March 2014 - cabal-devel

GSoC - request for mentor
by Chris Wong 28 Mar '14

28 Mar '14

Hi all, Like Mateusz Lenik, I am looking for a mentor for the Google Summer of Code. The project aims to make various improvements to Hackage, such as exposing build reports and documentation uploads. An initial proposal is here [1], though as Greg Weber notes, the details may change if the project is accepted. Feel free to ping me if mentoring interests you. Chris [1] http://www.google-melange.com/gsoc/proposal/review/student/google/gsoc2014/…

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Bug on lhs files
by Pierre-Étienne Meunier 26 Mar '14

26 Mar '14

Hi, There is a bug in cabal haddock, when lines in an lhs file start with a $, which is quite common when writing a paper with large TeX fragments in the programs. For instance, cabal haddock fails on the following lhs file: blabla, blibli $a+b$ \begin{code} main=putStrLn "Hello" \end{code} I first thought it was a haddock bug, but the haddock maintainers disagree:http://trac.haskell.org/haddock/ticket/293 Pierre-Étienne Meunier

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module ‘free-4.6.1:Main’ is defined in multiple files
by Mateusz Kowalczyk 24 Mar '14

24 Mar '14

Greetings, First of all to people reading this at ghc-devs, I don't expect this to be a direct problem caused by GHC but who knows, so I'm CC'ing it anyway. As you might know, GHC 7.8.1 is scheduled to release Very Soon™ (later today?). We got a report at Haddock Trac few weeks ago about a strange error, see http://trac.haskell.org/haddock/ticket/284. I have asked about this on cabal-devel before and Mikhail said that maybe it's https://github.com/haskell/cabal/pull/1374 but it's unlikely because the changes aren't ran by default. Today I got new reports of this problem and so far everyone on OSX seems to be affected! This suddenly became a big problem. To replicate: 1. Find OSX machine 2. Get GHC 7.8 rc2 package (which includes Haddock at that stage) 3. git clone git@github.com:ekmett/free.git && cd free 4. cabal install --only-dependencies --enable-documentation && cabal configure && cabal haddock The reason I'm barking up cabal-devel and ghc-devs is because I honestly can not think of anything that has changed since Haddock 2.13.2.1 that could possibly cause this. Does anyone have any idea at all? I think it would be very bad to release now and have everyone on OSX unable to build docs. FYI I get build docs on 32-bit Linux. No idea about Windows. Thanks, I hope to hear back soon. PS: How does one go about downgrading Cabal and cabal-install? If we wanted to check whether cabal is the problem, how? -- Mateusz K.

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[Hackage] [GSoC] Improving authentication system in Hackage -- student looking for a mentor
by Mateusz Lenik 20 Mar '14

20 Mar '14

Hello everyone, I'm a student interested in improving the authentication system in Hackage during Google Summer of Code, but currently I don't have a mentor. Current version of my proposal is attached to this email. It can also be found on google-melange.com. Please contact me if you're interested in mentoring this project. Thank you, Mateusz

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Github issues database really needs a cleanup
by Bryan O'Sullivan 16 Mar '14

16 Mar '14

There are literally hundreds of issues in there that I imported during the migration from trac that have never been touched since. Having the issue tracker be a graveyard of ancient junk that will never be touched does not strike me as a healthy state of affairs. Would anyone mind if I were to triage some of the old stuff and kill it off?

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cabal doesn't explore the none manual flags very well
by Carter Schonwald 12 Mar '14

12 Mar '14

Hey all, i'm repeatedly seeing many examples where a Manual : False flag is used to encode an "OR" in the cabal configuration, and where cabal "gives up" on finding the "right" build plan i know it can find if it has to flip the flag in a dependency its building... Is this a known issue? how can i mitigate it?

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Cabal-1.18.1.3 and cabal-install-1.18.0.3 releases made
by Johan Tibell 06 Mar '14

06 Mar '14

Hi, I've just made a release of Cabal/cabal-install, for the benefit of GHC 7.8. People have in the past expressed a desire for having prebuilt binaries of cabal-install. I'm happy to upload such binaries if people send them to me. Please specify for which arch/OS the binary is built. -- Johan

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Gearing up for 1.20
by Johan Tibell 05 Mar '14

05 Mar '14

Hi, I'd like to get 1.20 out by the end of the month. There's enough interesting stuff in there to be worth making a release. Here are the current open issues for the 1.20 milestone: https://github.com/haskell/cabal/issues?milestone=21 These are mostly feature requests so we could technically do without any of them, but it would be nice to knock some off if people have some free weekend hacking time. Thoughts? -- Johan

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The 1.18 branch is reaching end-of-life
by Johan Tibell 04 Mar '14

04 Mar '14

Hi, With the 1.18 releases for GHC 7.8 out of the way, I'm going to retire the 1.18 branch* so please don't push any more commits to it. * Except if there are any late minute fixes *required* for GHC 7.8 to work well. -- Johan

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Haddock fails with "Module defined in multiple files"
by Mateusz Kowalczyk 04 Mar '14

04 Mar '14

Hi, We just got a bug report over at Haddock Trac[1]. What's not mentioned is that it works fine for the user on GHC 7.6.3 with Haddock 2.13.1. I can't think of any Haddock changes that could have potentially caused the reported breakage. This e-mail is to ask whether any Cabal(-install) devs can think of anything that might have changed on your end of things that could cause this before we go off chasing a bug in the wrong project. I don't follow the changes in cabal (even though I should) so it might be something really obvious that changed recently that we aren't aware of. Thanks [1]: http://trac.haskell.org/haddock/ticket/284 -- Mateusz K.

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