anchor.diff:  , callPackage
   }:
   
  +let makeurl = { pname, year, version }: "https://download.qoppa.com/${pname}/v${year}/${
  +    builtins.replaceStrings [ "pdfstudio" "viewer" "." ] [ "PDFStudio" "Viewer" "_" ] "${pname}_v${version}"
  +  }_linux64.deb";
  +in
   {
     pdfstudio = callPackage ./common.nix rec {
       pname = program;
  
positive.code:       PDF Studio Viewer is an easy to use, full-featured PDF editing software. This is the free edition. For the standard/pro edition, see the package pdfstudio.
      '';
      src = fetchurl {
        url = "https://download.qoppa.com/${pname}/v${year}/PDFStudioViewer_v${
            builtins.replaceStrings [ "." ] [ "_" ] version
          }_linux64.deb";
        sha256 = "128k3fm8m8zdykx4s30g5m2zl7cgmvs4qinf1w525zh84v56agz6";
      };
    };
  
negative.code:       libgccjit #for libstdc++.so.6 and libgomp.so.1
      ];
      src = fetchurl {
        url = makeurl { inherit pname year version; };
        sha256 = "1188ll2qz58rr2slavqxisbz4q3fdzidpasb1p33926z0ym3rk45";
      };
    };
  