feat: add module to easily symlink into a user's $HOME

options/system/default.nix

@@ -3,5 +3,6 @@
     ./networking
     ./roles
     ./outputs.nix
+    ./users
   ];
 }

options/system/users/default.nix

@@ -0,0 +1,73 @@
+{
+  pkgs,
+  config,
+  lib,
+  ...
+}:
+let
+  inherit (lib) mkOption;
+  inherit (lib.types)
+    attrsOf
+    submodule
+    str
+    package
+    either
+    ;
+
+  cfg = config.modules.system.users;
+  file = submodule (
+    { name, config, ... }:
+    {
+      options = {
+        path = mkOption {
+          type = either package null;
+          default = null;
+        };
+
+        content = mkOption {
+          type = either str null;
+          default = null;
+        };
+      };
+    }
+  );
+in
+{
+  options.modules.system.users = mkOption {
+    default = { };
+    type = attrsOf (
+      submodule (
+        { name, config, ... }:
+        {
+          options = {
+            name = mkOption {
+              type = str;
+              default = name;
+            };
+
+            files = mkOption {
+              type = attrsOf file;
+              default = { };
+            };
+          };
+        }
+      )
+    );
+  };
+
+  config =
+    let
+      toDeriv =
+        b: a: if a.content != null then pkgs.writers.writeText (lib.my.slugify b) a.content else a.path;
+    in
+    {
+      systemd.tmpfiles.rules = lib.flatten (
+        lib.mapAttrsToList (
+          name: value:
+          lib.mapAttrsToList (target: value: [
+            "L+ /home/${name}/${target} - - - - ${toDeriv target value}"
+          ]) value.files
+        ) cfg
+      );
+    };
+}