//osbase/logtree/proto",
+        "//osbase/supervisor",
         "@com_github_vishvananda_netlink//:netlink",
         "@org_golang_google_grpc//:go_default_library",
         "@org_golang_google_grpc//codes",
@@ -32,10 +32,10 @@
     srcs = ["svc_logs_test.go"],
     embed = [":mgmt"],
     deps = [
-        "//metropolis/pkg/logtree",
-        "//metropolis/pkg/logtree/proto",
         "//metropolis/proto/api",
         "//metropolis/proto/common",
+        "//osbase/logtree",
+        "//osbase/logtree/proto",
         "@com_github_google_go_cmp//cmp",
         "@org_golang_google_grpc//:go_default_library",
         "@org_golang_google_grpc//credentials/insecure",
diff --git a/metropolis/node/core/mgmt/mgmt.go b/metropolis/node/core/mgmt/mgmt.go
index e9c3f91..b0632bb 100644
--- a/metropolis/node/core/mgmt/mgmt.go
+++ b/metropolis/node/core/mgmt/mgmt.go
@@ -14,8 +14,8 @@
 	"source.monogon.dev/metropolis/node/core/identity"
 	"source.monogon.dev/metropolis/node/core/rpc"
 	"source.monogon.dev/metropolis/node/core/update"
-	"source.monogon.dev/metropolis/pkg/logtree"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/logtree"
+	"source.monogon.dev/osbase/supervisor"
 
 	apb "source.monogon.dev/metropolis/proto/api"
 )
diff --git a/metropolis/node/core/mgmt/svc_logs.go b/metropolis/node/core/mgmt/svc_logs.go
index 1a884b3..ef5c1d7 100644
--- a/metropolis/node/core/mgmt/svc_logs.go
+++ b/metropolis/node/core/mgmt/svc_logs.go
@@ -7,10 +7,10 @@
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
 
-	"source.monogon.dev/metropolis/pkg/logtree"
-	lpb "source.monogon.dev/metropolis/pkg/logtree/proto"
 	"source.monogon.dev/metropolis/proto/api"
 	cpb "source.monogon.dev/metropolis/proto/common"
+	"source.monogon.dev/osbase/logtree"
+	lpb "source.monogon.dev/osbase/logtree/proto"
 )
 
 const (
diff --git a/metropolis/node/core/mgmt/svc_logs_test.go b/metropolis/node/core/mgmt/svc_logs_test.go
index 162de57..dec1459 100644
--- a/metropolis/node/core/mgmt/svc_logs_test.go
+++ b/metropolis/node/core/mgmt/svc_logs_test.go
@@ -16,10 +16,10 @@
 	"google.golang.org/grpc/test/bufconn"
 	"google.golang.org/protobuf/testing/protocmp"
 
-	"source.monogon.dev/metropolis/pkg/logtree"
-	lpb "source.monogon.dev/metropolis/pkg/logtree/proto"
 	"source.monogon.dev/metropolis/proto/api"
 	cpb "source.monogon.dev/metropolis/proto/common"
+	"source.monogon.dev/osbase/logtree"
+	lpb "source.monogon.dev/osbase/logtree/proto"
 )
 
 func dut(t *testing.T) (*Service, *grpc.ClientConn) {
diff --git a/metropolis/node/core/network/BUILD.bazel b/metropolis/node/core/network/BUILD.bazel
index 52e4614..07120e4 100644
--- a/metropolis/node/core/network/BUILD.bazel
+++ b/metropolis/node/core/network/BUILD.bazel
@@ -14,11 +14,11 @@
         "//metropolis/node/core/network/dhcp4c",
         "//metropolis/node/core/network/dhcp4c/callback",
         "//metropolis/node/core/network/dns",
-        "//metropolis/pkg/event/memory",
-        "//metropolis/pkg/logtree",
-        "//metropolis/pkg/supervisor",
-        "//metropolis/pkg/sysctl",
         "//net/proto",
+        "//osbase/event/memory",
+        "//osbase/logtree",
+        "//osbase/supervisor",
+        "//osbase/sysctl",
         "@com_github_google_nftables//:nftables",
         "@com_github_google_nftables//expr",
         "@com_github_insomniacslk_dhcp//dhcpv4",
diff --git a/metropolis/node/core/network/dhcp4c/BUILD.bazel b/metropolis/node/core/network/dhcp4c/BUILD.bazel
index d514f2d..24dbe83 100644
--- a/metropolis/node/core/network/dhcp4c/BUILD.bazel
+++ b/metropolis/node/core/network/dhcp4c/BUILD.bazel
@@ -15,7 +15,7 @@
     ],
     deps = [
         "//metropolis/node/core/network/dhcp4c/transport",
-        "//metropolis/pkg/supervisor",
+        "//osbase/supervisor",
         "@com_github_cenkalti_backoff_v4//:backoff",
         "@com_github_insomniacslk_dhcp//dhcpv4",
         "@com_github_insomniacslk_dhcp//iana",
diff --git a/metropolis/node/core/network/dhcp4c/callback/BUILD.bazel b/metropolis/node/core/network/dhcp4c/callback/BUILD.bazel
index d841c6e..89ad035 100644
--- a/metropolis/node/core/network/dhcp4c/callback/BUILD.bazel
+++ b/metropolis/node/core/network/dhcp4c/callback/BUILD.bazel
@@ -1,5 +1,5 @@
 load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
-load("//metropolis/test/ktest:ktest.bzl", "ktest")
+load("//osbase/test/ktest:ktest.bzl", "ktest")
 
 go_library(
     name = "callback",
diff --git a/metropolis/node/core/network/dhcp4c/dhcpc.go b/metropolis/node/core/network/dhcp4c/dhcpc.go
index 76347e8..d14dee8 100644
--- a/metropolis/node/core/network/dhcp4c/dhcpc.go
+++ b/metropolis/node/core/network/dhcp4c/dhcpc.go
@@ -37,7 +37,7 @@
 	"github.com/insomniacslk/dhcp/iana"
 
 	"source.monogon.dev/metropolis/node/core/network/dhcp4c/transport"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 type state int
diff --git a/metropolis/node/core/network/dns/BUILD.bazel b/metropolis/node/core/network/dns/BUILD.bazel
index 4dccf49..6d51db1 100644
--- a/metropolis/node/core/network/dns/BUILD.bazel
+++ b/metropolis/node/core/network/dns/BUILD.bazel
@@ -9,8 +9,8 @@
     importpath = "source.monogon.dev/metropolis/node/core/network/dns",
     visibility = ["//metropolis/node:__subpackages__"],
     deps = [
-        "//metropolis/pkg/fileargs",
-        "//metropolis/pkg/supervisor",
+        "//osbase/fileargs",
+        "//osbase/supervisor",
         "@org_golang_x_sys//unix",
     ],
 )
diff --git a/metropolis/node/core/network/dns/coredns.go b/metropolis/node/core/network/dns/coredns.go
index af4562b..472ab5c 100644
--- a/metropolis/node/core/network/dns/coredns.go
+++ b/metropolis/node/core/network/dns/coredns.go
@@ -29,8 +29,8 @@
 
