anchor.diff:      lockfile
       paste
     ];
  +
     prePatch = ''
       # replace /bin/bash in compress.sh
       patchShebangs .
   
       # relax version constraints of some dependencies
       substituteInPlace setup.cfg \
  +      --replace "clize==4.1.1" "clize" \
         --replace "bleach==3.1.5" "bleach>=3.1.5,<4" \
         --replace "bottle==0.12.18" "bottle>=0.12.18,<1" \
         --replace "Paste==3.4.3" "Paste>=3.4.3,<4"
     '';
  +
     buildPhase = ''
       runHook preBuild
       doit build
  
positive.code:     python3Packages.pyscss
      nodePackages.uglify-js
    ];
    propagatedBuildInputs = with python3Packages; [
      appdirs
      beaker
  
negative.code:   # See https://github.com/NixOS/nixpkgs/pull/98734#discussion_r495823510
    doCheck = false;
  
    pythonImportsCheck = [ "zerobin" ];
  
    meta = with lib; {
      description = "A client side encrypted pastebin";
      homepage = "https://0bin.net/";
  