Disable allow-newer=base workaround.

jonathanknowles · jonathanknowles · commit 1cabcd8b9cfc · 2026-01-02T16:12:19.000+08:00
This commit reverts the `allow-newer=base` workaround introduced in PR #478.
diff --git a/cabal.project b/cabal.project
@@ -1,8 +1,6 @@
 packages:
   .
 
-allow-newer: base
-
 package doctest
   ghc-options: -Werror
 
