anchor.diff:  
   with rustPlatform;
   
  -let
  -  # check for updates
  -  zoneinfo_compiled = fetchFromGitHub {
  -    owner = "rust-datetime";
  -    repo = "zoneinfo-compiled";
  -    rev = "f56921ea5e9f7cf065b1480ff270a1757c1f742f";
  -    sha256 = "1xmw7c5f5n45lkxnyxp4llfv1bnqhc876w98165ccdbbiylfkw26";
  -  };
  -  cargoPatch = ''
  -    # use non-git dependencies
  -    patch Cargo.toml <<EOF
  -    46c46
  -    < git = "https://github.com/rust-datetime/zoneinfo-compiled.git"
  -    ---
  -    > path = "${zoneinfo_compiled}"
  -    EOF
  -  '';
  -in buildRustPackage rec {
  +buildRustPackage rec {
     name = "exa-${version}";
  -  version = "0.7.0";
  +  version = "0.8.0";
   
  -  depsSha256 = "0j320hhf2vqaha137pjj4pyiw6d3p5h3nhy3pl9vna1g5mnl1sn7";
  +  depsSha256 = "0yz41prkjs5rmvdhr9k58a52l7hvwy5mfg8rcpsq4ybgf601lja2";
   
     src = fetchFromGitHub {
       owner = "ogham";
       repo = "exa";
       rev = "v${version}";
  -    sha256 = "0i9psgna2wwv9qyw9cif4qznqiyi16vl763hpm2yr195aj700339";
  +    sha256 = "0jy11a3xfnfnmyw1kjmv4ffavhijs8c940kw24vafklnacx5n88m";
     };
   
     nativeBuildInputs = [ cmake pkgconfig perl ];
  
positive.code:       for a directory, or recursing into directories with a tree view. exa is
        written in Rust, so it’s small, fast, and portable.
      '';
      homepage = http://the.exa.website;
      license = licenses.mit;
      maintainer = [ maintainers.ehegnes ];
    };
  
negative.code: 
    # Some tests fail, but Travis ensures a proper build
    doCheck = false;
  
    meta = with stdenv.lib; {
      description = "Replacement for 'ls' written in Rust";
  