 	"golang.org/x/sys/unix"
 
-	"source.monogon.dev/metropolis/pkg/fileargs"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/fileargs"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 const corefileBase = `
diff --git a/metropolis/node/core/network/hostsfile/BUILD.bazel b/metropolis/node/core/network/hostsfile/BUILD.bazel
index 51b7f4f..2490493 100644
--- a/metropolis/node/core/network/hostsfile/BUILD.bazel
+++ b/metropolis/node/core/network/hostsfile/BUILD.bazel
@@ -10,9 +10,9 @@
         "//metropolis/node/core/curator/watcher",
         "//metropolis/node/core/localstorage",
         "//metropolis/node/core/network",
-        "//metropolis/pkg/event",
-        "//metropolis/pkg/supervisor",
         "//metropolis/proto/common",
+        "//osbase/event",
+        "//osbase/supervisor",
         "@org_golang_google_grpc//:go_default_library",
         "@org_golang_google_protobuf//proto",
         "@org_golang_x_sys//unix",
diff --git a/metropolis/node/core/network/hostsfile/hostsfile.go b/metropolis/node/core/network/hostsfile/hostsfile.go
index c09ea29..883d8cf 100644
--- a/metropolis/node/core/network/hostsfile/hostsfile.go
+++ b/metropolis/node/core/network/hostsfile/hostsfile.go
@@ -30,8 +30,8 @@
 	"source.monogon.dev/metropolis/node/core/curator/watcher"
 	"source.monogon.dev/metropolis/node/core/localstorage"
 	"source.monogon.dev/metropolis/node/core/network"
-	"source.monogon.dev/metropolis/pkg/event"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/event"
+	"source.monogon.dev/osbase/supervisor"
 
 	ipb "source.monogon.dev/metropolis/node/core/curator/proto/api"
 	cpb "source.monogon.dev/metropolis/proto/common"
diff --git a/metropolis/node/core/network/main.go b/metropolis/node/core/network/main.go
index cc57aa5..487a0eb 100644
--- a/metropolis/node/core/network/main.go
+++ b/metropolis/node/core/network/main.go
@@ -30,9 +30,9 @@
 	"source.monogon.dev/metropolis/node/core/network/dhcp4c"
 	dhcpcb "source.monogon.dev/metropolis/node/core/network/dhcp4c/callback"
 	"source.monogon.dev/metropolis/node/core/network/dns"
-	"source.monogon.dev/metropolis/pkg/event/memory"
-	"source.monogon.dev/metropolis/pkg/supervisor"
-	"source.monogon.dev/metropolis/pkg/sysctl"
+	"source.monogon.dev/osbase/event/memory"
+	"source.monogon.dev/osbase/supervisor"
+	"source.monogon.dev/osbase/sysctl"
 
 	netpb "source.monogon.dev/net/proto"
 )
diff --git a/metropolis/node/core/network/quirks.go b/metropolis/node/core/network/quirks.go
index 6dd5808..6a3f5cc 100644
--- a/metropolis/node/core/network/quirks.go
+++ b/metropolis/node/core/network/quirks.go
@@ -9,7 +9,7 @@
 	"github.com/vishvananda/netlink"
 	"golang.org/x/sys/unix"
 
-	"source.monogon.dev/metropolis/pkg/logtree"
+	"source.monogon.dev/osbase/logtree"
 )
 
 // applyQuirks applies settings to drivers and/or hardware to make it work
diff --git a/metropolis/node/core/network/static.go b/metropolis/node/core/network/static.go
index 0bbbab6..d69815c 100644
--- a/metropolis/node/core/network/static.go
+++ b/metropolis/node/core/network/static.go
@@ -19,9 +19,9 @@
 	"source.monogon.dev/metropolis/node/core/network/dhcp4c"
 	dhcpcb "source.monogon.dev/metropolis/node/core/network/dhcp4c/callback"
 	"source.monogon.dev/metropolis/node/core/network/dns"
-	"source.monogon.dev/metropolis/pkg/logtree"
-	"source.monogon.dev/metropolis/pkg/supervisor"
-	"source.monogon.dev/metropolis/pkg/sysctl"
+	"source.monogon.dev/osbase/logtree"
+	"source.monogon.dev/osbase/supervisor"
+	"source.monogon.dev/osbase/sysctl"
 
 	netpb "source.monogon.dev/net/proto"
 )
diff --git a/metropolis/node/core/nodeparams.go b/metropolis/node/core/nodeparams.go
index cb365d5..bc3c5f0 100644
--- a/metropolis/node/core/nodeparams.go
+++ b/metropolis/node/core/nodeparams.go
@@ -16,7 +16,7 @@
 	apb "source.monogon.dev/metropolis/proto/api"
 
 	"source.monogon.dev/metropolis/node/core/localstorage"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 func nodeParamsFWCFG(ctx context.Context) (*apb.NodeParameters, error) {
diff --git a/metropolis/node/core/panichandler.go b/metropolis/node/core/panichandler.go
index b336103..8a6ef6c 100644
--- a/metropolis/node/core/panichandler.go
+++ b/metropolis/node/core/panichandler.go
@@ -14,7 +14,7 @@
 
 	"golang.org/x/sys/unix"
 
-	"source.monogon.dev/metropolis/pkg/logtree"
+	"source.monogon.dev/osbase/logtree"
 )
 
 // This hooks into a global variable which is checked by runtime.write and used
diff --git a/metropolis/node/core/pstore.go b/metropolis/node/core/pstore.go
index c8863e5..dfa30f0 100644
--- a/metropolis/node/core/pstore.go
+++ b/metropolis/node/core/pstore.go
@@ -3,8 +3,8 @@
 import (
 	"context"
 
