Update libffi req for ubuntu groovy

Fixed #110

ghcup-0.0.4.yaml

@@ -28,7 +28,7 @@ toolRequirements:
           - libncurses5
           - libtinfo5
           notes: ''
-        ">= 20.04":
+        "( >= 20.04 && < 20.10 )":
           distroPKGs:
           - build-essential
           - curl
@@ -40,6 +40,18 @@ toolRequirements:
           - libncurses5
           - libtinfo5
           notes: ''
+        "( >= 20.10 )":
+          distroPKGs:
+          - build-essential
+          - curl
+          - libffi-dev
+          - libffi8ubuntu1
+          - libgmp-dev
+          - libgmp10
+          - libncurses-dev
+          - libncurses5
+          - libtinfo5
+          notes: ''
       Linux_CentOS:
         '( >= 7 && < 8 )':
           distroPKGs:

lib/GHCup.hs

@@ -1314,17 +1314,12 @@ upgradeGHCup dls mtarget force pfreq = do
   tmp   <- lift withGHCupTmpDir
   let fn = [rel|ghcup|]
   p <- liftE $ download dli tmp (Just fn)
-  let destDir = dirname destFile
-      destFile = fromMaybe (binDir </> fn) mtarget
-  lift $ $(logDebug) [i|mkdir -p #{toFilePath destDir}|]
-  liftIO $ createDirRecursive' destDir
-  lift $ $(logDebug) [i|rm -f #{toFilePath destFile}|]
-  liftIO $ hideError NoSuchThing $ deleteFile destFile
-  lift $ $(logDebug) [i|cp #{toFilePath p} #{toFilePath destFile}|]
+  let fullDest = fromMaybe (binDir </> fn) mtarget
+  liftIO $ hideError NoSuchThing $ deleteFile fullDest
   handleIO (throwE . CopyError . show) $ liftIO $ copyFile p
-                                                           destFile
+                                                           fullDest
                                                            Overwrite
-  lift $ chmod_755 destFile
+  lift $ chmod_755 fullDest
   pure latestVer