anchor.diff:  { stdenv
   , lib
   , fetchurl
  +, fetchpatch
   , pkg-config
   , meson
   , ninja
   , glib
   , gnome
  -, nspr
   , gettext
   , gobject-introspection
   , vala
   , sqlite
  -, libxml2
   , dbus-glib
  -, libsoup
  -, nss
   , dbus
   , libgee
   , evolution-data-server-gtk4
  -, libsecret
  -, db
   , python3
   , readline
  -, gtk3
   , gtk-doc
   , docbook-xsl-nons
   , docbook_xml_dtd_43
  
positive.code:     sha256 = "D/+KiWMwzYKu5FmDJPflQciE0DN1NiEnI7S+s4x1kIY=";
    };
  
    nativeBuildInputs = [
      gettext
      gobject-introspection
      gtk3
      gtk-doc
      docbook-xsl-nons
      docbook_xml_dtd_43
      meson
      ninja
      pkg-config
      python3
      vala
    ];
  
    buildInputs = [
      db
      dbus-glib
      evolution-data-server-gtk4
      libsecret
      libsoup
      libxml2
      nspr
      nss
      readline
    ] ++ lib.optional telepathySupport telepathy-glib;
  
    propagatedBuildInputs = [
      glib
  
negative.code:     runHook postCheck
    '';
  
    postPatch = lib.optionalString telepathySupport ''
      patchShebangs tests/tools/manager-file.py
    '';
  
  