anchor.diff:      (fetchpatch {
         url = https://github.com/hughsie/fwupd/commit/bd6082574989e4f48b66c7270bb408d439b77a06.patch;
         sha256 = "17pixyizkmn6wlsjmr1wwya17ivn770hdv9mp769vifxinya8w9y";
  +    })
  +    # drop docbook2man
  +    (fetchpatch {
  +      url = https://github.com/hughsie/fwupd/commit/2c43d3e6e65868b66a9a64a76123697e259ec7c2.patch;
  +      sha256 = "0vjv7jnai0g96frlipk2sc59pj3mhq9di01hajycjv7y5v6qqrmc";
       })
       # https://github.com/hughsie/fwupd/issues/405
       (fetchpatch {
  
positive.code:   '';
  
    mesonFlags = [
      "-Dman=false"
      "-Dplugin_dummy=true"
      "-Dbootdir=/boot"
      "-Dudevdir=lib/udev"
  
negative.code:     sha256 = "1n4d6fw3ffg051072hbxn106s52x2wlh5dh2kxwdfjsb5kh03ra3";
    };
  
    outputs = [ "out" "devdoc" "man" "installedTests" ];
  
    nativeBuildInputs = [
      meson ninja gtk_doc pkgconfig gobjectIntrospection intltool glibcLocales shared_mime_info
      valgrind gcab docbook_xml_dtd_43 docbook_xsl help2man libxslt python wrapGAppsHook
    ];
    buildInputs = [
      polkit appstream-glib gusb sqlite libarchive libsoup elfutils libsmbios fwupdate libyaml
  