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Avoid using to-be-deprecated Data.List.NonEmpty.unzip #8916

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May 15, 2023
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Avoid using to-be-deprecated Data.List.NonEmpty.unzip #8916

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4 changes: 3 additions & 1 deletion Cabal/src/Distribution/Simple/BuildTarget.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -57,6 +57,7 @@ import Distribution.Utils.Path

import qualified Distribution.Compat.CharParsing as P

import Control.Arrow ( (&&&) )
import Control.Monad ( msum )
import Data.List ( stripPrefix, groupBy )
import qualified Data.List.NonEmpty as NE
Expand Down Expand Up @@ -320,7 +321,8 @@ resolveBuildTarget pkg userTarget fexists =
where
classifyMatchErrors errs
| Just expected' <- NE.nonEmpty expected
= let (things, got:|_) = NE.unzip expected' in
= let unzip' = fmap fst &&& fmap snd
(things, got:|_) = unzip' expected' in
BuildTargetExpected userTarget (NE.toList things) got
| not (null nosuch) = BuildTargetNoSuch userTarget nosuch
| otherwise = error $ "resolveBuildTarget: internal error in matching"
Expand Down