feat(build): BUILD_PROFILE=dev env var for fast local iteration#8
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…tem 9) Mirrors fbuild's FBUILD_BUILD_RELEASE=1 opt-in pattern but inverted: release is the default (CI / release wheels are the dominant path through ci/build_wheel.py and must ship optimized binaries), and `BUILD_PROFILE=dev` (or `=debug`) opts into the dev profile for local iteration. Combined with the dev-profile knobs from PR #3 (`[profile.dev.package."*"] opt-level = 3` + rust-lld linker), this is the biggest single unlock for the Rust-edit → wheel round trip on the local dev loop. What changes when BUILD_PROFILE=dev: - cargo invocation drops `--release` - maturin invocation drops `--release` - cache-skip + filesystem-search probe `target/debug/` instead of `target/release/` Refs #2 (item 9). Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
This was referenced Jun 22, 2026
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Summary
Add a
BUILD_PROFILE=dev(or=debug) env-var opt-in toci/build_wheel.pythat switches cargo + maturin off--release. Default stays release (CI / release wheels dominate this path). Mirrors fbuild'sFBUILD_BUILD_RELEASE=1pattern but inverted.Combined with PR #3's
[profile.dev.package."*"] opt-level = 3+ rust-lld linker, this is the biggest single unlock for the Rust-edit → wheel round trip in the local dev loop.Test plan
_use_release_profile()returns True by default, False onBUILD_PROFILE=dev/DEV/debug/DEBUG._profile_subdir()follows.build_cli_binary()cargo invocation conditionally inserts--release.build_python_artifacts()maturin invocation conditionally inserts--release.Refs #2 — item (9).
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