Document #15079 in the users' guide
authorRyan Scott <ryan.gl.scott@gmail.com>
Thu, 7 Jun 2018 17:29:12 +0000 (13:29 -0400)
committerBen Gamari <ben@smart-cactus.org>
Thu, 7 Jun 2018 22:06:30 +0000 (18:06 -0400)
commitbc9a838a27f40a6008e127d9105981713abe774b
tree3fd74c0ab8aa884ed2858a11e56f4caf73fafbbc
parent569c16a76ead8f9012fafe7a7e97c72fabe0bb94
Document #15079 in the users' guide

Trac #15079 revealed an interesting limitation in the interaction
between variable visibility and higher-rank kinds. We (Richard and I)
came to the conclusion that this is an acceptable (albeit surprising)
limitation, so this documents in the users' guide to hopefully eliminate
some confusion for others in the future.

Test Plan: Read it

Reviewers: goldfire, bgamari

Reviewed By: bgamari

Subscribers: rwbarton, thomie, carter

GHC Trac Issues: #15079

Differential Revision: https://phabricator.haskell.org/D4803
docs/users_guide/glasgow_exts.rst