Add the tool "nixos-typecheck" that can check an option declaration to:

 - Enforce that an option declaration has a "defaultText" if and only if the
   type of the option derives from "package", "packageSet" or "nixpkgsConfig"
   and if a "default" attribute is defined.

 - Enforce that the value of the "example" attribute is wrapped with "literalExample"
   if the type of the option derives from "package", "packageSet" or "nixpkgsConfig".

 - Warn if a "defaultText" is defined in an option declaration if the type of
   the option does not derive from "package", "packageSet" or "nixpkgsConfig".

 - Warn if no "type" is defined in an option declaration.

1 files changed, 3 insertions, 0 deletions

diff --git a/nixos/modules/services/misc/gitlab.nix b/nixos/modules/services/misc/gitlab.nix
index cc50bfbea53..e6ebcd6dc14 100644
--- a/nixos/modules/services/misc/gitlab.nix
+++ b/nixos/modules/services/misc/gitlab.nix
@@ -155,18 +155,21 @@ in {
       packages.gitlab = mkOption {
         type = types.package;
         default = pkgs.gitlab;
+        defaultText = "pkgs.gitlab";
         description = "Reference to the gitlab package";
       };
 
       packages.gitlab-shell = mkOption {
         type = types.package;
         default = pkgs.gitlab-shell;
+        defaultText = "pkgs.gitlab-shell";
         description = "Reference to the gitlab-shell package";
       };
 
       packages.gitlab-workhorse = mkOption {
         type = types.package;
         default = pkgs.gitlab-workhorse;
+        defaultText = "pkgs.gitlab-workhorse";
         description = "Reference to the gitlab-workhorse package";
       };