-	"source.monogon.dev/metropolis/pkg/pstore"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/pstore"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 // dumpAndCleanPstore dumps all files accumulated in the pstore into the log
diff --git a/metropolis/node/core/roleserve/BUILD.bazel b/metropolis/node/core/roleserve/BUILD.bazel
index afad843..5d72c70 100644
--- a/metropolis/node/core/roleserve/BUILD.bazel
+++ b/metropolis/node/core/roleserve/BUILD.bazel
@@ -36,13 +36,13 @@
         "//metropolis/node/kubernetes",
         "//metropolis/node/kubernetes/containerd",
         "//metropolis/node/kubernetes/pki",
-        "//metropolis/pkg/event",
-        "//metropolis/pkg/event/memory",
-        "//metropolis/pkg/logtree",
-        "//metropolis/pkg/pki",
-        "//metropolis/pkg/supervisor",
         "//metropolis/proto/common",
         "//metropolis/version",
+        "//osbase/event",
+        "//osbase/event/memory",
+        "//osbase/logtree",
+        "//osbase/pki",
+        "//osbase/supervisor",
         "@org_golang_google_grpc//:go_default_library",
         "@org_golang_google_protobuf//encoding/prototext",
         "@org_golang_google_protobuf//proto",
@@ -60,10 +60,10 @@
         "//metropolis/node/core/consensus",
         "//metropolis/node/core/curator",
         "//metropolis/node/core/curator/proto/api",
-        "//metropolis/pkg/supervisor",
         "//metropolis/proto/common",
         "//metropolis/test/util",
         "//metropolis/version",
+        "//osbase/supervisor",
         "@com_github_cenkalti_backoff_v4//:backoff",
         "@com_github_google_go_cmp//cmp",
         "@org_golang_google_grpc//:go_default_library",
diff --git a/metropolis/node/core/roleserve/roleserve.go b/metropolis/node/core/roleserve/roleserve.go
index ad8207b..f03a83b 100644
--- a/metropolis/node/core/roleserve/roleserve.go
+++ b/metropolis/node/core/roleserve/roleserve.go
@@ -47,10 +47,10 @@
 	"source.monogon.dev/metropolis/node/core/network"
 	"source.monogon.dev/metropolis/node/core/rpc/resolver"
 	"source.monogon.dev/metropolis/node/core/update"
-	"source.monogon.dev/metropolis/pkg/event/memory"
-	"source.monogon.dev/metropolis/pkg/logtree"
-	"source.monogon.dev/metropolis/pkg/supervisor"
 	cpb "source.monogon.dev/metropolis/proto/common"
+	"source.monogon.dev/osbase/event/memory"
+	"source.monogon.dev/osbase/logtree"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 // Config is the configuration of the role server.
diff --git a/metropolis/node/core/roleserve/worker_clusternet.go b/metropolis/node/core/roleserve/worker_clusternet.go
index 1eb5649..a2db859 100644
--- a/metropolis/node/core/roleserve/worker_clusternet.go
+++ b/metropolis/node/core/roleserve/worker_clusternet.go
@@ -7,8 +7,8 @@
 	"source.monogon.dev/metropolis/node/core/clusternet"
 	"source.monogon.dev/metropolis/node/core/localstorage"
 	"source.monogon.dev/metropolis/node/core/network"
-	"source.monogon.dev/metropolis/pkg/event/memory"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/event/memory"
+	"source.monogon.dev/osbase/supervisor"
 
 	ipb "source.monogon.dev/metropolis/node/core/curator/proto/api"
 )
diff --git a/metropolis/node/core/roleserve/worker_controlplane.go b/metropolis/node/core/roleserve/worker_controlplane.go
index 777f887..dbae49f 100644
--- a/metropolis/node/core/roleserve/worker_controlplane.go
+++ b/metropolis/node/core/roleserve/worker_controlplane.go
@@ -12,11 +12,11 @@
 	"source.monogon.dev/metropolis/node/core/identity"
 	"source.monogon.dev/metropolis/node/core/localstorage"
 	"source.monogon.dev/metropolis/node/core/rpc/resolver"
-	"source.monogon.dev/metropolis/pkg/event"
-	"source.monogon.dev/metropolis/pkg/event/memory"
-	"source.monogon.dev/metropolis/pkg/pki"
-	"source.monogon.dev/metropolis/pkg/supervisor"
 	cpb "source.monogon.dev/metropolis/proto/common"
+	"source.monogon.dev/osbase/event"
+	"source.monogon.dev/osbase/event/memory"
+	"source.monogon.dev/osbase/pki"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 // workerControlPlane is the Control Plane Worker, responsible for maintaining a
diff --git a/metropolis/node/core/roleserve/worker_heartbeat.go b/metropolis/node/core/roleserve/worker_heartbeat.go
index 6ba07c5..7a77cb9 100644
--- a/metropolis/node/core/roleserve/worker_heartbeat.go
+++ b/metropolis/node/core/roleserve/worker_heartbeat.go
@@ -9,8 +9,8 @@
 	"source.monogon.dev/metropolis/node/core/curator"
 	ipb "source.monogon.dev/metropolis/node/core/curator/proto/api"
 	"source.monogon.dev/metropolis/node/core/network"
-	"source.monogon.dev/metropolis/pkg/event/memory"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/event/memory"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 // workerHeartbeat is a service that periodically updates node's heartbeat
diff --git a/metropolis/node/core/roleserve/worker_hostsfile.go b/metropolis/node/core/roleserve/worker_hostsfile.go
index 8574235..6e1a1ca 100644
--- a/metropolis/node/core/roleserve/worker_hostsfile.go
+++ b/metropolis/node/core/roleserve/worker_hostsfile.go
@@ -6,8 +6,8 @@
 	"source.monogon.dev/metropolis/node/core/localstorage"
 	"source.monogon.dev/metropolis/node/core/network"
 	"source.monogon.dev/metropolis/node/core/network/hostsfile"
-	"source.monogon.dev/metropolis/pkg/event/memory"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/event/memory"
+	"source.monogon.dev/osbase/supervisor"
 
 	ipb "source.monogon.dev/metropolis/node/core/curator/proto/api"
 )
diff --git a/metropolis/node/core/roleserve/worker_kubernetes.go b/metropolis/node/core/roleserve/worker_kubernetes.go
index c3fcfb3..eaa092a 100644
--- a/metropolis/node/core/roleserve/worker_kubernetes.go
+++ b/metropolis/node/core/roleserve/worker_kubernetes.go
@@ -13,10 +13,10 @@
 	"source.monogon.dev/metropolis/node/kubernetes"
 	"source.monogon.dev/metropolis/node/kubernetes/containerd"
 	kpki "source.monogon.dev/metropolis/node/kubernetes/pki"
-	"source.monogon.dev/metropolis/pkg/event"
-	"source.monogon.dev/metropolis/pkg/event/memory"
-	"source.monogon.dev/metropolis/pkg/supervisor"
 	cpb "source.monogon.dev/metropolis/proto/common"
+	"source.monogon.dev/osbase/event"
+	"source.monogon.dev/osbase/event/memory"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 // workerKubernetes is the Kubernetes Worker, responsible for launching
diff --git a/metropolis/node/core/roleserve/worker_metrics.go b/metropolis/node/core/roleserve/worker_metrics.go
index 26ec940..e2a78b8 100644
--- a/metropolis/node/core/roleserve/worker_metrics.go
+++ b/metropolis/node/core/roleserve/worker_metrics.go
@@ -8,8 +8,8 @@
 	cpb "source.monogon.dev/metropolis/proto/common"
 
 	"source.monogon.dev/metropolis/node/core/metrics"
-	"source.monogon.dev/metropolis/pkg/event/memory"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/event/memory"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 // workerMetrics runs the Metrics Service, which runs local Prometheus collectors
diff --git a/metropolis/node/core/roleserve/worker_nodemgmt.go b/metropolis/node/core/roleserve/worker_nodemgmt.go
index 17fd0d4..52f1086 100644
--- a/metropolis/node/core/roleserve/worker_nodemgmt.go
+++ b/metropolis/node/core/roleserve/worker_nodemgmt.go
@@ -5,9 +5,9 @@
 
