Antero Mejr schreef op zo 26-06-2022 om 09:59 [-0400]:
> +      (inputs (list tzdata))

What's this input for?  Packages shouldn't have tzdata in their inputs,
because it's a bunch of facts about the external world.  When doing
this, running hare's equivalent of `date` from an old profile would
give a bogus result because of out-of-date time zone info.

Also, the rebuilding problem, from (gnu packages base):

;;; A "fixed" version of tzdata, which is used in the test suites of glib and R
;;; and a few other places. We can update this whenever we are able to rebuild
;;; thousands of packages (for example, in a core-updates rebuild). This package
;;; will typically be obsolete and should never be referred to by a built
;;; package.
;;;
;;; Please make this a hidden-package if it is different from the primary tzdata
;;; package.
(define-public tzdata-for-tests tzdata)

Greetings,
Maxime.