anchor.diff:         -X ${t}.GoVersion=${stdenv.lib.getVersion go}
     '';
   
  +  postBuild = ''
  +    $NIX_BUILD_TOP/go/bin/artifacts
  +  '';
  +
  +  postInstall = ''
  +    rm $bin/bin/artifacts
  +    mkdir -p $bin/share/man/man1 $bin/etc/bash_completion.d
  +    cp -v amtool*.1 $bin/share/man/man1
  +    cp -v amtool_completion.sh $bin/etc/bash_completion.d
  +  '';
  +
     meta = with stdenv.lib; {
       description = "Alert dispatcher for the Prometheus monitoring system";
       homepage = https://github.com/prometheus/alertmanager;
  
positive.code: 
  buildGoPackage rec {
    name = "alertmanager-${version}";
    version = "0.5.1";
    rev = "v${version}";
  
    goPackagePath = "github.com/prometheus/alertmanager";
  
negative.code:     inherit rev;
      owner = "prometheus";
      repo = "alertmanager";
      sha256 = "04969hqig0llfkvk3b0yqrywcxm6rgd7ph6nn5rx8pnq21i77sqm";
    };
  
    # Tests exist, but seem to clash with the firewall.
  