anchor.diff:  
   python3Packages.buildPythonApplication rec {
     pname = "stgit";
  -  version = "1.1";
  +  version = "1.3";
   
     src = fetchFromGitHub {
       owner = "stacked-git";
       repo = "stgit";
       rev = "v${version}";
  -    sha256 = "sha256-gfPf1yRmx1Mn1TyCBWmjQJBgXLlZrDcew32C9o6uNYk=";
  +    sha256 = "0wa3ba7afnbb1h08n9xr0cqsg93rx0qd9jv8a34mmpp0lpijmjw6";
     };
   
  -  nativeBuildInputs = [ installShellFiles asciidoc xmlto docbook_xsl ];
  +  nativeBuildInputs = [ installShellFiles asciidoc xmlto docbook_xsl docbook_xml_dtd_45 ];
   
     format = "other";
   
  
positive.code:   checkTarget = "test";
    checkFlags = [ "PERL_PATH=${perl}/bin/perl" ];
  
    installTargets = [ "install" "install-doc" ];
    postInstall = ''
      installShellCompletion --cmd stg \
        --fish $out/share/stgit/completion/stg.fish \
        --bash $out/share/stgit/completion/stgit.bash \
        --zsh $out/share/stgit/completion/stgit.zsh
      '';
  
    meta = with lib; {
      description = "A patch manager implemented on top of Git";
  
negative.code: , python3Packages
  , asciidoc
  , docbook_xsl
  , docbook_xml_dtd_45
  , git
  , perl
  , xmlto
  