Revert "gnu: Remove python-virtualenv-for-hatch."

This reverts commit b264415711.

Hatch still needs a lower version:

  ...checking requirements: ERROR: hatch==1.9.7
  ContextualVersionConflict(virtualenv
  20.29.1 (/gnu/store/<...>-python-virtualenv-20.29.1/lib/python3.11/site-packages),
  Requirement.parse('virtualenv<20.26.0'), {'hatch'})

Change-Id: I8da2372dc595bb62629581193540ef8bc17295e8

gnu/packages/python-xyz.scm

@@ -39870,6 +39870,19 @@ e.g. filters, callbacks and errbacks can all be promises.")
      "Virtualenv is a tool to create isolated Python environments.")
     (license license:expat)))
 
+(define-public python-virtualenv-for-hatch
+  ;; For hatch@1.9.7, remove when no longer required.
+  (hidden-package
+   (package
+     (inherit python-virtualenv)
+     (version "20.25.3")
+     (source
+      (origin
+        (method url-fetch)
+        (uri (pypi-uri "virtualenv" version))
+        (sha256
+         (base32 "1gj57xqgrg53yfn9ypikgky01hvazxdyl556kwsc7b7avyxm9dbv")))))))
+
 ;; XXX: No new release since 2021, no updates on default branch since 2023, no
 ;; users in Guix; consider to remove if it keeps failing to build.
 (define-public python-virtualenv-clone