fix(toolchains): add releases.astral.sh mirror for python-build-standalone#3761
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rickeylev merged 1 commit intobazel-contrib:mainfrom May 8, 2026
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…alone Currently, python-build-standalone runtimes are only downloaded from github.com. If github.com is down or experiencing 5xx errors, builds will fail because the runtimes cannot be fetched. To fix this, add releases.astral.sh as a secondary fallback mirror URL. If the requested base_url starts with the standard or legacy github.com release prefix, we append the equivalent releases.astral.sh URL to rendered_urls.
rickeylev
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This pull request implements a mirroring mechanism for Python build standalone releases by adding releases.astral.sh as a secondary download source when GitHub or legacy GitHub URLs are used. The changes include defining new URL prefixes, updating get_release_info to handle multiple base URLs, and adding unit tests to verify the mirroring logic. Review feedback suggests refactoring the prefix definitions to eliminate string duplication and simplifying the logic for appending mirror URLs by iterating over the known prefixes.
aignas
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May 8, 2026
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Currently, python-build-standalone runtimes are only downloaded from
github.com. If github.com is down or experiencing 5xx errors, builds
will fail because the runtimes cannot be fetched.
To fix this, add releases.astral.sh as a secondary fallback mirror URL.
If the requested base_url starts with the standard or legacy github.com
release prefix, we append the equivalent releases.astral.sh URL to
rendered_urls.