anchor.diff:  
   buildGoModule rec {
     pname = "containerd";
  -  version = "1.5.4";
  +  version = "1.5.5";
   
     outputs = [ "out" "man" ];
   
  
positive.code:     owner = "containerd";
      repo = "containerd";
      rev = "v${version}";
      sha256 = "sha256-VV1cxA8tDRiPDxKV8OGu3T7sgutmyL+VPNqTeFcVjJA=";
    };
  
    vendorSha256 = null;
  
negative.code:   BUILDTAGS = lib.optionals (btrfs-progs == null) [ "no_btrfs" ];
  
    buildPhase = ''
      runHook preBuild
      patchShebangs .
      make binaries man $buildFlags
      runHook postBuild
    '';
  
    installPhase = ''
      runHook preInstall
      install -Dm555 bin/* -t $out/bin
      installManPage man/*.[1-9]
      installShellCompletion --bash contrib/autocomplete/ctr
      installShellCompletion --zsh --name _ctr contrib/autocomplete/zsh_autocomplete
      runHook postInstall
    '';
  
    passthru.tests = { inherit (nixosTests) docker; };
  