1 files changed, 90 insertions, 0 deletions
diff --git a/nixos/serverModules/directories.nix b/nixos/serverModules/directories.nix
new file mode 100644
index 0000000..f5c769f
--- /dev/null
+++ b/nixos/serverModules/directories.nix
@@ -0,0 +1,90 @@
+{
+  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.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 = {};
+            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: {});
+    };
+  };
+}