anchor.diff:    checkPhase = ''
       runHook preCheck
       NO_AT_BRIDGE=1 \
  +    XDG_DATA_DIRS=${folks}/share/gsettings-schemas/${folks.name} \
       xvfb-run -s '-screen 0 800x600x24' dbus-run-session \
         --config-file=${dbus.daemon}/share/dbus-1/session.conf \
         meson test --print-errorlogs
  
positive.code: , evolution-data-server
  , folks
  , desktop-file-utils
  , libpeas
  , dbus
  , vala
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "calls";
    version = "0.3.1";
  
    src = fetchFromGitLab {
      domain = "source.puri.sm";
      owner = "Librem5";
      repo = pname;
      rev = "v${version}";
      sha256 = "0igap5ynq269xqaky6fqhdg2dpsvxa008z953ywa4s5b5g5dk3dd";
    };
  
    nativeBuildInputs = [
  