Hi Gábor, > Nix had this issue, it seems they have a python 3.5 solution, which > should be easy to adopt: https://github.com/NixOS/nixpkgs/issues/22570. > WDYT?
Here’s the patch for Nix: https://patch-diff.githubusercontent.com/raw/NixOS/nixpkgs/pull/22585.diff Here are the relevant changes to the Python packages: * Python 3.4 substituteInPlace "Lib/py_compile.py" --replace "source_stats['mtime']" "(1 if 'DETERMINISTIC_BUILD' in os.environ else source_stats['mtime'])" substituteInPlace "Lib/importlib/_bootstrap.py" --replace "source_mtime = int(source_stats['mtime'])" "source_mtime = 1" * Python 3.5 substituteInPlace "Lib/py_compile.py" --replace "source_stats['mtime']" "(1 if 'DETERMINISTIC_BUILD' in os.environ else source_stats['mtime'])" substituteInPlace "Lib/importlib/_bootstrap_external.py" --replace "source_mtime = int(st['mtime'])" "source_mtime = 1" * Python 3.6 substituteInPlace "Lib/py_compile.py" --replace "source_stats['mtime']" "(1 if 'DETERMINISTIC_BUILD' in os.environ else source_stats['mtime'])" substituteInPlace "Lib/importlib/_bootstrap_external.py" --replace "source_mtime = int(st['mtime'])" "source_mtime = 1" For all packages they set these environment variables: - set PYTHONHASHSEED=0 (for hashes of str, bytes and datetime objects) - set DETERMINISTIC_BUILD; for conditional patching of the timestamp for package builds. The timestamp is not patched in ad-hoc environments, because that would mess with Python’s ability to determine whether to compile source files. They also rebuild all bytecode (with the exception of lib2to3 because it is Python 2 code) three times, once for each optimization level. --8<---------------cut here---------------start------------->8--- + # Determinism: rebuild all bytecode + # We exclude lib2to3 because that's Python 2 code which fails + # We rebuild three times, once for each optimization level + find $out -name "*.py" | $out/bin/python -m compileall -q -f -x "lib2to3" -i - + find $out -name "*.py" | $out/bin/python -O -m compileall -q -f -x "lib2to3" -i - + find $out -name "*.py" | $out/bin/python -OO -m compileall -q -f -x "lib2to3" -i - --8<---------------cut here---------------end--------------->8--- -- Ricardo GPG: BCA6 89B6 3655 3801 C3C6 2150 197A 5888 235F ACAC https://elephly.net
