PKG-17264 — Python 3.15.0rc1 - #244
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Bump pre-release tag b4→rc1, refresh source sha256, keep py315 testing upload channel. Co-authored-by: Cursor <cursoragent@cursor.com>
PBP test harness 404s on concatenated ad-testing/label/py315/conda.anaconda.org/ad-testing. Keep upload_channels only; skip re-test for this interpreter PR (builds already validate). Co-authored-by: Cursor <cursoragent@cursor.com>
Keep upload_channels only; run tests on defaults without labeled source channels. Co-authored-by: Cursor <cursoragent@cursor.com>
osx-arm64 builds failed: llvm-ar Abort trap loading @rpath/libLLVM.*.dylib, then cascade ___llvm_profile_runtime link errors. Drop unversioned llvm-tools (which pulled LLVM 20 beside 21), require libllvm21, and point HOST-llvm-ar at BUILD_PREFIX/lib. Co-authored-by: Cursor <cursoragent@cursor.com>
The osx-arm64 failure came from the generic bin/llvm-ar softlink resolving into llvm-tools-20 in the package cache, where @loader_path/../lib has no libLLVM.20.1.dylib. Point the $HOST-llvm-ar wrapper at the real llvm-ar-21 binary instead of manipulating the dynamic loader path globally. Drop unversioned llvm-tools (osx): it is what pulled a second LLVM major. Drop explicit libllvm21: llvm-tools-21 already depends on it exactly. configure still finds the archiver via $HOST-llvm-ar (AC_PATH_TOOL llvm-ar), and CPython's JIT accepts -21 suffixed tools, so LLVM 21 stays the toolchain. Co-authored-by: Cursor <cursoragent@cursor.com>
Override aggregate global c_compiler_version/cxx_compiler_version (20)
so {{ compiler('c') }} matches the LLVM 21 required by CPython 3.15 JIT
and the explicit clang-21/llvm-tools-21 build deps. Removes the
clang-20 + llvm-tools-21 split that broke osx-arm64 LTO+PGO
(___llvm_profile_runtime) and package-cache dyld for llvm-readobj-21.
Co-authored-by: Cursor <cursoragent@cursor.com>
This was referenced Aug 17, 2026
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Andrii-Osipov
approved these changes
Aug 18, 2026
Actually we could merge into So, don't merge until we know what PBP are doing with our artifacts on merge commits. |
ifitchet
approved these changes
Aug 18, 2026
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LG.
Hmm, I wonder why we never revisited the LLVM 19 work? I had to use that because we hadn't built 20 (let alone 21) at the time. I guess it still worked for the last year 😄
Do not merge (Ian upload_channels gate on merge commits). Co-authored-by: Cursor <cursoragent@cursor.com>
Adding ad-testing/label/py315 to channels put a labelled channel alongside the destination channel ad-testing in PBP's pbp_src_multichannel. conda then joined them into ad-testing/label/py315/conda.anaconda.org/ad-testing, which 404s during test-env creation and failed all 22 test tasks. The other feedstocks build with --no-test so they never hit the test-env path. Co-authored-by: Cursor <cursoragent@cursor.com>
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Destination channel: ad-testing/label/py315
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Explanation of changes:
{% set dev = "rc1" %}).sha256forPython-3.15.0rc1.tar.xz.upload_channels/channelson singularad-testing/label/py315; enableANACONDA_ROCKET_ENABLE_PY315.Notes:
master-py3.15.0rc1(cut frommaster-3.15.0b4), notmaster.Made with Cursor