2493c8c132
Without the change the eval fails as:
$ nix build --no-link -f. haskell.packages.ghc865Binary.exceptions
error: attribute 'exceptions_0_10_9' missing
at pkgs/development/haskell-modules/configuration-ghc-8.6.x.nix:94:16:
93| # This became a core library in ghc 8.10., so we don’t have an "exception" attribute anymore.
94| exceptions = self.exceptions_0_10_9;
| ^
95|
Did you mean exceptions_0_10_10?