anchor.diff: -{ lib, fetchFromGitHub, buildGoPackage, btrfs-progs, go-md2man, utillinux }:
  +{ lib, fetchFromGitHub, buildGoPackage, btrfs-progs, go-md2man, installShellFiles, utillinux }:
   
   with lib;
   
  
positive.code:     done
  
      make man
      manRoot="$man/share/man"
      mkdir -p "$manRoot"
      for manFile in man/*; do
        manName="$(basename "$manFile")" # "docker-build.1"
        number="$(echo $manName | rev | cut -d'.' -f1 | rev)"
        mkdir -p "$manRoot/man$number"
        gzip -c "$manFile" > "$manRoot/man$number/$manName.gz"
      done
    '';
  
    meta = {
  
negative.code:   goPackagePath = "github.com/containerd/containerd";
    outputs = [ "out" "man" ];
  
    nativeBuildInputs = [ go-md2man installShellFiles utillinux ];
  
    buildInputs = [ btrfs-progs ];
  
  