 	"source.monogon.dev/metropolis/node/core/mgmt"
 	"source.monogon.dev/metropolis/node/core/update"
-	"source.monogon.dev/metropolis/pkg/event/memory"
-	"source.monogon.dev/metropolis/pkg/logtree"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/event/memory"
+	"source.monogon.dev/osbase/logtree"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 type workerNodeMgmt struct {
diff --git a/metropolis/node/core/roleserve/worker_rolefetch.go b/metropolis/node/core/roleserve/worker_rolefetch.go
index aaac076..726fc69 100644
--- a/metropolis/node/core/roleserve/worker_rolefetch.go
+++ b/metropolis/node/core/roleserve/worker_rolefetch.go
@@ -7,8 +7,8 @@
 
 	"source.monogon.dev/metropolis/node/core/curator/watcher"
 	"source.monogon.dev/metropolis/node/core/localstorage"
-	"source.monogon.dev/metropolis/pkg/event/memory"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/event/memory"
+	"source.monogon.dev/osbase/supervisor"
 
 	ipb "source.monogon.dev/metropolis/node/core/curator/proto/api"
 	cpb "source.monogon.dev/metropolis/proto/common"
diff --git a/metropolis/node/core/roleserve/worker_statuspush.go b/metropolis/node/core/roleserve/worker_statuspush.go
index 63ab227..1b269c6 100644
--- a/metropolis/node/core/roleserve/worker_statuspush.go
+++ b/metropolis/node/core/roleserve/worker_statuspush.go
@@ -8,10 +8,10 @@
 
 	common "source.monogon.dev/metropolis/node"
 	"source.monogon.dev/metropolis/node/core/network"
-	"source.monogon.dev/metropolis/pkg/event"
-	"source.monogon.dev/metropolis/pkg/event/memory"
-	"source.monogon.dev/metropolis/pkg/supervisor"
 	"source.monogon.dev/metropolis/version"
+	"source.monogon.dev/osbase/event"
+	"source.monogon.dev/osbase/event/memory"
+	"source.monogon.dev/osbase/supervisor"
 
 	ipb "source.monogon.dev/metropolis/node/core/curator/proto/api"
 	cpb "source.monogon.dev/metropolis/proto/common"
diff --git a/metropolis/node/core/roleserve/worker_statuspush_test.go b/metropolis/node/core/roleserve/worker_statuspush_test.go
index 06e48e8..39222bd 100644
--- a/metropolis/node/core/roleserve/worker_statuspush_test.go
+++ b/metropolis/node/core/roleserve/worker_statuspush_test.go
@@ -18,9 +18,9 @@
 	common "source.monogon.dev/metropolis/node"
 	"source.monogon.dev/metropolis/node/core/consensus"
 	"source.monogon.dev/metropolis/node/core/curator"
-	"source.monogon.dev/metropolis/pkg/supervisor"
 	"source.monogon.dev/metropolis/test/util"
 	mversion "source.monogon.dev/metropolis/version"
+	"source.monogon.dev/osbase/supervisor"
 
 	ipb "source.monogon.dev/metropolis/node/core/curator/proto/api"
 	cpb "source.monogon.dev/metropolis/proto/common"
diff --git a/metropolis/node/core/rpc/BUILD.bazel b/metropolis/node/core/rpc/BUILD.bazel
index bdddb1e..b1b4bfc 100644
--- a/metropolis/node/core/rpc/BUILD.bazel
+++ b/metropolis/node/core/rpc/BUILD.bazel
@@ -14,9 +14,9 @@
     visibility = ["//visibility:public"],
     deps = [
         "//metropolis/node/core/identity",
-        "//metropolis/pkg/logtree",
         "//metropolis/proto/api",
         "//metropolis/proto/ext",
+        "//osbase/logtree",
         "@org_golang_google_grpc//:go_default_library",
         "@org_golang_google_grpc//codes",
         "@org_golang_google_grpc//credentials",
@@ -38,10 +38,10 @@
     embed = [":rpc"],
     deps = [
         "//metropolis/node/core/curator/proto/api",
-        "//metropolis/pkg/logtree",
         "//metropolis/proto/api",
         "//metropolis/proto/ext",
         "//metropolis/test/util",
+        "//osbase/logtree",
         "@org_golang_google_grpc//:go_default_library",
         "@org_golang_google_grpc//codes",
         "@org_golang_google_grpc//status",
diff --git a/metropolis/node/core/rpc/server_authentication.go b/metropolis/node/core/rpc/server_authentication.go
index f847126..c7d6e91 100644
--- a/metropolis/node/core/rpc/server_authentication.go
+++ b/metropolis/node/core/rpc/server_authentication.go
@@ -13,7 +13,7 @@
 	"google.golang.org/grpc/status"
 
 	"source.monogon.dev/metropolis/node/core/identity"
-	"source.monogon.dev/metropolis/pkg/logtree"
+	"source.monogon.dev/osbase/logtree"
 )
 
 // ServerSecurity are the security options of a RPC server that will run
diff --git a/metropolis/node/core/rpc/trace.go b/metropolis/node/core/rpc/trace.go
index 0d43806..a686c06 100644
--- a/metropolis/node/core/rpc/trace.go
+++ b/metropolis/node/core/rpc/trace.go
@@ -10,7 +10,7 @@
 	"google.golang.org/protobuf/encoding/prototext"
 	"google.golang.org/protobuf/proto"
 
-	"source.monogon.dev/metropolis/pkg/logtree"
+	"source.monogon.dev/osbase/logtree"
 )
 
 // Span implements a compatible subset of
diff --git a/metropolis/node/core/rpc/trace_test.go b/metropolis/node/core/rpc/trace_test.go
index 750ffe8..9bed935 100644
--- a/metropolis/node/core/rpc/trace_test.go
+++ b/metropolis/node/core/rpc/trace_test.go
@@ -6,7 +6,7 @@
 	"strings"
 	"testing"
 
-	"source.monogon.dev/metropolis/pkg/logtree"
+	"source.monogon.dev/osbase/logtree"
 )
 
 // TestSpanRecording exercises the span->logtree forwarding functionality by
diff --git a/metropolis/node/core/sysctl.go b/metropolis/node/core/sysctl.go
index eb72aa3..01b576c 100644
--- a/metropolis/node/core/sysctl.go
+++ b/metropolis/node/core/sysctl.go
@@ -4,8 +4,8 @@
 	"context"
 	"strconv"
 
-	"source.monogon.dev/metropolis/pkg/supervisor"
-	"source.monogon.dev/metropolis/pkg/sysctl"
+	"source.monogon.dev/osbase/supervisor"
+	"source.monogon.dev/osbase/sysctl"
 )
 
 func nodeSysctls(ctx context.Context) error {
diff --git a/metropolis/node/core/time/BUILD.bazel b/metropolis/node/core/time/BUILD.bazel
index fb9af73..f113153 100644
--- a/metropolis/node/core/time/BUILD.bazel
+++ b/metropolis/node/core/time/BUILD.bazel
@@ -7,7 +7,7 @@
     visibility = ["//visibility:public"],
     deps = [
         "//metropolis/node",
-        "//metropolis/pkg/fileargs",
-        "//metropolis/pkg/supervisor",
+        "//osbase/fileargs",
+        "//osbase/supervisor",
     ],
 )
diff --git a/metropolis/node/core/time/time.go b/metropolis/node/core/time/time.go
index f57e892..3e37a0c 100644
--- a/metropolis/node/core/time/time.go
+++ b/metropolis/node/core/time/time.go
@@ -18,8 +18,8 @@
 	"strings"
 
