haskell July 2020

haskell@lists.fedoraproject.org

2 participants
5 discussions

Would it be possible to have recent GHCs in non-modular repositories?
by hekkaidekapus 27 Jul '20

27 Jul '20

Greetings everyone, Let me start with a probably wrong statement: it seems that the Modularity project allows for packaging and installing many major releases for the same package. I gather that is a great upside for packagers like Jens, especially in face of the way Haskell projects manage dependencies. People who are not really into Modularity can disable the relevant repositories. That is where begin my troubles — because I am not a Modularity user. I would like to install a packaged GHC and its its dependencies, and only that; for any other Haskell package, I can do the build myself. The issue is that Fedora non-modular repositories ship an old GHC, namely version GHC-8.6.5. The modular repositories, however, are very up-to-date. Considering the staggering efforts Jens puts into maintaining a large scale of Haskell packages, I first thought he downright gave up on packaging non- modular GHC due to intractable reasons; so, I embarked on a journey of building stuff to see where things might break. But, I have not seen anything break (yet?). If I download the SRPMs Jens makes for modular repositories, they build fine as ursine packages, and I guess that is not surprising. The apparent downside is using the --allowerasing option when dnf-installing them; as I wrote above, that is not an issue for the use case I outlined: all non-boot packages can be built on-demand according to the local application settings; IMHO avoiding global package databases should be an uncontroversial practice. So, what have I got? Let’s see: 1. Were the RPMs really built inside Fedora? #Yes, a) rpm --query --list ghc-compiler-8.10.1-93.fc32.x86_64.rpm # /usr/bin/ghc # … # /usr/lib64/ghc-8.10.1/bin/ghc # … #Yes, b) annocheck --disable-hardened --enable-notes /usr/lib64/ghc-8.10.1/bin/ghc # annocheck: Version 9.21. # Notes: Range: 0x431db8 .. 0x5634b5. # [O] Version: 3a1 # Notes: Range: 0x431fc0 .. 0x431fc5. # [O] Version: 3p906 # [O] Stack Protection: None # [O] Tool: annobin gcc 10.0.1 20200311 # [O] Tool: running gcc 10.0.1 20200311 # [O] ABI: c0013 # [O] PIC: -fpie # [O] Short Enums: Not Used # [O] FORTIFY: not detected # [O] GLIBCXX_ASSERTIONS: Defined # [O] Optimization: -O2 # [O] Control Flow Protection: Full # [O] Omit Frame Pointer: Yes # [O] Stack Clash Protection: Enabled # [O] Stack Realign: Not enabled # Notes: Range: 0x431fc0 .. 0x5634a5. # [O] Version: 3a1b) 2. Do the built binaries behave as expected? #Yes: λ cat > hello.hs << EOF main = putStrLn "Hello, Haskell SIG!\n" EOF λ /usr/bin/ghc hello.hs [1 of 1] Compiling Main ( hello.hs, hello.o ) Linking hello ... So, I have a couple of questions: What are the reasons behind letting GHC-8.6.5 linger in non-modular repositories whereas a fresh compiler could take its place? Is there anything third parties could do to alleviate the burden Jens has certainly to shoulder? Would be there a way to avoid non- modular users having to build GHC from sources every time there is a new release? It goes without saying, I am very grateful to everything Jens has done and does for this SIG. Regards, h.

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Re: Fedora 33 Self-Contained Change proposal: GHC 8.8 and Haskell Stackage LTS 16
by Jens-Ulrik Petersen 22 Jul '20

22 Jul '20

On Fri, Jun 26, 2020 at 10:44 PM Ben Cotton <bcotton(a)redhat.com> wrote: > https://fedoraproject.org/wiki/Changes/GHC_8.8_and_LTS16 On behave of the Haskell SIG I am happy to announce that ghc-8.8.4 and Stackage 16.5 based Haskell packages have now been pushed to Rawhide. Jens

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Haskell SIG meeting 2020-07-21 minutes
by Jens-Ulrik Petersen 21 Jul '20

21 Jul '20

Minutes: https://meetbot.fedoraproject.org/fedora-meeting/2020-07-21/haskell-sig.202… Minutes (text): https://meetbot.fedoraproject.org/fedora-meeting/2020-07-21/haskell-sig.202… Log: https://meetbot.fedoraproject.org/fedora-meeting/2020-07-21/haskell-sig.202…

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Haskell SIG meeting 2020-07-07 minutes
by Jens-Ulrik Petersen 07 Jul '20

07 Jul '20

Minutes and log from today's meeting: Minutes: https://meetbot.fedoraproject.org/fedora-meeting/2020-07-07/haskell-sig.202… Minutes (text): https://meetbot.fedoraproject.org/fedora-meeting/2020-07-07/haskell-sig.202… Log: https://meetbot.fedoraproject.org/fedora-meeting/2020-07-07/haskell-sig.202…

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reminder of Haskell SIG meeting
by Jens-Ulrik Petersen 07 Jul '20

07 Jul '20

We will have the biweekly Haskell SIG meeting in #fedora-meeting 70min from now: at 13:00 UTC (ie 9am EDT, 3pm CEST). The main topic will be preparation work for Fedora 33. Anyone interested in Haskell on Fedora is welcome to join or listen in. Thanks, Jens

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haskell July 2020