Fix for latest GHC head where ghc-bignum has no exported-modules and renames som of the reexported ones.

Author: hamishmack

lib/call-cabal-project-to-nix.nix

@@ -511,8 +511,8 @@ let
                 json_cabal_file=$(mktemp)
                 cabal2json $fixed_cabal_file > $json_cabal_file
 
-                exposed_modules="$(jq -r '.library."exposed-modules"[]|select(type=="array")[]' $json_cabal_file)"
-                reexported_modules="$(jq -r '.library."reexported-modules"//[]|.[]|select(type=="array")[]' $json_cabal_file)"
+                exposed_modules="$(jq -r '.library."exposed-modules"//[]|.[]|select(type=="array")[]' $json_cabal_file)"
+                reexported_modules="$(jq -r '.library."reexported-modules"//[]|.[]|select(type=="array")[]' $json_cabal_file | sed 's/.* as //g')"
 
                 # FIXME This is a bandaid. Rather than doing this, conditionals should be interpreted.
                 ${pkgs.lib.optionalString pkgs.stdenv.targetPlatform.isGhcjs ''