 	"source.monogon.dev/metropolis/node"
-	"source.monogon.dev/metropolis/pkg/fileargs"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/fileargs"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 // Service implements the time service. See package documentation for further
diff --git a/metropolis/node/core/update/BUILD.bazel b/metropolis/node/core/update/BUILD.bazel
index bc5561a..30ca20b 100644
--- a/metropolis/node/core/update/BUILD.bazel
+++ b/metropolis/node/core/update/BUILD.bazel
@@ -11,11 +11,11 @@
     deps = [
         "//metropolis/node/build/mkimage/osimage",
         "//metropolis/node/core/abloader/spec",
-        "//metropolis/pkg/blockdev",
-        "//metropolis/pkg/efivarfs",
-        "//metropolis/pkg/gpt",
-        "//metropolis/pkg/kexec",
-        "//metropolis/pkg/logtree",
+        "//osbase/blockdev",
+        "//osbase/efivarfs",
+        "//osbase/gpt",
+        "//osbase/kexec",
+        "//osbase/logtree",
         "@com_github_cenkalti_backoff_v4//:backoff",
         "@org_golang_google_grpc//codes",
         "@org_golang_google_grpc//status",
diff --git a/metropolis/node/core/update/e2e/BUILD.bazel b/metropolis/node/core/update/e2e/BUILD.bazel
index 0b3fbce..b96006c 100644
--- a/metropolis/node/core/update/e2e/BUILD.bazel
+++ b/metropolis/node/core/update/e2e/BUILD.bazel
@@ -16,8 +16,8 @@
     ],
     deps = [
         "//metropolis/node/build/mkimage/osimage",
-        "//metropolis/pkg/blkio",
-        "//metropolis/pkg/blockdev",
+        "//osbase/blkio",
+        "//osbase/blockdev",
         "@io_bazel_rules_go//go/runfiles:go_default_library",
     ],
 )
diff --git a/metropolis/node/core/update/e2e/e2e_test.go b/metropolis/node/core/update/e2e/e2e_test.go
index 0f712a8..07c6bf4 100644
--- a/metropolis/node/core/update/e2e/e2e_test.go
+++ b/metropolis/node/core/update/e2e/e2e_test.go
@@ -19,8 +19,8 @@
 	"github.com/bazelbuild/rules_go/go/runfiles"
 
 	"source.monogon.dev/metropolis/node/build/mkimage/osimage"
-	"source.monogon.dev/metropolis/pkg/blkio"
-	"source.monogon.dev/metropolis/pkg/blockdev"
+	"source.monogon.dev/osbase/blkio"
+	"source.monogon.dev/osbase/blockdev"
 )
 
 const Mi = 1024 * 1024
diff --git a/metropolis/node/core/update/e2e/testos/BUILD.bazel b/metropolis/node/core/update/e2e/testos/BUILD.bazel
index 79fd0f9..275a44c 100644
--- a/metropolis/node/core/update/e2e/testos/BUILD.bazel
+++ b/metropolis/node/core/update/e2e/testos/BUILD.bazel
@@ -16,10 +16,10 @@
         "//metropolis/node/build/mkimage/osimage",
         "//metropolis/node/core/network",
         "//metropolis/node/core/update",
-        "//metropolis/pkg/blockdev",
-        "//metropolis/pkg/gpt",
-        "//metropolis/pkg/logtree",
-        "//metropolis/pkg/supervisor",
+        "//osbase/blockdev",
+        "//osbase/gpt",
+        "//osbase/logtree",
+        "//osbase/supervisor",
         "@org_golang_x_sys//unix",
     ],
 )
diff --git a/metropolis/node/core/update/e2e/testos/main.go b/metropolis/node/core/update/e2e/testos/main.go
index 95f865c..e77a4e2 100644
--- a/metropolis/node/core/update/e2e/testos/main.go
+++ b/metropolis/node/core/update/e2e/testos/main.go
@@ -11,10 +11,10 @@
 	"source.monogon.dev/metropolis/node/build/mkimage/osimage"
 	"source.monogon.dev/metropolis/node/core/network"
 	"source.monogon.dev/metropolis/node/core/update"
-	"source.monogon.dev/metropolis/pkg/blockdev"
-	"source.monogon.dev/metropolis/pkg/gpt"
-	"source.monogon.dev/metropolis/pkg/logtree"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/blockdev"
+	"source.monogon.dev/osbase/gpt"
+	"source.monogon.dev/osbase/logtree"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 var Variant = "U"
diff --git a/metropolis/node/core/update/update.go b/metropolis/node/core/update/update.go
index 8490c78..28b2381 100644
--- a/metropolis/node/core/update/update.go
+++ b/metropolis/node/core/update/update.go
@@ -25,11 +25,11 @@
 
 	"source.monogon.dev/metropolis/node/build/mkimage/osimage"
 	abloaderpb "source.monogon.dev/metropolis/node/core/abloader/spec"
-	"source.monogon.dev/metropolis/pkg/blockdev"
-	"source.monogon.dev/metropolis/pkg/efivarfs"
-	"source.monogon.dev/metropolis/pkg/gpt"
-	"source.monogon.dev/metropolis/pkg/kexec"
-	"source.monogon.dev/metropolis/pkg/logtree"
+	"source.monogon.dev/osbase/blockdev"
+	"source.monogon.dev/osbase/efivarfs"
+	"source.monogon.dev/osbase/gpt"
+	"source.monogon.dev/osbase/kexec"
+	"source.monogon.dev/osbase/logtree"
 )
 
 // Service contains data and functionality to perform A/B updates on a
diff --git a/metropolis/node/kubernetes/BUILD.bazel b/metropolis/node/kubernetes/BUILD.bazel
index 854f6c3..08666ab 100644
--- a/metropolis/node/kubernetes/BUILD.bazel
+++ b/metropolis/node/kubernetes/BUILD.bazel
@@ -33,14 +33,14 @@
         "//metropolis/node/kubernetes/pki",
         "//metropolis/node/kubernetes/plugins/kvmdevice",
         "//metropolis/node/kubernetes/reconciler",
-        "//metropolis/pkg/event",
-        "//metropolis/pkg/event/memory",
-        "//metropolis/pkg/fileargs",
-        "//metropolis/pkg/fsquota",
-        "//metropolis/pkg/logtree",
-        "//metropolis/pkg/loop",
-        "//metropolis/pkg/supervisor",
         "//metropolis/proto/api",
+        "//osbase/event",
+        "//osbase/event/memory",
+        "//osbase/fileargs",
+        "//osbase/fsquota",
+        "//osbase/logtree",
+        "//osbase/loop",
+        "//osbase/supervisor",
         "@com_github_container_storage_interface_spec//lib/go/csi",
         "@io_k8s_api//core/v1:core",
         "@io_k8s_api//storage/v1:storage",
diff --git a/metropolis/node/kubernetes/apiproxy.go b/metropolis/node/kubernetes/apiproxy.go
index d937824..0289111 100644
--- a/metropolis/node/kubernetes/apiproxy.go
+++ b/metropolis/node/kubernetes/apiproxy.go
@@ -8,7 +8,7 @@
 	"source.monogon.dev/metropolis/node"
 	ipb "source.monogon.dev/metropolis/node/core/curator/proto/api"
 	"source.monogon.dev/metropolis/node/core/curator/watcher"
-	"source.monogon.dev/metropolis/pkg/event/memory"
+	"source.monogon.dev/osbase/event/memory"
 )
 
