ANNOUNCE: GHC 7.10.1 Release Candidate 2

Miëtek Bak mietek at
Tue Jan 27 06:26:33 UTC 2015

It appears GHC 7.10.1-rc2 doesn’t support glibc 2.11 — specifically, 2.11.1 (Ubuntu 10.04 LTS) and 2.11.3 (Debian 6).  glibc 2.12 (CentOS 6) seems to work fine.  Symptoms include:

   Installing library in
   "/app/ghc/lib/ghc-" --force --global-package-db "/app/ghc/lib/ghc-" update rts/dist/package.conf.install
   Reading package info from "rts/dist/package.conf.install" ... done.
   "utils/ghc-cabal/dist-install/build/tmp/ghc-cabal-bindist" register libraries/ghc-prim dist-install "/app/ghc/lib/ghc-" "/app/ghc/lib/ghc-" "/app/ghc/lib/ghc-" '' '/app/ghc' '/app/ghc/lib/ghc-' '/app/ghc/share/doc/ghc/html/libraries' NO  
   Warning: cannot determine version of /app/ghc/lib/ghc-
   ghc-cabal: '/app/ghc/lib/ghc-' exited with an error:
   /app/ghc/lib/ghc- symbol lookup error:
   undefined symbol: pthread_setname_np

The bindist name does mention 'deb7', so perhaps this is all working as intended.  However, similarly named bindists for GHC 7.8.* work fine with glibc 2.11.

In other news, I’m happy to say Halcyon now supports GHC 7.10.1-rc2 on CentOS 6 and 7, Debian 7, Fedora 19, 20, and 21, and Ubuntu 12 and 14.

   $ halcyon install --ghc-version=7.10.1-rc2 --cabal-version=



On 2015-01-27, at 00:13, Austin Seipp <austin at> wrote:

> We are pleased to announce the second release candidate for GHC 7.10.1:
> This includes the source tarball and bindists for 64bit/32bit Linux
> and Windows. Binary builds for other platforms will be available
> shortly. (CentOS 6.5 binaries are not available at this time like they
> were for 7.8.x). These binaries and tarballs have an accompanying
> SHA256SUMS file signed by my GPG key id (0x3B58D86F).
> We plan to make the 7.10.1 release sometime in February of 2015.
> Please test as much as possible; bugs are much cheaper if we find them
> before the release!
> -- 
> Regards,
> Austin Seipp, Haskell Consultant
> Well-Typed LLP,
> _______________________________________________
> ghc-devs mailing list
> ghc-devs at

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