Revert "revert "extra < 1.7" (#5228)"

intro still has low bound

This reverts commit 32e0a14d78.
This commit is contained in:
Jens Petersen 2020-03-18 15:59:44 +08:00
parent 32e0a14d78
commit eaabf0fb10

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@ -4734,6 +4734,9 @@ packages:
# https://github.com/commercialhaskell/stackage/issues/new
- mini-egison <1.0.0
# https://github.com/commercialhaskell/stackage/issues/5228
- extra < 1.7
# https://github.com/commercialhaskell/stackage/issues/5236
- rank2classes < 1.4