haskell.packages.ghc810.text-metrics: jailbreak because of overly-strict bounds

pkgs/development/haskell-modules/configuration-ghc-8.10.x.nix

···
     algebraic-graphs = dontCheck self.algebraic-graphs_0_6_1;
   });
 
+  # Overly-strict bounds introducted by a revision in version 0.3.2.
+  text-metrics = doJailbreak super.text-metrics;
+
   # OneTuple needs hashable (instead of ghc-prim) and foldable1-classes-compat for GHC < 9
   OneTuple = addBuildDepends [
     self.foldable1-classes-compat