python3Packages.pymupdf: propagated mupdf-cxx in such a way that it won't be filtered out
Otherwise, we end up in this situation where this derivation works:
```nix
{ pkgs ? import ./. { } }:
pkgs.runCommand "driver" { buildInputs = [ pkgs.python3Packages.pymupdf ]; } ''
python -c 'import pymupdf;' > $out
''
```
... but this ostensibly identical derivation fails.
```nix
{ pkgs ? import ./. { } }:
pkgs.runCommand "driver" { buildInputs = [ pkgs.python3.withPackages (ps: [ ps.pymupdf ]; } ''
python -c 'import pymupdf;' > $out
''
```
What's happening is that the propagated input `mupdf-cxx` doesn't pass the filter check in `requiredPythonModules` as it does not have a Python module as defined in that function.
Now, it does.
Huge thanks to hexa who debugged this with me on Matrix.
Co-authored-by: Martin Weinelt <hexa@darmstadt.ccc.de>
nixpkgs
36354c77 - python3Packages.pymupdf: propagated mupdf-cxx in such a way that it won't be filtered out
