Make less known wayland compositors usable (#32285)

* bemenu: init at 2017-02-14

* velox: 2015-11-03 -> 2017-07-04

* orbment, velox: don't expose subprojects

the development of orbment and velox got stuck
their subprojects (bemenu, dmenu-wayland, st-wayland) don't work correctly outside of parent projects
so hide them to not confuse people
swc and wld libraries are unpopular and unlike wlc are not used by anything except velox

* pythonPackages.pydbus: init at 0.6.0

* way-cooler: 0.5.2 -> 0.6.2

* nixos/way-cooler: add module

* dconf module: use for wayland

non-invasive approach for #31293
see discussion at #32210

* sway: embed LD_LIBRARY_PATH for #32755

* way-cooler: switch from buildRustPackage to buildRustCrate #31150

pkgs/development/python-modules/pydbus/default.nix

@@ -0,0 +1,21 @@
+{ lib, buildPythonPackage, fetchPypi, pygobject3 }:
+
+buildPythonPackage rec {
+  pname = "pydbus";
+  version = "0.6.0";
+  name = "${pname}-${version}";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "0b0gipvz7vcfa9ddmwq2jrx16d4apb0hdnl5q4i3h8jlzwp1c1s2";
+  };
+
+  propagatedBuildInputs = [ pygobject3 ];
+
+  meta = {
+    homepage = https://github.com/LEW21/pydbus;
+    description = "Pythonic DBus library";
+    license = lib.licenses.lgpl2Plus;
+    maintainers = with lib.maintainers; [ gnidorah ];
+  };
+}