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Title: Add code coverage reporting to PR CI by Copilot · Pull Request #6518 · RustPython/RustPython · GitHub

Open Graph Title: Add code coverage reporting to PR CI by Copilot · Pull Request #6518 · RustPython/RustPython

X Title: Add code coverage reporting to PR CI by Copilot · Pull Request #6518 · RustPython/RustPython

Description: Adds code coverage collection to PR CI workflow using stable Rust's source-based coverage (available since 1.60.0). Coverage reports are uploaded to Codecov on every PR. Implementation New codecov job in .github/workflows/ci.yaml runs Rust test coverage only Uses cargo-llvm-cov with stable toolchain and rust-cache Set fail_ci_if_error: false to avoid blocking PRs on Codecov service issues 30-minute timeout, respects skip:ci label Design The PR job collects only Rust test coverage to minimize build time impact. The existing scheduled cron job continues to provide comprehensive coverage including Python snippets and full test suite. Original prompt This section details on the original issue you should resolve Add code coverage report to CI https://blog.rust-lang.org/2022/04/07/Rust-1.60.0.html#source-based-code-coverage Comments on the Issue (you are @copilot in this section) @coolreader18 Yeah I saw that; that's exciting! @youknowone I was forgetting we had one in cron. Can we make report using codecov? https://about.codecov.io/language/rust/ @youknowone #3649 made the first report: https://app.codecov.io/gh/RustPython/RustPython @youknowone I looked at it and I like it. If it doesn't increase build time that much (because now we can do it with stable compiler), adding it to PR CI will be the final step. Fixes #3588 💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.

Open Graph Description: Adds code coverage collection to PR CI workflow using stable Rust's source-based coverage (available since 1.60.0). Coverage reports are uploaded to Codecov on every PR. Implementation New cod...

X Description: Adds code coverage collection to PR CI workflow using stable Rust's source-based coverage (available since 1.60.0). Coverage reports are uploaded to Codecov on every PR. Implementation New...

Opengraph URL: https://github.com/RustPython/RustPython/pull/6518

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41d54f5 Initial plan Copilot Dec 25, 2025 https://patch-diff.githubusercontent.com/RustPython/RustPython/pull/6518/commits/41d54f5572667151ea459773658bdf5f6b7acec7
be7781e Add code coverage job to PR CI workflow Copilot Dec 25, 2025 https://patch-diff.githubusercontent.com/RustPython/RustPython/pull/6518/commits/be7781ec5793da9c2e1c46ce97bfc0f6b2b3b16c
6817d2a llvm-cov youknowone Dec 27, 2025 https://patch-diff.githubusercontent.com/RustPython/RustPython/pull/6518/commits/6817d2ab7686f4e52dea07fea1abe14ee1e109b4
36bafe0 Use cargo llvm-cov build with explicit target-dir youknowone Jan 9, 2026 https://patch-diff.githubusercontent.com/RustPython/RustPython/pull/6518/commits/36bafe0f5e037b3b87d58a2e59df032c60256778
9fc0960 Fix: cargo llvm-cov clean doesn't support --target-dir youknowone Jan 9, 2026 https://patch-diff.githubusercontent.com/RustPython/RustPython/pull/6518/commits/9fc09606cf6ed72b70bcdb2897b3319ffe20ecc5
cecb319 Revert to cargo build with env vars for coverage youknowone Jan 9, 2026 https://patch-diff.githubusercontent.com/RustPython/RustPython/pull/6518/commits/cecb31943f73e476b5b062d8a975573f5fefe767
071ce6f Fix GITHUB_ENV multiline value handling for coverage youknowone Jan 9, 2026 https://patch-diff.githubusercontent.com/RustPython/RustPython/pull/6518/commits/071ce6fb840b303a1ba49680023b06e4b1781f95
57888b2 Fix PowerShell regex matching for coverage env vars youknowone Jan 9, 2026 https://patch-diff.githubusercontent.com/RustPython/RustPython/pull/6518/commits/57888b20876d4b6614bd66366a0114335b708d2a
a350b56 Fix: Add --export-prefix to Windows cargo llvm-cov show-env youknowone Jan 9, 2026 https://patch-diff.githubusercontent.com/RustPython/RustPython/pull/6518/commits/a350b56f923b0f910aa136f96fc1b1cd7e25993b
63e63e4 Fix Unix coverage env: use eval instead of source <() youknowone Jan 10, 2026 https://patch-diff.githubusercontent.com/RustPython/RustPython/pull/6518/commits/63e63e4e7fd518b3f61850d6142c132aad1d3ac7
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