1 files changed, 90 insertions, 0 deletions
diff --git a/modules/nixosModules/directories.nix b/modules/nixosModules/directories.nix
new file mode 100644
index 0000000..6a1426f
--- /dev/null
+++ b/modules/nixosModules/directories.nix
@@ -0,0 +1,90 @@
+{inputs, ...}: {
+  flake.nixosModules.directories = {
+    config,
+    lib,
+    ...
+  }:
+    with lib; let
+      cfg = config.createPaths;
+      pathAttrsToListRec = pathsAttrSet: parentPath: parentConfig:
+        lib.flatten (lib.mapAttrsToList (path: config: let
+          filteredConfig = lib.filterAttrs (n: v: v != null) (builtins.removeAttrs config ["subPaths"]);
+          out =
+            {
+              path =
+                if parentPath == ""
+                then path
+                else parentPath + "/" + path;
+            }
+            // parentConfig // filteredConfig;
+        in
+          if config ? subPaths
+          then [out] ++ (pathAttrsToListRec config.subPaths path filteredConfig)
+          else [out])
+        pathsAttrSet);
+      pathConfig = {
+        options = {
+          group = mkOption {
+            type = types.nullOr types.str;
+            default = null;
+          };
+          owner = mkOption {
+            type = types.nullOr types.str;
+            default = null;
+          };
+          permissions = mkOption {
+            type = types.nullOr types.str;
+            default = null;
+          };
+          subPaths = mkOption {
+            type = types.attrsOf (types.submodule pathConfig);
+            default = {};
+          };
+        };
+      };
+      pathList = pathAttrsToListRec cfg "" {};
+    in rec {
+      options = {
+        createPaths = mkOption {
+          type = types.attrsOf (types.submodule {
+            options = {
+              group = mkOption {
+                type = types.str;
+              };
+              owner = mkOption {
+                type = types.str;
+              };
+              permissions = mkOption {
+                type = types.str;
+                default = "0740";
+              };
+              subPaths = mkOption {
+                type = types.attrsOf (types.submodule pathConfig);
+                default = {};
+                description = ''
+                  SubPaths to create using systemd tmpfiles.
+                '';
+              };
+            };
+          });
+          default = {};
+          description = ''
+            Paths to create using systemd tmpfiles.
+          '';
+        };
+      };
+
+      config = mkIf (cfg != {}) {
+        systemd.tmpfiles.rules =
+          map
+          (dir: "d ${dir.path} ${dir.permissions} ${dir.owner} ${dir.group}")
+          pathList;
+
+        users = let
+          extraGroups = map (path: path.group) pathList;
+        in {
+          groups = genAttrs extraGroups (group: {});
+        };
+      };
+    };
+}