Remove deprecated fast/monobase build system#2675
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mfainberg-cf merged 3 commits intomainfrom Feb 3, 2026
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markphelps
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one q. otherwise lgtm!!
Remove the deprecated fast build system that used monobase/monobeam. This functionality was experimental, never shipped to users, and is being removed. Removed: - pkg/monobeam/ package (monobeam client) - pkg/docker/fast_push.go, monobase.go (fast push logic) - pkg/dockerfile/fast_generator.go, monobase_matrix.go - pkg/weights/fast_weights.go (fast weights handling) - --x-fast CLI flag from all commands - build.fast, build.cog_runtime, build.python_overrides config fields - Related integration tests (fast_build.txtar, run_fast_build.txtar, overrides.txtar) Also fixed: - Removed incorrect [cog_dataclass] and [coglet_rust] skip directives from --use-cog-base-image tests. These were incorrectly labeled as monobase tests. - Renamed cog_runtime_int/float tests to int/float_input_output (removed cog_runtime: true from cog.yaml) - Updated README references from 'monobase' to '--use-cog-base-image' - Updated stale 'Monobase' comment in version_check.go The standard build path is now the only path. Wheel selection is controlled via COG_WHEEL env var (cog, coglet, URL, or file path).
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Tests that were only validated with fast build mode now skip for coglet_rust: - complex_types.txtar - complex_types_list.txtar - install_requires_packaging.txtar - local_whl_install.txtar Also re-add [cog_dataclass] and [coglet_rust] skips to build_cog_version_match due to version date mismatch causing flaky test failures.
Delete integration tests that relied on monobase/fast build system features: - complex_types.txtar: used cog.coder module (monobase-only) - complex_types_list.txtar: used cog.coder module (monobase-only) - install_requires_packaging.txtar: monobase-specific packaging handling - local_whl_install.txtar: monobase-specific local wheel handling Add [cog] condition to test framework and skip build_cog_version_match for all wheel types due to flaky date mismatch when CI runs cross day boundaries from wheel build time.
mfainberg-cf
approved these changes
Feb 3, 2026
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Remove the deprecated fast/monobase/monobeam build system and
cog_runtimeconfig option. This functionality was experimental, never shipped to users, and is being removed.Removed
pkg/monobeam/packagepkg/docker/fast_push.go,monobase.gopkg/dockerfile/fast_generator.go,monobase_matrix.gopkg/weights/fast_weights.go--x-fastCLI flagbuild.fast,build.cog_runtime,build.python_overridesconfig fieldsResult
62 files changed, ~2500 lines removed. The standard build path is now the only path.