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| author | Vladislav Zavialov <vlad.z.4096@gmail.com> | 2020-04-13 16:29:44 +0300 |
|---|---|---|
| committer | Vladislav Zavialov <vlad.z.4096@gmail.com> | 2020-04-23 17:21:28 +0300 |
| commit | e21f3023b095d9bbd000330b56aaaa2977134335 (patch) | |
| tree | e4f66eb46539c3d62b47648297915d19d8105f6a /compiler/GHC/Iface/Recomp.hs | |
| parent | 8ea37b01b6ab16937f7b528b6bbae9fade9f1361 (diff) | |
| download | haskell-wip/semigroup-sdoc.tar.gz | |
Use Semigroup's (<>) for Doc/SDocwip/semigroup-sdoc
Before this patch, Outputable.hs defined its own (<>) which caused
conflicts with (Data.Semigroup.<>) and thus led to inconvenience.
However, replacing it is not trivial due to a different fixity:
http://www.haskell.org/pipermail/libraries/2011-November/017066.html
Nevertheless, it is possible to update the pretty-printing code to work
with (<>) of a different fixitiy, and that's what this patch implements.
Now Doc and SDoc are instances of Semigroup.
Diffstat (limited to 'compiler/GHC/Iface/Recomp.hs')
| -rw-r--r-- | compiler/GHC/Iface/Recomp.hs | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/compiler/GHC/Iface/Recomp.hs b/compiler/GHC/Iface/Recomp.hs index 57809a6d59..a1f7e6d0ee 100644 --- a/compiler/GHC/Iface/Recomp.hs +++ b/compiler/GHC/Iface/Recomp.hs @@ -49,10 +49,6 @@ import qualified Data.Map as Map import qualified Data.Set as Set import GHC.Driver.Plugins ( PluginRecompile(..), PluginWithArgs(..), pluginRecompile', plugins ) ---Qualified import so we can define a Semigroup instance --- but it doesn't clash with Outputable.<> -import qualified Data.Semigroup - {- ----------------------------------------------- Recompilation checking |