Use Win32 >= 2.8 to get Win32.sYNCHRONIZE

cabal-install/cabal-install.cabal

@@ -238,7 +238,7 @@ library
 
     if os(windows)
       -- newer directory for symlinks
-      build-depends: Win32 >= 2 && < 3, directory >=1.3.1.0
+      build-depends: Win32 >= 2.8 && < 3, directory >=1.3.1.0
     else
       build-depends: unix >= 2.5 && < 2.9
 

cabal-install/src/Distribution/Client/Win32SelfUpgrade.hs

@@ -140,7 +140,7 @@ deleteOldExeFile verbosity oldPID tmpPath = do
      ++ show oldPID ++ " at path " ++ tmpPath
 
   log $ "getting handle of parent process " ++ show oldPID
-  oldPHANDLE <- Win32.openProcess Win32.sYNCHORNIZE False (fromIntegral oldPID)
+  oldPHANDLE <- Win32.openProcess Win32.sYNCHRONIZE False (fromIntegral oldPID)
 
   log $ "synchronising with parent"
   event <- openEvent syncEventName