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| author | Andreas Källberg <anka.213@gmail.com> | 2020-09-05 20:23:07 +0200 |
|---|---|---|
| committer | Andreas Källberg <anka.213@gmail.com> | 2020-09-05 20:23:07 +0200 |
| commit | 7268253f5ae4b4883d28faa87b3e63295f04abfd (patch) | |
| tree | fb95bb40e3f8dece1deb018857b948a645003993 /src/compiler/GF/Infra/SIO.hs | |
| parent | 1234c715fc6fe19d0c9fce794e4dfedf190b8d18 (diff) | |
MonadFail: Make backwards-compatible
Diffstat (limited to 'src/compiler/GF/Infra/SIO.hs')
| -rw-r--r-- | src/compiler/GF/Infra/SIO.hs | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/compiler/GF/Infra/SIO.hs b/src/compiler/GF/Infra/SIO.hs index 2cb6d1ccd..0ce431380 100644 --- a/src/compiler/GF/Infra/SIO.hs +++ b/src/compiler/GF/Infra/SIO.hs @@ -42,6 +42,7 @@ import qualified GF.Command.Importing as GF(importGrammar, importSource) #ifdef C_RUNTIME import qualified PGF2 #endif +import qualified Control.Monad.Fail as Fail -- * The SIO monad @@ -58,7 +59,7 @@ instance Monad SIO where return x = SIO (const (return x)) SIO m1 >>= xm2 = SIO $ \ h -> m1 h >>= \ x -> unS (xm2 x) h -instance MonadFail SIO where +instance Fail.MonadFail SIO where fail = liftSIO . fail instance Output SIO where |