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Enable os.memfd_create through runtime weak linking - #1164
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We should definitely try to upstream any weak linking implementations |
zanieb
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Rebased on top of merged #1163 |
jjhelmus
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Use the pattern from #1164 to make `os.copy_file_range` available at runtime when the host glibc version provides the function.
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Use the uv-managed Python environment for YARF and Mir again. The upstream python-build-standalone fix for os.memfd_create makes the system-Python workaround unnecessary: astral-sh/python-build-standalone#1164 Keep the project on Python 3.12, as required for Noble while pywayland does not provide a Python 3.14 wheel. Run the legacy docformatter hook with Python 3.12 because its untokenize dependency is not compatible with Python 3.14. Keep the system-Python virtual environment used by simple-counter documented as a PyGObject requirement, rather than a Mir requirement. Signed-off-by: Paolo Gentili <paolo.gentili@canonical.com>
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Use the uv-managed Python environment for YARF and Mir again. The upstream python-build-standalone fix for os.memfd_create makes the system-Python workaround unnecessary: astral-sh/python-build-standalone#1164 Keep the project on Python 3.12, as required for Noble while pywayland does not provide a Python 3.14 wheel. Run the legacy docformatter hook with Python 3.12 because its untokenize dependency is not compatible with Python 3.14. Keep the system-Python virtual environment used by simple-counter documented as a PyGObject requirement, rather than a Mir requirement. Signed-off-by: Paolo Gentili <paolo.gentili@canonical.com>
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Always build CPython with
os.memfd_createbut remove the Python function from the namespace at runtime when glibc does not provide the an implementation.This is accomplished using a weak
memfd_createsymbol which is evaluated at runtime.This requires the modern kernel UAPI headers from #1163 to define the
MFD_*constants.