Merge pull request #11003 from haskell/make-lukko-flag-automatic-and-false-by-default

Make `lukko` flag automatic and off by default

Author: mergify[bot]

cabal-install/cabal-install.cabal

@@ -36,8 +36,8 @@ Flag native-dns
 
 Flag lukko
   description:  Use @lukko@ for file-locking
-  default:      True
-  manual:       True
+  default:      False
+  manual:       False
 
 flag git-rev
   description: include Git revision hash in version

changelog.d/pr-11003.md

@@ -0,0 +1,8 @@
+---
+synopsis: Make lukko flag automatic and off by default
+packages: [cabal-install]
+prs: 11003
+issues: 10724
+---
+
+Make `lukko` flag automatic and off by default, using file locking facilities from `base:GHC.IO.Handle.Lock` and not from the `lukko` package. The change is not expected to affect anyone detrimentally, but one can set the flag on in their configuration to restore the previous behaviour.