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Fix build with ghc-8.8.x.

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The 'fail' method has been moved to the 'MonadFail' class. I made the changes
so that the code still compiles with previous versions of 'base' that don't
have the new MonadFail class exported by Prelude yet.
This commit is contained in:
Peter Simons 2020-02-28 11:56:48 +01:00 • committed by Joey Hess
parent c257951b85
commit 73cf523a4b
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4 changed files with 13 additions and 9 deletions
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7
Command/Init.hs
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@ -13,6 +13,7 @@ import Annex.Version
import Types.RepoVersion
import qualified Annex.SpecialRemote
import Control.Monad.Fail as Fail ( MonadFail(..) )
import qualified Data.Map as M
cmd :: Command
@ -33,14 +34,14 @@ optParser desc = InitOptions
<> help "Override default annex.version"
))
parseRepoVersion :: Monad m => String -> m RepoVersion
parseRepoVersion :: MonadFail m => String -> m RepoVersion
parseRepoVersion s = case RepoVersion <$> readish s of
Nothing -> fail $ "version parse error"
Nothing -> Fail.fail $ "version parse error"
Just v
| v `elem` supportedVersions -> return v
| otherwise -> case M.lookup v autoUpgradeableVersions of
Just v' -> return v'
Nothing -> fail $ s ++ " is not a currently supported repository version"
Nothing -> Fail.fail $ s ++ " is not a currently supported repository version"
seek :: InitOptions -> CommandSeek
seek = commandAction . start