anchor.diff:    flatpak-builder = callPackage ../development/tools/flatpak-builder { };
   
     fltrdr = callPackage ../tools/misc/fltrdr {
  -    stdenv = gcc8Stdenv;
       icu = icu63;
     };
   
  
positive.code:   gerbil = callPackage ../development/compilers/gerbil { stdenv = gccStdenv; };
    gerbil-unstable = callPackage ../development/compilers/gerbil/unstable.nix { stdenv = gccStdenv; };
  
    gccFun = callPackage ../development/compilers/gcc/8;
    gcc = gcc8;
    gcc-unwrapped = gcc.cc;
  
    gccStdenv = if stdenv.cc.isGNU then stdenv else stdenv.override {
  
negative.code: 
    fcitx-configtool = callPackage ../tools/inputmethods/fcitx/fcitx-configtool.nix { };
  
    fcppt = callPackage ../development/libraries/fcppt { };
  
    fcrackzip = callPackage ../tools/security/fcrackzip { };
  
  