#13194: Concurrent modifications of package.cache are not safe -------------------------------------+------------------------------------- Reporter: arybczak | Owner: arybczak Type: bug | Status: new Priority: normal | Milestone: Component: ghc-pkg | Version: 8.0.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D3090 Wiki Page: | -------------------------------------+------------------------------------- Comment (by arybczak): While the patch is for 8.1, I adapted it for 8.0.2 (by basically adjusting MIN_VERSION_base to 4.9.1) and tested on Windows. It works fine, i.e. cabal using patched GHC was able to build dependencies for stack concurrently without failures (with -j8) a couple of times, whereas cabal using stock 8.0.1 failed every time with "permission denied" error during register phase of one of the packages. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13194#comment:8 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler