anchor.diff:  , gobject-introspection
   , vala
   , python3
  +, gi-docgen
   , libxml2
   , gnutls
   , gperf
  
positive.code:     pkg-config
      vala
      python3
    ];
  
    buildInputs = [
  
negative.code:     patchShebangs src/box_drawing_generate.sh
      patchShebangs src/parser-seq.py
      patchShebangs src/modes.py
    '';
  
    postFixup = ''
      # Cannot be in postInstall, otherwise _multioutDocs hook in preFixup will move right back.
      moveToOutput "share/doc" "$devdoc"
    '';
  
    passthru = {
  