switch from data-default-class to data-default

because data-default-0.8 now deprecates data-default-class

cabal.project

@@ -1,7 +1,7 @@
 write-ghc-environment-files: ghc8.4.4+
 packages: .
 
--- allow-newer: all
--- constraints: filepath <1.5
--- -- ^ The above constraint is necessary to cancel the effect of "allow-newer" on filepath.
--- -- 'unix' package (without "os-string" flag) has the above constraint, which is necessary to make a valid build plan.
+allow-newer: all
+constraints: filepath <1.5
+-- ^ The above constraint is necessary to cancel the effect of "allow-newer" on filepath.
+-- 'unix' package (without "os-string" flag) has the above constraint, which is necessary to make a valid build plan.

fold-debounce.cabal

@@ -21,7 +21,7 @@ library
   default-extensions:   DeriveDataTypeable
   -- other-modules:
   build-depends:        base ^>=4.14.0 || ^>=4.15.0 || ^>=4.16.0 || ^>=4.17.0 || ^>=4.18.0 || ^>=4.19.0 || ^>=4.20.0,
-                        data-default-class ^>=0.1.2,
+                        data-default,
                         stm ^>=2.5.0,
                         time ^>=1.9.3 || ^>=1.11.1 || ^>=1.12.2,
                         stm-delay ^>=0.1.1

src/Control/FoldDebounce.hs

@@ -85,7 +85,7 @@ import           Control.Concurrent.STM       (STM, TChan, TVar, atomically, new
                                                readTChan, readTVar, retry, throwSTM, writeTChan,
                                                writeTVar)
 import           Control.Concurrent.STM.Delay (cancelDelay, newDelay, waitDelay)
-import           Data.Default.Class           (Default (def))
+import           Data.Default                 (Default (def))
 import           Data.Time                    (UTCTime, addUTCTime, diffUTCTime, getCurrentTime)
 
 -- | Mandatory parameters for 'new'.