Fixed compilation with ghc-9.2

Author: coot

io-classes/io-classes.cabal

@@ -89,7 +89,7 @@ library
                        Control.Monad.Class.MonadTest
   default-language:    GHC2021
   default-extensions:  LambdaCase
-  build-depends:       base  >=4.9 && <4.22,
+  build-depends:       base  >=4.16 && <4.22,
                        array,
                        async >=2.1 && <2.3,
                        bytestring,
@@ -118,6 +118,8 @@ library strict-stm
   reexported-modules:  Control.Concurrent.Class.MonadSTM.TSem as Control.Concurrent.Class.MonadSTM.Strict.TSem
   default-language:    GHC2021
   default-extensions:  LambdaCase
+  if impl(ghc < 9.4)
+    default-extensions: GADTs
   build-depends:       base,
                        array,
 
@@ -134,6 +136,8 @@ library strict-mvar
   exposed-modules:     Control.Concurrent.Class.MonadMVar.Strict
   default-language:    GHC2021
   default-extensions:  LambdaCase
+  if impl(ghc < 9.4)
+    default-extensions: GADTs
   build-depends:       base,
                        io-classes:io-classes,
 

io-sim/io-sim.cabal

@@ -62,7 +62,7 @@ library
                        Data.Deque.Strict
   default-language:    GHC2021
   default-extensions:  LambdaCase
-  build-depends:       base              >=4.9 && <4.22,
+  build-depends:       base              >=4.16 && <4.22,
                        io-classes:{io-classes,strict-stm,si-timers}
                                         ^>=1.6 || ^>= 1.7 || ^>= 1.8,
                        exceptions        >=0.10,