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diff --git a/users/glittershark/xanthous/src/Xanthous/Util/Comonad.hs b/users/glittershark/xanthous/src/Xanthous/Util/Comonad.hs
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index 9e158cc8e2d4..000000000000
--- a/users/glittershark/xanthous/src/Xanthous/Util/Comonad.hs
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---------------------------------------------------------------------------------
-module Xanthous.Util.Comonad
-  ( -- * Store comonad utils
-    replace
-  , current
-  ) where
---------------------------------------------------------------------------------
-import Xanthous.Prelude
---------------------------------------------------------------------------------
-import Control.Comonad.Store.Class
---------------------------------------------------------------------------------
-
--- | Replace the current position of a store comonad with a new value by
--- comparing positions
-replace :: (Eq i, ComonadStore i w) => w a -> a -> w a
-replace w x = w =>> \w' -> if pos w' == pos w then x else extract w'
-{-# INLINE replace #-}
-
--- | Lens into the current position of a store comonad.
---
---     current = lens extract replace
-current :: (Eq i, ComonadStore i w) => Lens' (w a) a
-current = lens extract replace
-{-# INLINE current #-}