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-rw-r--r--src/Erebos/Storage/Internal.hs5
1 files changed, 2 insertions, 3 deletions
diff --git a/src/Erebos/Storage/Internal.hs b/src/Erebos/Storage/Internal.hs
index 8b794d8..3e8d8b6 100644
--- a/src/Erebos/Storage/Internal.hs
+++ b/src/Erebos/Storage/Internal.hs
@@ -159,12 +159,11 @@ readHex = return . BA.concat <=< readHex'
newtype Generation = Generation Int
deriving (Eq, Show)
-data Head' c a = Head HeadID (Stored' c a)
- deriving (Eq, Show)
-
+-- | UUID of individual Erebos storage head.
newtype HeadID = HeadID UUID
deriving (Eq, Ord, Show)
+-- | UUID of Erebos storage head type.
newtype HeadTypeID = HeadTypeID UUID
deriving (Eq, Ord)