ci: do not force python 3.11.9 over the image interpreter - #3
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rocker/ml ships a complete /opt/venv on Python 3.14. Requesting 3.11.9 makes setup-python install a second interpreter that shadows it, discarding every preinstalled package and forcing pip to rebuild the stack -- which is how the pinned duckdb ended up compiling from source and hitting the memory limit.
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python-version: '3.11.9'from thesetup-pythonstep.On the
arc-runner-espm157runner this input is actively harmful. The job runs inrocker/ml, which ships a complete/opt/venv— Python 3.14.4 with pandas, duckdb 1.5.5, ibis 12.0.0, plotnine, pyarrow and the rest already installed. Asking for 3.11.9 makessetup-pythondownload and prepend a separate interpreter, which shadows/opt/venvand throws away every preinstalled package. Everything inrequirements.txtthen has to be rebuilt from scratch against an interpreter the image was never built for.That is also how the
exit 137failures happened: against 3.14 the pinnedduckdb==1.3.2had no matching wheel (cp313is its newest tag), so pip compiled DuckDB from source until the job pod hit its memory limit and was SIGKILLed.With the input removed,
setup-pythonuses the interpreter already onPATH— the image's — andpip install -r requirements.txtresolves to "already satisfied" for the scientific stack, installing only the few small pure-Python test deps.No effect on the
ubuntu-latestfallback path for public forks, which picks up the hosted runner's default Python the same way.