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[Nexthop] Core Infrastructure for FBOSS Image Builder#793

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raghav-nexthop wants to merge 7 commits intofacebook:mainfrom
nexthop-ai:raghav.distro-cli-core
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[Nexthop] Core Infrastructure for FBOSS Image Builder#793
raghav-nexthop wants to merge 7 commits intofacebook:mainfrom
nexthop-ai:raghav.distro-cli-core

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@raghav-nexthop raghav-nexthop commented Jan 9, 2026 •
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Pre-submission checklist

  • I've ran the linters locally and fixed lint errors related to the files I modified in this PR. You can install the linters by running pip install -r requirements-dev.txt && pre-commit install
  • pre-commit run

Summary

This PR adds the infrastructure pieces for the FBOSS Image Builder's distro_cli tool. It creates infrastructure for manifest parsing, path resolution, error handling, and shared constants.

  • Exception handling (lib/exceptions.py): Custom exception classes for build errors, validation errors, and component-specific failures
  • Constants (lib/constants.py): Shared configuration for Docker settings and build paths
  • Path utilities (lib/paths.py): Helper functions for resolving component paths (relative and URL-based)
  • Manifest parsing (lib/manifest.py): ImageManifest class for loading and validating build configuration JSON files
  • Test infrastructure (tests/manifest_test.py, tests/data/dev_image.json): Unit tests and test data for manifest functionality

This PR is part of a series. The previous one is #792 and the next one is #794

Test Plan

Pre-commit checks: PASSED

Unit tests: 5/5 passing

PYTHONPATH=fboss-image python3 -m pytest fboss-image/distro_cli/tests/manifest_test.py -v
test_has_component PASSED
test_load_manifest PASSED
test_missing_components PASSED
test_resolve_path_relative PASSED
test_resolve_path_url PASSED

@raghav-nexthop
[Nexthop] Add FBOSS-OSS Kernel
de68ddb 
Summary:

Here an RPM specfile and surrounding machinery is added to build an
FBOSS-compatible Linux kernel from vanilla Linux sources which is
compatible with CentOS. On top of this reference configuration,
additional local changes from `fboss-local-overrides.yaml` are applied
prior to building.

To use, inside an FBOSS build container, run:

    # fboss-image/kernel/scripts/build_kernel.sh 6.4.3 out
    ...
    Kernel RPM build complete!
    Output files:
    out/x86_64/kernel-modules-6.4.3-1.fboss.el9.x86_64.rpm
    out/x86_64/kernel-headers-6.4.3-1.fboss.el9.x86_64.rpm
    out/x86_64/kernel-core-6.4.3-1.fboss.el9.x86_64.rpm
    out/x86_64/kernel-devel-6.4.3-1.fboss.el9.x86_64.rpm
    out/BUILD/linux-6.4.3/kernel/config_data.gz
    out/SRPMS/kernel-6.4.3-1.fboss.el9.src.rpm
    out/kernel-6.4.3.rpms.tar.gz
    out/kernel-6.4.3-1.fboss.el9.src.rpm
    out/RPMS/x86_64/kernel-modules-6.4.3-1.fboss.el9.x86_64.rpm
    out/RPMS/x86_64/kernel-headers-6.4.3-1.fboss.el9.x86_64.rpm
    out/RPMS/x86_64/kernel-core-6.4.3-1.fboss.el9.x86_64.rpm
    out/RPMS/x86_64/kernel-devel-6.4.3-1.fboss.el9.x86_64.rpm
    # ls fboss-image/kernel/dist/build-6.4.3/out/
    kernel-6.4.3-1.fboss.el9.src.rpm  kernel-core-6.4.3-1.fboss.el9.x86_64.rpm   kernel-headers-6.4.3-1.fboss.el9.x86_64.rpm
    kernel-6.4.3.rpms.tar.gz          kernel-devel-6.4.3-1.fboss.el9.x86_64.rpm  kernel-modules-6.4.3-1.fboss.el9.x86_64.rpm
@raghav-nexthop
[Nexthop] CLI Skeleton for FBOSS Image Builder
3a4da29
@meta-cla meta-cla bot added the CLA Signed label Jan 9, 2026
@raghav-nexthop
[Nexthop] Integrate Distro CLI unit tests into CMake build system
613ae64 
Add CMake configuration and CI workflow for FBOSS Image Builder:
- CMake test configuration for distro_cli unit tests
- GitHub Actions workflow for automated testing
- README documentation for the distro_cli tool

Test Plan:
- CMake configuration tested with pytest integration
- CI workflow validates on pull requests
@raghav-nexthop
[Nexthop] Core Infrastructure for FBOSS Image Builder
315c596 
Add foundational infrastructure for distro_cli:
- Custom exception classes for error handling
- Shared constants for Docker and build configuration
- Path resolution utilities for locating components
- ImageManifest class for build configuration parsing
- Unit tests for ImageManifest with test data

Test Plan:
- All unit tests pass (manifest_test.py)
- Pre-commit checks pass
@raghav-nexthop raghav-nexthop force-pushed the raghav.distro-cli-core branch from 8788a05 to 315c596 Compare January 9, 2026 04:28
This was referenced Jan 9, 2026
Closed
Closed
raghav-nexthop added a commit to nexthop-ai/fboss that referenced this pull request Jan 9, 2026
@raghav-nexthop
[Nexthop] Artifact Handling for FBOSS Image Builder
f5b5c42 
Add artifact storage and caching system:
- ArtifactStore class for managing build artifacts with file caching
- Support for metadata and data file separation
- Cache evaluation with caller-provided functions
- Unit tests for artifact operations

Dependencies: Uses Docker infrastructure from PR facebook#793

Test Plan:
- All unit tests pass (artifact_test.py)
- Pre-commit checks pass
@raghav-nexthop
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raghav-nexthop commented Jan 9, 2026

New PR will be created.

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