@@ -22,7 +22,7 @@ import qualified Data.Map as Map
22import Data.Maybe
22import Data.Maybe
23import Data.Semigroup (Semigroup (..), (<>))
23import Data.Semigroup (Semigroup (..), (<>))
24import qualified Data.Set as Set
24import qualified Data.Set as Set
25−import Data.These
25+import Data.These (These(..))
26import Data.Tuple
26import Data.Tuple
28-- | Patch a DMap with additions, deletions, and moves. Invariant: If key @k1@
28-- | Patch a DMap with additions, deletions, and moves. Invariant: If key @k1@