treewide: move build helper to more fitting places

Change-Id: I3d0cfe9283222d403ae369ec9db09201ad511e15
Reviewed-on: https://review.monogon.dev/c/monogon/+/3327
Reviewed-by: Serge Bazanski <serge@monogon.tech>
Tested-by: Jenkins CI
diff --git a/metropolis/installer/BUILD.bazel b/metropolis/installer/BUILD.bazel
index a0d1993..29eac44 100644
--- a/metropolis/installer/BUILD.bazel
+++ b/metropolis/installer/BUILD.bazel
@@ -1,7 +1,7 @@
 load("@io_bazel_rules_go//go:def.bzl", "go_binary", "go_library")
-load("//metropolis/node/build:def.bzl", "node_initramfs")
-load("//metropolis/node/build/genosrelease:defs.bzl", "os_release")
-load("//metropolis/node/build:efi.bzl", "efi_unified_kernel_image")
+load("//osbase/build:def.bzl", "node_initramfs")
+load("//osbase/build/genosrelease:defs.bzl", "os_release")
+load("//osbase/build:efi.bzl", "efi_unified_kernel_image")
 
 go_library(
     name = "installer_lib",
@@ -15,8 +15,8 @@
     importpath = "source.monogon.dev/metropolis/installer",
     visibility = ["//visibility:private"],
     deps = [
-        "//metropolis/node/build/mkimage/osimage",
         "//osbase/blockdev",
+        "//osbase/build/mkimage/osimage",
         "//osbase/efivarfs",
         "//osbase/sysfs",
         "@org_golang_x_sys//unix",
@@ -35,7 +35,7 @@
         "//metropolis/installer": "/init",
     },
     fsspecs = [
-        "//metropolis/node/build:earlydev.fsspec",
+        "//osbase/build:earlydev.fsspec",
     ],
     visibility = ["//metropolis/installer/test:__pkg__"],
 )
diff --git a/metropolis/installer/main.go b/metropolis/installer/main.go
index bc428a0..e2d0d55 100644
--- a/metropolis/installer/main.go
+++ b/metropolis/installer/main.go
@@ -34,8 +34,8 @@
 
 	"golang.org/x/sys/unix"
 
-	"source.monogon.dev/metropolis/node/build/mkimage/osimage"
 	"source.monogon.dev/osbase/blockdev"
+	"source.monogon.dev/osbase/build/mkimage/osimage"
 	"source.monogon.dev/osbase/efivarfs"
 	"source.monogon.dev/osbase/sysfs"
 )
diff --git a/metropolis/installer/test/BUILD.bazel b/metropolis/installer/test/BUILD.bazel
index 3f74cde..9971209 100644
--- a/metropolis/installer/test/BUILD.bazel
+++ b/metropolis/installer/test/BUILD.bazel
@@ -1,5 +1,5 @@
 load("@io_bazel_rules_go//go:def.bzl", "go_test")
-load("//metropolis/node/build:efi.bzl", "efi_unified_kernel_image")
+load("//osbase/build:efi.bzl", "efi_unified_kernel_image")
 
 go_test(
     name = "test_test",
@@ -23,8 +23,8 @@
     },
     deps = [
         "//metropolis/cli/metroctl/core",
-        "//metropolis/node/build/mkimage/osimage",
         "//metropolis/proto/api",
+        "//osbase/build/mkimage/osimage",
         "//osbase/cmd",
         "@com_github_diskfs_go_diskfs//:go-diskfs",
         "@com_github_diskfs_go_diskfs//disk",
diff --git a/metropolis/installer/test/run_test.go b/metropolis/installer/test/run_test.go
index fef8e20..64fa210 100644
--- a/metropolis/installer/test/run_test.go
+++ b/metropolis/installer/test/run_test.go
@@ -38,7 +38,7 @@
 	"source.monogon.dev/metropolis/proto/api"
 
 	mctl "source.monogon.dev/metropolis/cli/metroctl/core"
-	"source.monogon.dev/metropolis/node/build/mkimage/osimage"
+	"source.monogon.dev/osbase/build/mkimage/osimage"
 	"source.monogon.dev/osbase/cmd"
 )
 
diff --git a/metropolis/installer/test/testos/BUILD.bazel b/metropolis/installer/test/testos/BUILD.bazel
index 8d5f267..d1ae0df 100644
--- a/metropolis/installer/test/testos/BUILD.bazel
+++ b/metropolis/installer/test/testos/BUILD.bazel
@@ -1,6 +1,6 @@
 load("@io_bazel_rules_go//go:def.bzl", "go_binary", "go_library")
-load("//metropolis/node/build:def.bzl", "erofs_image", "verity_image")
-load("//metropolis/node/build:efi.bzl", "efi_unified_kernel_image")
+load("//osbase/build:def.bzl", "erofs_image", "verity_image")
+load("//osbase/build:efi.bzl", "efi_unified_kernel_image")
 load("@rules_pkg//:pkg.bzl", "pkg_zip")
 
 erofs_image(