swaylock: enable strictDeps and pull patch to fix cross

pkgs/applications/window-managers/sway/lock.nix

@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub
+{ lib, stdenv, fetchFromGitHub, fetchpatch
 , meson, ninja, pkg-config, scdoc, wayland-scanner
 , wayland, wayland-protocols, libxkbcommon, cairo, gdk-pixbuf, pam
 }:
@@ -14,6 +14,17 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-VVGgidmSQWKxZNx9Cd6z52apxpxVfmX3Ut/G9kzfDcY=";
   };
 
+  patches = [
+    # remove once when updating to 1.7
+    # https://github.com/swaywm/swaylock/pull/235
+    (fetchpatch {
+      url = "https://github.com/swaywm/swaylock/commit/5a1e6ad79aa7d79b32d36cda39400f3e889b8f8f.diff";
+      sha256 = "sha256-ZcZVImUzvng7sluC6q2B5UL8sVunLe4PIfc+tyw48RQ=";
+    })
+  ];
+
+  strictDeps = true;
+  depsBuildBuild = [ pkg-config ];
   nativeBuildInputs = [ meson ninja pkg-config scdoc wayland-scanner ];
   buildInputs = [ wayland wayland-protocols libxkbcommon cairo gdk-pixbuf pam ];