anchor.diff:    postInstall = ''
       wrapProgram $bin/bin/fac \
         --prefix PATH : ${git}/bin
  +
  +    install -D ${fac_1} $out/share/man/man1/fac.1
     '';
   
     meta = with stdenv.lib; {
  
positive.code:     owner = "mkchoi212";
      repo = "fac";
      rev = "v${version}";
      sha256 = "1j5kip3l3p9qlly03pih905sdz3ncvpj7135jpnfhckbk1s5x9dc";
    };
  
    nativeBuildInputs = [ makeWrapper ];
  
negative.code: { stdenv, buildGoPackage, fetchFromGitHub, fetchurl, makeWrapper, git }:
  
  let
    # TODO: Remove this on next update, should be included
    fac_1 = fetchurl {
      url = https://raw.githubusercontent.com/mkchoi212/fac/0a500c2a2dba9017fe7c2a45f15c328755f561a6/doc/fac.1;
      sha256 = "1fsyx9i20ryhpihdpvs2z7vccl13b9bnh5hcdxn7bvqjz78mbqhw";
    };
  in buildGoPackage rec {
    name = "fac-${version}";
    version = "1.0.4";
  
    goPackagePath = "github.com/mkchoi212/fac";
  
  