anchor.diff:      for i in *.bdf $src/hidpi/*.bdf; do
           name=$(basename $i .bdf)
           bdftopcf -o "$name.pcf" "$i"
  -        fonttosfnt -v -o "$name.otb" "$i" || true
  +        faketime -f "1970-01-01 00:00:01" fonttosfnt -v -o "$name.otb" "$i" || true
       done
     '';
   
  
positive.code:   };
  
    nativeBuildInputs =
      [ mkfontdir mkfontscale bdf2psf bdftopcf fonttosfnt ];
  
    buildPhase = ''
      # convert bdf fonts to psf
  
negative.code: 
    outputHashAlgo = "sha256";
    outputHashMode = "recursive";
    outputHash     = "028mq0j6w76isv4ycj1jzx7ih9d9cz5012np7f1pf3bvnvw3ajw2";
  
    meta = with stdenv.lib; {
      description = ''
  