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Conditionally build Python-dependent Lyrical libraries across Pythons 3.12-3.14 - #193
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Ok I think we have all the building blocks for this now @EzraBrooks :) |
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With several Python versions pinned (lyrical, #193), a recipe with Python content makes one build per version, and the estimate counted recipes, not builds: #193's linux-64 run had 3474 builds where the estimate said 2487 packages. build_timings.variant_builds counts each recipe's builds from the multi-valued variant keys its build/host requirements name without a version (zipped keys as one axis, conditions evaluated for a native build), from the work dir's conda_build_config.yaml. ci_estimate counts builds, and a cached build per variant (the cache holds each variant's package). build-ci records a recipe's time per build (each variant's span, averaged), and vinca_timings multiplies it by the recipe's builds for packing the jobs. check_dependency_compat: variant_values and zip_groups; variant_pins now uses variant_values (same output, checked on all distros/platforms). Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
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is it time to re-run CI here? |
This was referenced Nov 10, 2026
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I'm investigating the failure |
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Claude suspects a race condition in build parallelism in rattler-build. Seems suspicious, but I'll chase that down. If that's the case then we might be able to just get away with a cached re-run here. |
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Ah it is indeed prefix-dev/rattler-build#2931 which @Tobias-Fischer already found |
…d#2931 A build or test waited for any variant of a dependency, not the one it can install: e.g. a Python 3.13 test started once the 3.12 package it needs was built, and failed to solve. The pre-releases (built from main, for linux-64, osx-arm64 and win-64; built for glibc 2.28) from prefix.dev's rattler-build-pre-release channel, and the same commit built from git on osx-64 and linux-aarch64. patchelf, which only conda-forge's package depends on, is added on Linux. Locked with pixi 0.81.0, the workflows' version: the source packages' identity differs between pixi versions.
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Use the improved "conditional Python dependency" support from
to build Lyrical Python packages for Pythons 3.12, 3.13, and 3.14 while not unnecessarily rebuilding non-Python dependencies.