anchor.diff:  
     buildPhase = ''
       patchShebangs .
  -    make binary-local
  +    make bin/skopeo docs
     '';
   
     installPhase = ''
  -    make install-binary PREFIX=$out
  -    make install-docs MANINSTALLDIR="$man/share/man"
  +    install -Dm755 bin/skopeo -t $out/bin
  +    installManPage docs/*.[1-9]
       installShellCompletion --bash completions/bash/skopeo
     '';
   
  
positive.code: , installShellFiles
  , makeWrapper
  , fuse-overlayfs
  , nixosTests
  }:
  
  buildGoModule rec {
    pname = "skopeo";
    version = "1.1.1";
  
    src = fetchFromGitHub {
      rev = "v${version}";
      owner = "containers";
      repo = "skopeo";
      sha256 = "0wkpw8fizxjpfypflp7rs1q128dg4hadwzdvn8k41h7f8cbcb39x";
    };
  
    outputs = [ "out" "man" ];
  
negative.code: { stdenv
  , buildGoModule
  , fetchFromGitHub
  , gpgme
  , lvm2
  , btrfs-progs
  