anchor.diff:  , libtasn1
   , gtk3
   , pango
  +, libsecret
  +, openssh
  +, systemd
   , gobject-introspection
   , makeWrapper
   , libxslt
  
positive.code:     libgcrypt
      libtasn1
      pango
    ];
  
    propagatedBuildInputs = [
  
negative.code: 
    mesonFlags = [
      "-Dgtk_doc=false"
      # We are still using ssh-agent from gnome-keyring.
      # https://github.com/NixOS/nixpkgs/issues/140824
      "-Dssh_agent=false"
    ];
  
    doCheck = false; # fails 21 out of 603 tests, needs dbus daemon
  
    PKG_CONFIG_SYSTEMD_SYSTEMDUSERUNITDIR = "${placeholder "out"}/lib/systemd/user";
  
    postPatch = ''
      patchShebangs build/ gcr/fixtures/
  
      chmod +x meson_post_install.py
      patchShebangs meson_post_install.py
    '';
  
    preFixup = ''
      wrapProgram "$out/bin/gcr-viewer" \
  