fixed nix-darwin building

modules/system-modules/users.nix

@@ -0,0 +1,97 @@
+{
+  lib,
+  config,
+  ...
+}: let
+  host = config.host;
+
+  hostUsers = host.hostUsers;
+  principleUsers = host.principleUsers;
+in {
+  options.host = {
+    users = lib.mkOption {
+      default = {};
+      type = lib.types.attrsOf (lib.types.submodule ({
+        config,
+        name,
+        ...
+      }: {
+        options = {
+          name = lib.mkOption {
+            type = lib.types.str;
+            default = name;
+            description = ''
+              What should this users name on the system be
+            '';
+            defaultText = lib.literalExpression "config.host.users.\${name}.name";
+          };
+          isPrincipleUser = lib.mkOption {
+            type = lib.types.bool;
+            default = false;
+            description = ''
+              User should be configured as root and have ssh access
+            '';
+            defaultText = lib.literalExpression "config.host.users.\${name}.isPrincipleUser";
+          };
+          isDesktopUser = lib.mkOption {
+            type = lib.types.bool;
+            default = false;
+            description = ''
+              User should install their desktop applications
+            '';
+            defaultText = lib.literalExpression "config.host.users.\${name}.isDesktopUser";
+          };
+          isTerminalUser = lib.mkOption {
+            type = lib.types.bool;
+            default = false;
+            description = ''
+              User should install their terminal applications
+            '';
+            defaultText = lib.literalExpression "config.host.users.\${name}.isTerminalUser";
+          };
+          isNormalUser = lib.mkOption {
+            type = lib.types.bool;
+            default = config.isDesktopUser || config.isTerminalUser;
+            description = ''
+              User should install their applications and can log in
+            '';
+            defaultText = lib.literalExpression "config.host.users.\${name}.isNormalUser";
+          };
+        };
+      }));
+    };
+    hostUsers = lib.mkOption {
+      default = lib.attrsets.mapAttrsToList (_: user: user) host.users;
+    };
+    principleUsers = lib.mkOption {
+      default = lib.lists.filter (user: user.isPrincipleUser) hostUsers;
+    };
+    normalUsers = lib.mkOption {
+      default = lib.lists.filter (user: user.isTerminalUser) hostUsers;
+    };
+    terminalUsers = lib.mkOption {
+      default = lib.lists.filter (user: user.isNormalUser) hostUsers;
+    };
+  };
+
+  config = {
+    assertions =
+      (
+        builtins.map (user: {
+          assertion = !(user.isPrincipleUser && !user.isNormalUser);
+          message = ''
+            Non normal user ${user.name} can not be a principle user.
+          '';
+        })
+        hostUsers
+      )
+      ++ [
+        {
+          assertion = (builtins.length principleUsers) > 0;
+          message = ''
+            At least one user must be a principle user.
+          '';
+        }
+      ];
+  };
+}