anchor.diff:  
   let
     pname = "victor-mono";
  -  version = "1.2.5";
  +  version = "1.2.7";
   in fetchFromGitHub rec {
     name = "${pname}-${version}";
   
  
positive.code:     unzip -j VictorMonoAll.zip \*.otf -d $out/share/fonts/opentype/${pname}
    '';
  
    sha256 = "0dj5h45qk6abggj6mgm19sb0a7q0v4x41f2zds1ab79yd22gbjns";
  
    meta = with lib; {
      description = "Free programming font with cursive italics and ligatures";
  
negative.code:   # Both methods produce the same file, but this way
    # we can safely reason about what version it is.
    postFetch = ''
      tar xvf $downloadedFile --strip-components=2 ${pname}-${version}/public/VictorMonoAll.zip
  
      mkdir -p $out/share/fonts/{true,open}type/${pname}
  
  