anchor.diff:        $out/bin/rbw gen-completions $shell > rbw.$shell
         installShellCompletion rbw.$shell
       done
  +  '' + ''
  +    cp bin/git-credential-rbw $out/bin
     '' + lib.optionalString withFzf ''
       cp bin/rbw-fzf $out/bin
     '' + lib.optionalString withRofi ''
       cp bin/rbw-rofi $out/bin
     '' + lib.optionalString withPass ''
       cp bin/pass-import $out/bin
  -  '' + lib.optionalString withGitCredential ''
  -    cp bin/git-credential-rbw $out/bin
     '';
   
     meta = with lib; {
  
positive.code: 
    buildInputs = lib.optionals stdenv.isDarwin [ Security libiconv ];
  
    postPatch = lib.optionalString withFzf ''
      patchShebangs bin/rbw-fzf
      substituteInPlace bin/rbw-fzf \
          --replace fzf ${fzf}/bin/fzf \
  
negative.code:   # pass-import
  , withPass ? false
  , pass
  }:
  
  rustPlatform.buildRustPackage rec {
  