build: add support for filtered stamp file

The stable status file changes whenever a commit is made, which triggers
unnecessary rebuilds of targets which are only stamped with variables
which change less often. My idea for fixing this is to create a filtered
stamp file with only the variables which change less often, and then
make targets depend on this more stable stamp file instead of the stable
status file.

This change adds a Bazel rule for generating such a filtered stamp file,
and a patch for rules_go which allows using the filtered file in x_defs.

Change-Id: I1a98babeb0cc5edeac6a90c655117305c499f744
Reviewed-on: https://review.monogon.dev/c/monogon/+/4166
Reviewed-by: Tim Windelschmidt <tim@monogon.tech>
Tested-by: Jenkins CI
5 files changed
tree: fcfce746a89ec85fc47ab4c2901ca43dbdc78142
  1. .vscode/
  2. build/
  3. cloud/
  4. go/
  5. intellij/
  6. metropolis/
  7. osbase/
  8. third_party/
  9. tools/
  10. version/
  11. .bazelignore
  12. .bazelproject
  13. .bazelrc
  14. .bazelrc.ci
  15. .bazelrc.sandboxroot
  16. .bazelversion
  17. .git-ignore-revs
  18. .gitignore
  19. BUILD.bazel
  20. CODING_STANDARDS.md
  21. go.mod
  22. go.sum
  23. LICENSE
  24. MODULE.bazel
  25. MODULE.bazel.lock
  26. README.md
  27. SETUP.md
  28. shell.nix
  29. WORKSPACE
README.md

Monogon Monorepo

This is the main repository containing the source code for the Monogon Platform.

This is pre-release software - take a look, and check back later! In the meantime, join us on Matrix (#monogon-os-community:matrix.org) or Discord.

Environment

Our build environment is self-contained and requires only minimal host dependencies:

  • A Linux machine or VM.
  • Bazelisk >= v1.15.0 (or a working Nix environment).
  • A reasonably recent kernel with user namespaces enabled.
  • Working KVM with access to /dev/kvm (if you want to run tests).

Our docs assume that Bazelisk is available as bazel on your PATH.

Refer to SETUP.md for detailed instructions.

Monogon OS

The source code lives in //metropolis (Metropolis is the codename of Monogon OS).

See the //metropolis/README.md for a developer quick start guide, or see the Monogon OS Handbook for user documentation.