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Conditionally error on unused imports

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This turns off the warnings about unused imports _unless_ one is using
the oldest supported version of GHC (right now that's 8.4.4 or older);
then it turns them into errors!  This prevents xmonad from emitting
warnings about imports that have to be there due to backwards
compatibility, but are obsolete in newer versions (think MFP), while at
the same time preventing bitrot.
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slotThe 2020-12-14 13:49:31 +01:00
parent 6715c75c50
commit 53903b086f
1 changed files with 5 additions and 1 deletions
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xmonad-contrib.cabal
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@ -63,7 +63,11 @@ library
xmonad >= 0.15 && < 0.16, xmonad >= 0.15 && < 0.16,
utf8-string utf8-string
ghc-options: -fwarn-tabs -Wall -Wno-unused-do-bind ghc-options: -fwarn-tabs -Wall -Wno-unused-do-bind -Wno-unused-imports
-- Keep this in sync with the oldest version in 'tested-with'
if impl(ghc <= 8.4.4)
ghc-options: -Werror=unused-imports
if flag(use_xft) if flag(use_xft)
build-depends: X11-xft >= 0.2 build-depends: X11-xft >= 0.2