 // updateLoadBalancerAPIServers provides a tinylb BackendSet memory value with
diff --git a/metropolis/node/kubernetes/apiserver.go b/metropolis/node/kubernetes/apiserver.go
index 70c4707..45b2582 100644
--- a/metropolis/node/kubernetes/apiserver.go
+++ b/metropolis/node/kubernetes/apiserver.go
@@ -34,8 +34,8 @@
 	common "source.monogon.dev/metropolis/node"
 	"source.monogon.dev/metropolis/node/core/localstorage"
 	"source.monogon.dev/metropolis/node/kubernetes/pki"
-	"source.monogon.dev/metropolis/pkg/fileargs"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/fileargs"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 type apiserverService struct {
diff --git a/metropolis/node/kubernetes/authproxy/BUILD.bazel b/metropolis/node/kubernetes/authproxy/BUILD.bazel
index 9cf57cb..263e846 100644
--- a/metropolis/node/kubernetes/authproxy/BUILD.bazel
+++ b/metropolis/node/kubernetes/authproxy/BUILD.bazel
@@ -9,7 +9,7 @@
         "//metropolis/node",
         "//metropolis/node/core/identity",
         "//metropolis/node/kubernetes/pki",
-        "//metropolis/pkg/supervisor",
+        "//osbase/supervisor",
         "@io_k8s_apimachinery//pkg/apis/meta/v1:meta",
     ],
 )
diff --git a/metropolis/node/kubernetes/authproxy/authproxy.go b/metropolis/node/kubernetes/authproxy/authproxy.go
index c4a844e..9b24d19 100644
--- a/metropolis/node/kubernetes/authproxy/authproxy.go
+++ b/metropolis/node/kubernetes/authproxy/authproxy.go
@@ -20,7 +20,7 @@
 	"source.monogon.dev/metropolis/node"
 	"source.monogon.dev/metropolis/node/core/identity"
 	"source.monogon.dev/metropolis/node/kubernetes/pki"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 type Service struct {
diff --git a/metropolis/node/kubernetes/clusternet/BUILD.bazel b/metropolis/node/kubernetes/clusternet/BUILD.bazel
index 2452b74..6b4d744 100644
--- a/metropolis/node/kubernetes/clusternet/BUILD.bazel
+++ b/metropolis/node/kubernetes/clusternet/BUILD.bazel
@@ -7,9 +7,9 @@
     visibility = ["//metropolis/node/kubernetes:__subpackages__"],
     deps = [
         "//metropolis/node/core/clusternet",
-        "//metropolis/pkg/event",
-        "//metropolis/pkg/logtree",
-        "//metropolis/pkg/supervisor",
+        "//osbase/event",
+        "//osbase/logtree",
+        "//osbase/supervisor",
         "@io_k8s_api//core/v1:core",
         "@io_k8s_apimachinery//pkg/fields",
         "@io_k8s_client_go//kubernetes",
diff --git a/metropolis/node/kubernetes/clusternet/clusternet.go b/metropolis/node/kubernetes/clusternet/clusternet.go
index 7b51c30..28e268d 100644
--- a/metropolis/node/kubernetes/clusternet/clusternet.go
+++ b/metropolis/node/kubernetes/clusternet/clusternet.go
@@ -42,9 +42,9 @@
 	"k8s.io/client-go/tools/cache"
 
 	oclusternet "source.monogon.dev/metropolis/node/core/clusternet"
-	"source.monogon.dev/metropolis/pkg/event"
-	"source.monogon.dev/metropolis/pkg/logtree"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/event"
+	"source.monogon.dev/osbase/logtree"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 type Service struct {
diff --git a/metropolis/node/kubernetes/containerd/BUILD.bazel b/metropolis/node/kubernetes/containerd/BUILD.bazel
index ef6606d..0c61925 100644
--- a/metropolis/node/kubernetes/containerd/BUILD.bazel
+++ b/metropolis/node/kubernetes/containerd/BUILD.bazel
@@ -7,7 +7,7 @@
     visibility = ["//metropolis/node/core:__subpackages__"],
     deps = [
         "//metropolis/node/core/localstorage",
-        "//metropolis/pkg/supervisor",
+        "//osbase/supervisor",
         "@com_github_containerd_containerd//:containerd",
         "@com_github_containerd_containerd//namespaces",
     ],
diff --git a/metropolis/node/kubernetes/containerd/main.go b/metropolis/node/kubernetes/containerd/main.go
index 28fc98d..6782137 100644
--- a/metropolis/node/kubernetes/containerd/main.go
+++ b/metropolis/node/kubernetes/containerd/main.go
@@ -30,7 +30,7 @@
 	"github.com/containerd/containerd/namespaces"
 
 	"source.monogon.dev/metropolis/node/core/localstorage"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 const (
diff --git a/metropolis/node/kubernetes/controller-manager.go b/metropolis/node/kubernetes/controller-manager.go
index 71918f9..0a49ce1 100644
--- a/metropolis/node/kubernetes/controller-manager.go
+++ b/metropolis/node/kubernetes/controller-manager.go
@@ -24,8 +24,8 @@
 	"os/exec"
 
 	"source.monogon.dev/metropolis/node/kubernetes/pki"
-	"source.monogon.dev/metropolis/pkg/fileargs"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/fileargs"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 type controllerManagerConfig struct {
diff --git a/metropolis/node/kubernetes/csi.go b/metropolis/node/kubernetes/csi.go
index c0d81bb..6f6c3a3 100644
--- a/metropolis/node/kubernetes/csi.go
+++ b/metropolis/node/kubernetes/csi.go
@@ -34,10 +34,10 @@
 	pluginregistration "k8s.io/kubelet/pkg/apis/pluginregistration/v1"
 
