{-#COMPLETE#-} seems to have been fixed

[aryairani]

Until recently we weren't able to make use of the COMPLETE pragma for Reference pattern synonyms; but now we can, apparently.

unison/unison-core/src/Unison/Reference.hs

Lines 60 to 61 in a166d71

	-- A good idea, but causes a weird problem with view patterns in PatternP.hs in ghc 8.4.3
	--{-# COMPLETE Builtin, Derived #-}

[aryairani]

Just kidding; why does it build on my machine but not in CI???

[aryairani]

@mitchellwrosen FYI — In #1751 we weren't sure if situations could arise where caching .stack-work could cause an incorrect build, but I ran into one here. See the build failure on the first commit vs the second; I also needed a stack clean locally to build correctly.