nixos/config: add slim module from nuschtos

Signed-off-by: unexplrd <unexplrd@linerds.us>

modules/nixos/config/misc/default.nix

@@ -0,0 +1,3 @@
+{
+  imports = [./slim.nix];
+}

modules/nixos/config/misc/slim.nix

@@ -0,0 +1,20 @@
+{
+  # taken from https://github.com/NuschtOS/nixos-modules/blob/main/modules/slim.nix
+  documentation = {
+    # html docs and info are not required, man pages are enough
+    doc.enable = false;
+    info.enable = false;
+  };
+
+  # environment.defaultPackages = lib.mkForce [];
+
+  # programs.thunderbird.package = pkgs.thunderbird.override {cfg.speechSynthesisSupport = false;};
+
+  # during testing only 550K-650K of the tmpfs where used
+  security.wrapperDirSize = "10M";
+
+  services = {
+    orca.enable = false; # requires speechd
+    speechd.enable = false; # voice files are big and fat
+  };
+}