filesystem: extract nixos module

hosts/snowhawk/configuration.nix

@@ -17,11 +17,10 @@
   # Set your time zone.
   time.timeZone = "America/Los_Angeles";
 
-  boot.tmp.useTmpfs = true;
-
   snowhawk = {
     wake-on-lan.enable = true;
     dwm.enable = true;
+    filesystem.enable = true;
     syncthing.enable = true;
     plymouth.enable = true;
     polkit.enable = true;
@@ -31,12 +30,8 @@
   # Enable CUPS to print documents.
   services.printing.enable = true;
 
-  services.envfs.enable = true;
-
   hardware.keyboard.uhk.enable = true;
 
-  programs.dconf.enable = true;
-
   # I think I need a gtk theme? gnome-keyring
   qt.platformTheme = "gtk2";
 
@@ -60,9 +55,6 @@
     godot_4-mono
   ];
 
-  # Enable trash:/// support
-  services.gvfs.enable = true;
-
   # Before changing this value read the documentation for this option
   # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
   system.stateVersion = "23.11"; # Did you read the comment?

modules/filesystem.nix

@@ -0,0 +1,26 @@
+{ config, lib, ... }:
+
+# This module provides some filesystem functionality I expect to work out of the box
+let
+  cfg = config.snowhawk.filesystem;
+in
+{
+  options.snowhawk.filesystem = {
+    enable = lib.mkEnableOption "filesystem nixos module";
+  };
+
+  config = lib.mkIf cfg.enable {
+    # Building nixos without this uses a ton of disk
+    # Needs to be disabled on low memory systems
+    boot.tmp.useTmpfs = true;
+
+    # This makes shebangs work
+    services.envfs.enable = true;
+
+    # So many things break without this
+    programs.dconf.enable = true;
+
+    # Enable trash:/// support
+    services.gvfs.enable = true;
+  };
+}