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Description of problem: haskell-platform fails to build under ghc-7.8.4 on aarch64. Version-Release number of selected component (if applicable): haskell-platform-2014.2.0.0.1-1.fc22 How reproducible: 100% Steps to Reproduce: 1. fedpkg local/build Actual results: Configuring haskell-platform-2014.2.0.0.1... Setup: The program alex version ==3.1.3 is required but the version of /usr/bin/alex could not be determined. Expected results: no error Additional info: Workaround will probably be to comment out alex from haskell-platform.cabal.
I don't think this is just limited to the above. I see similar with the ghc-haskell-src-exts build and happy req http://arm.koji.fedoraproject.org/koji/taskinfo?taskID=2955322
And ghc-language-javascript with happy http://arm.koji.fedoraproject.org/koji/taskinfo?taskID=2955282
And ghc-language-java with alex http://arm.koji.fedoraproject.org/koji/taskinfo?taskID=2955263 there appears to be a theme ;-)
gtk2hs-buildtools has issues detecting alex too. This one affects quite a number of package builds http://arm.koji.fedoraproject.org/koji/taskinfo?taskID=2955394 Can we up the priority on this issue now?
Actually it now looks like this really is a duplicate of bug 1195231. erikd posted a patch which likely fixes this to upstream, which I am testing in http://arm.koji.fedoraproject.org/koji/taskinfo?taskID=2957099
The upstream ticket is <https://ghc.haskell.org/trac/ghc/ticket/9673>.
gtk2hs-buildtools-0.13.0.3-2.fc22 has been submitted as an update for Fedora 22. https://admin.fedoraproject.org/updates/gtk2hs-buildtools-0.13.0.3-2.fc22
It's clear this is a more wider problem that just a single issue with gtk2hs-buildtools. ghc-cairo http://arm.koji.fedoraproject.org/koji/taskinfo?taskID=2965561 What is the status of getting a proper fix?
(In reply to Peter Robinson from comment #8) > It's clear this is a more wider problem that just a single issue with > gtk2hs-buildtools. > ghc-cairo http://arm.koji.fedoraproject.org/koji/taskinfo?taskID=2965561 Right it is a ghc bug and affects all versioned build-tools detection during Cabal configure. > What is the status of getting a proper fix? Have a look at the upstream ticket (comment 6): people are working on it now. Still hard to say when a fix will be available.
Basically it seems ghc is not flushing output to stdout from subprocesses on aarch64 (ie from processes not attached to a tty). See eg https://ghc.haskell.org/trac/ghc/ticket/9673#comment:23 for a minimal reproducer.
Okay the solution seems to be to use ld.gold for aarch64 too (like armv7).
*** This bug has been marked as a duplicate of bug 1195231 ***
gtk2hs-buildtools-0.13.0.3-2.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.