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module GHC.Tc.Utils.Unify where
import GHC.Prelude
import GHC.Tc.Utils.TcType ( TcTauType )
import GHC.Tc.Types ( TcM )
import GHC.Tc.Types.Evidence ( TcCoercion, HsWrapper )
import GHC.Tc.Types.Origin ( CtOrigin )
import GHC.Hs.Expr ( HsExpr )
import GHC.Hs.Type ( HsType, Mult )
import GHC.Hs.Extension ( GhcRn )
-- This boot file exists only to tie the knot between
-- GHC.Tc.Utils.Unify and Inst
unifyType :: Maybe (HsExpr GhcRn) -> TcTauType -> TcTauType -> TcM TcCoercion
unifyKind :: Maybe (HsType GhcRn) -> TcTauType -> TcTauType -> TcM TcCoercion
tcSubMult :: CtOrigin -> Mult -> Mult -> TcM HsWrapper
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