 	"source.monogon.dev/metropolis/node/core/localstorage"
-	"source.monogon.dev/metropolis/pkg/fsquota"
-	"source.monogon.dev/metropolis/pkg/logtree"
-	"source.monogon.dev/metropolis/pkg/loop"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/fsquota"
+	"source.monogon.dev/osbase/logtree"
+	"source.monogon.dev/osbase/loop"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 // Derived from K8s spec for acceptable names, but shortened to 130 characters
diff --git a/metropolis/node/kubernetes/kubelet.go b/metropolis/node/kubernetes/kubelet.go
index 1fefbca..19a79b2 100644
--- a/metropolis/node/kubernetes/kubelet.go
+++ b/metropolis/node/kubernetes/kubelet.go
@@ -33,8 +33,8 @@
 	"source.monogon.dev/metropolis/node/core/localstorage"
 	"source.monogon.dev/metropolis/node/kubernetes/pki"
 	"source.monogon.dev/metropolis/node/kubernetes/reconciler"
-	"source.monogon.dev/metropolis/pkg/fileargs"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/fileargs"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 type kubeletService struct {
diff --git a/metropolis/node/kubernetes/metricsproxy/BUILD.bazel b/metropolis/node/kubernetes/metricsproxy/BUILD.bazel
index 95f8b2c..7f89450 100644
--- a/metropolis/node/kubernetes/metricsproxy/BUILD.bazel
+++ b/metropolis/node/kubernetes/metricsproxy/BUILD.bazel
@@ -8,7 +8,7 @@
     deps = [
         "//metropolis/node",
         "//metropolis/node/kubernetes/pki",
-        "//metropolis/pkg/supervisor",
+        "//osbase/supervisor",
         "@io_k8s_kubernetes//cmd/kubeadm/app/constants",
     ],
 )
diff --git a/metropolis/node/kubernetes/metricsproxy/metricsproxy.go b/metropolis/node/kubernetes/metricsproxy/metricsproxy.go
index bc44a34..afa142d 100644
--- a/metropolis/node/kubernetes/metricsproxy/metricsproxy.go
+++ b/metropolis/node/kubernetes/metricsproxy/metricsproxy.go
@@ -16,7 +16,7 @@
 
 	"source.monogon.dev/metropolis/node"
 	"source.monogon.dev/metropolis/node/kubernetes/pki"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 type Service struct {
diff --git a/metropolis/node/kubernetes/nfproxy/BUILD.bazel b/metropolis/node/kubernetes/nfproxy/BUILD.bazel
index 539516a..b445c63 100644
--- a/metropolis/node/kubernetes/nfproxy/BUILD.bazel
+++ b/metropolis/node/kubernetes/nfproxy/BUILD.bazel
@@ -6,7 +6,7 @@
     importpath = "source.monogon.dev/metropolis/node/kubernetes/nfproxy",
     visibility = ["//metropolis/node/kubernetes:__subpackages__"],
     deps = [
-        "//metropolis/pkg/supervisor",
+        "//osbase/supervisor",
         "@com_github_sbezverk_nfproxy//pkg/controller",
         "@com_github_sbezverk_nfproxy//pkg/nftables",
         "@com_github_sbezverk_nfproxy//pkg/proxy",
diff --git a/metropolis/node/kubernetes/nfproxy/nfproxy.go b/metropolis/node/kubernetes/nfproxy/nfproxy.go
index 637be7b..8e0450b 100644
--- a/metropolis/node/kubernetes/nfproxy/nfproxy.go
+++ b/metropolis/node/kubernetes/nfproxy/nfproxy.go
@@ -40,7 +40,7 @@
 	"k8s.io/client-go/tools/cache"
 	"k8s.io/client-go/tools/record"
 
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 type Service struct {
diff --git a/metropolis/node/kubernetes/pki/BUILD.bazel b/metropolis/node/kubernetes/pki/BUILD.bazel
index 1471fd3..60121c7 100644
--- a/metropolis/node/kubernetes/pki/BUILD.bazel
+++ b/metropolis/node/kubernetes/pki/BUILD.bazel
@@ -8,7 +8,7 @@
     deps = [
         "//metropolis/node",
         "//metropolis/node/core/consensus",
-        "//metropolis/pkg/pki",
+        "//osbase/pki",
         "@io_etcd_go_etcd_client_v3//:client",
         "@io_k8s_client_go//tools/clientcmd",
         "@io_k8s_client_go//tools/clientcmd/api",
diff --git a/metropolis/node/kubernetes/pki/kubernetes.go b/metropolis/node/kubernetes/pki/kubernetes.go
index 66731ae..5ea1e3e 100644
--- a/metropolis/node/kubernetes/pki/kubernetes.go
+++ b/metropolis/node/kubernetes/pki/kubernetes.go
@@ -14,7 +14,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-// package pki builds upon metropolis/pkg/pki/ to provide an
+// package pki builds upon osbase/pki/ to provide an
 // etcd-backed implementation of all x509 PKI Certificates/CAs required to run
 // Kubernetes.
 // Most elements of the PKI are 'static' long-standing certificates/credentials
@@ -41,7 +41,7 @@
 
 	common "source.monogon.dev/metropolis/node"
 	"source.monogon.dev/metropolis/node/core/consensus"
-	opki "source.monogon.dev/metropolis/pkg/pki"
+	opki "source.monogon.dev/osbase/pki"
 )
 
 // KubeCertificateName is an enum-like unique name of a static Kubernetes
diff --git a/metropolis/node/kubernetes/plugins/kvmdevice/BUILD.bazel b/metropolis/node/kubernetes/plugins/kvmdevice/BUILD.bazel
index 7d9b43f..c8b4ca4 100644
--- a/metropolis/node/kubernetes/plugins/kvmdevice/BUILD.bazel
+++ b/metropolis/node/kubernetes/plugins/kvmdevice/BUILD.bazel
@@ -7,8 +7,8 @@
     visibility = ["//visibility:public"],
     deps = [
         "//metropolis/node/core/localstorage",
-        "//metropolis/pkg/logtree",
-        "//metropolis/pkg/supervisor",
+        "//osbase/logtree",
+        "//osbase/supervisor",
         "@io_k8s_api//core/v1:core",
         "@io_k8s_kubelet//pkg/apis/deviceplugin/v1beta1",
         "@io_k8s_kubelet//pkg/apis/pluginregistration/v1:pluginregistration",
diff --git a/metropolis/node/kubernetes/plugins/kvmdevice/kvmdevice.go b/metropolis/node/kubernetes/plugins/kvmdevice/kvmdevice.go
index 90fdc44..f285c47 100644
--- a/metropolis/node/kubernetes/plugins/kvmdevice/kvmdevice.go
+++ b/metropolis/node/kubernetes/plugins/kvmdevice/kvmdevice.go
@@ -40,8 +40,8 @@
 	pluginregistration "k8s.io/kubelet/pkg/apis/pluginregistration/v1"
 
 	"source.monogon.dev/metropolis/node/core/localstorage"
-	"source.monogon.dev/metropolis/pkg/logtree"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/logtree"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 // Name is the name of the KVM devices this plugin exposes
diff --git a/metropolis/node/kubernetes/provisioner.go b/metropolis/node/kubernetes/provisioner.go
index 38de7df..923302e 100644
--- a/metropolis/node/kubernetes/provisioner.go
+++ b/metropolis/node/kubernetes/provisioner.go
@@ -40,9 +40,9 @@
 	"k8s.io/client-go/util/workqueue"
 
