Add fixity declaration for :~~:
authorRyan Scott <ryan.gl.scott@gmail.com>
Sun, 18 Jun 2017 20:49:02 +0000 (16:49 -0400)
committerBen Gamari <ben@smart-cactus.org>
Mon, 19 Jun 2017 11:54:32 +0000 (07:54 -0400)
commitee9232524bdba5b268278ec51f30106bb7178ce9
treea455f0b9de3fdc900cf807af7984e4252bd8de60
parent04ca0360a6b38627c2608ed7468f4d8c46257e3a
Add fixity declaration for :~~:

We have one for `(:~:)`, but not for `(:~~:)`! Let's fix this
oversight.

Reviewers: bgamari, austin, hvr

Reviewed By: bgamari

Subscribers: rwbarton, thomie

Differential Revision: https://phabricator.haskell.org/D3657
libraries/base/Data/Type/Equality.hs