fix build with old ghc

This commit is contained in:
Joey Hess 2019-01-18 14:08:10 -04:00
parent a5764c4a78
commit e8ff3c3e73
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@ -15,6 +15,7 @@ import qualified Data.UUID as U
import Data.Maybe
import Data.String
import Data.ByteString.Builder
import qualified Data.Semigroup as Sem
import Utility.FileSystemEncoding
import qualified Utility.SimpleProtocol as Proto
@ -64,7 +65,7 @@ isUUID = isJust . U.fromString
-- A description of a UUID.
newtype UUIDDesc = UUIDDesc B.ByteString
deriving (Eq, Monoid, Semigroup, IsString)
deriving (Eq, Sem.Semigroup, Monoid, IsString)
fromUUIDDesc :: UUIDDesc -> String
fromUUIDDesc (UUIDDesc d) = decodeBS d