 	"source.monogon.dev/metropolis/node/core/localstorage"
-	"source.monogon.dev/metropolis/pkg/fsquota"
-	"source.monogon.dev/metropolis/pkg/logtree"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/fsquota"
+	"source.monogon.dev/osbase/logtree"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 // ONCHANGE(//metropolis/node/kubernetes/reconciler:resources_csi.go): needs to
diff --git a/metropolis/node/kubernetes/reconciler/BUILD.bazel b/metropolis/node/kubernetes/reconciler/BUILD.bazel
index f7bb47f..1616787 100644
--- a/metropolis/node/kubernetes/reconciler/BUILD.bazel
+++ b/metropolis/node/kubernetes/reconciler/BUILD.bazel
@@ -16,10 +16,10 @@
         "//metropolis/node/core/consensus/client",
         "//metropolis/node/core/curator",
         "//metropolis/node/core/curator/proto/private",
-        "//metropolis/pkg/event/etcd",
-        "//metropolis/pkg/event/memory",
-        "//metropolis/pkg/supervisor",
         "//metropolis/version",
+        "//osbase/event/etcd",
+        "//osbase/event/memory",
+        "//osbase/supervisor",
         "//version",
         "//version/spec",
         "@com_github_cenkalti_backoff_v4//:backoff",
@@ -50,9 +50,9 @@
         "//metropolis/node/core/consensus/client",
         "//metropolis/node/core/curator",
         "//metropolis/node/core/curator/proto/private",
-        "//metropolis/pkg/supervisor",
         "//metropolis/proto/common",
         "//metropolis/version",
+        "//osbase/supervisor",
         "//version",
         "//version/spec",
         "@io_etcd_go_etcd_tests_v3//integration",
diff --git a/metropolis/node/kubernetes/reconciler/reconciler.go b/metropolis/node/kubernetes/reconciler/reconciler.go
index 3bfaa4d..523b31b 100644
--- a/metropolis/node/kubernetes/reconciler/reconciler.go
+++ b/metropolis/node/kubernetes/reconciler/reconciler.go
@@ -38,7 +38,7 @@
 	meta "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/client-go/kubernetes"
 
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 // True is a sad workaround for all the pointer booleans in K8s specs
diff --git a/metropolis/node/kubernetes/reconciler/reconciler_status.go b/metropolis/node/kubernetes/reconciler/reconciler_status.go
index 4abf6f8..b139e0a 100644
--- a/metropolis/node/kubernetes/reconciler/reconciler_status.go
+++ b/metropolis/node/kubernetes/reconciler/reconciler_status.go
@@ -16,10 +16,10 @@
 	"source.monogon.dev/metropolis/node/core/consensus/client"
 	"source.monogon.dev/metropolis/node/core/curator"
 	ppb "source.monogon.dev/metropolis/node/core/curator/proto/private"
-	"source.monogon.dev/metropolis/pkg/event/etcd"
-	"source.monogon.dev/metropolis/pkg/event/memory"
-	"source.monogon.dev/metropolis/pkg/supervisor"
 	mversion "source.monogon.dev/metropolis/version"
+	"source.monogon.dev/osbase/event/etcd"
+	"source.monogon.dev/osbase/event/memory"
+	"source.monogon.dev/osbase/supervisor"
 	"source.monogon.dev/version"
 	vpb "source.monogon.dev/version/spec"
 )
diff --git a/metropolis/node/kubernetes/reconciler/reconciler_status_test.go b/metropolis/node/kubernetes/reconciler/reconciler_status_test.go
index bd627a2..9eedfbe 100644
--- a/metropolis/node/kubernetes/reconciler/reconciler_status_test.go
+++ b/metropolis/node/kubernetes/reconciler/reconciler_status_test.go
@@ -12,9 +12,9 @@
 	"source.monogon.dev/metropolis/node/core/consensus/client"
 	"source.monogon.dev/metropolis/node/core/curator"
 	ppb "source.monogon.dev/metropolis/node/core/curator/proto/private"
-	"source.monogon.dev/metropolis/pkg/supervisor"
 	cpb "source.monogon.dev/metropolis/proto/common"
 	mversion "source.monogon.dev/metropolis/version"
+	"source.monogon.dev/osbase/supervisor"
 	"source.monogon.dev/version"
 	vpb "source.monogon.dev/version/spec"
 )
diff --git a/metropolis/node/kubernetes/reconciler/reconciler_test.go b/metropolis/node/kubernetes/reconciler/reconciler_test.go
index b791dbe..f457859 100644
--- a/metropolis/node/kubernetes/reconciler/reconciler_test.go
+++ b/metropolis/node/kubernetes/reconciler/reconciler_test.go
@@ -33,7 +33,7 @@
 	installrbac "k8s.io/kubernetes/pkg/apis/rbac/install"
 	installstorage "k8s.io/kubernetes/pkg/apis/storage/install"
 
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 // TestExpectedUniqueNames ensures that all the Expected objects of any
diff --git a/metropolis/node/kubernetes/scheduler.go b/metropolis/node/kubernetes/scheduler.go
index 1b9b12c..cfa338a 100644
--- a/metropolis/node/kubernetes/scheduler.go
+++ b/metropolis/node/kubernetes/scheduler.go
@@ -23,8 +23,8 @@
 	"os/exec"
 
 	"source.monogon.dev/metropolis/node/kubernetes/pki"
-	"source.monogon.dev/metropolis/pkg/fileargs"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/fileargs"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 type schedulerConfig struct {
diff --git a/metropolis/node/kubernetes/service_controller.go b/metropolis/node/kubernetes/service_controller.go
index 6b4360b..8ce36aa 100644
--- a/metropolis/node/kubernetes/service_controller.go
+++ b/metropolis/node/kubernetes/service_controller.go
@@ -35,8 +35,8 @@
 	"source.monogon.dev/metropolis/node/kubernetes/metricsproxy"
 	"source.monogon.dev/metropolis/node/kubernetes/pki"
 	"source.monogon.dev/metropolis/node/kubernetes/reconciler"
-	"source.monogon.dev/metropolis/pkg/supervisor"
 	apb "source.monogon.dev/metropolis/proto/api"
+	"source.monogon.dev/osbase/supervisor"
 )
 
 type ConfigController struct {
diff --git a/metropolis/node/kubernetes/service_worker.go b/metropolis/node/kubernetes/service_worker.go
index 7ad985f..b4daba1 100644
--- a/metropolis/node/kubernetes/service_worker.go
+++ b/metropolis/node/kubernetes/service_worker.go
@@ -21,9 +21,9 @@
 	"source.monogon.dev/metropolis/node/kubernetes/nfproxy"
 	kpki "source.monogon.dev/metropolis/node/kubernetes/pki"
 	"source.monogon.dev/metropolis/node/kubernetes/plugins/kvmdevice"
-	"source.monogon.dev/metropolis/pkg/event"
-	"source.monogon.dev/metropolis/pkg/event/memory"
-	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/osbase/event"
+	"source.monogon.dev/osbase/event/memory"
+	"source.monogon.dev/osbase/supervisor"
 
 	ipb "source.monogon.dev/metropolis/node/core/curator/proto/api"
 )