gnu: glibc-locales@2.37: Mark as hidden.

Fixes <https://issues.guix.gnu.org/67586>.

* gnu/packages/base.scm (glibc-locales/hurd): Wrap in ‘hidden-package’.

Change-Id: If4f4aa1ef66c53ee0bb52eaea533241652e48cca

Reported-by: Nils Landt <nils@landt.email>
Change-Id: I5150f13be9c3b23e7abe408f815c56f498c92ecb

gnu/packages/base.scm

@@ -1529,7 +1529,10 @@ command.")
      glibc)))
 
 (define-public glibc-locales/hurd
-  (make-glibc-locales glibc/hurd))
+  ;; Locales again; hide them because their 'supported-systems' field suggests
+  ;; they're Hurd-only, making them non-installable on GNU/Linux.
+  (hidden-package
+   (make-glibc-locales glibc/hurd)))
 
 (define* (libc-locales-for-target #:optional
                                   (target (or (%current-target-system)