#11153: building lens-4.12.3 impossible happened: dupe _hs_primitive_memcpy --------------------------------------+---------------------------------- Reporter: blippy | Owner: Type: bug | Status: infoneeded Priority: normal | Milestone: Component: libraries (other) | Version: 7.10.2 Resolution: | Keywords: Operating System: Windows | Architecture: x86 Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | --------------------------------------+---------------------------------- Comment (by thomie): Hmm, I can't reproduce this. I installed haskell-platform 7.10.2, and then ran `stack install lens --resolver=lts-3.16`. Perhaps it really is a Windows-only bug. Part of the problem is that `haskell-platform` and `stack` don't play well together. See for example: https://mail.haskell.org/pipermail/haskell- community/2015-September/000014.html. So one solution would be to uninstall `haskell-platform`, and use only `stack`. Maybe upgrading to `haskell-platform 7.10.3` could also work (after uninstalling 7.10.2). 7.10.3 has the same version of `primitive` installed as `stack` wants to install, so that might circumvent the issue. But you might run into other problems later. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11153#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler