Cabal woes
Oleg Grenrus
oleg.grenrus at iki.fi
Mon Apr 15 22:22:15 UTC 2019
cabal-install-3 isn't released. Please check the facts.
- Oleg
On 16.4.2019 1.17, Brandon Allbery wrote:
> I vaguely recall seeing that bug come up with respect to v2-install.
> And in fact am a bit surprised that 3 has been released, since this is
> highlighting that neither it nor the Haskell ecosystem is quite ready
> for it.
>
> I'd also have expected (and thought I'd seen) "cabal install" in
> recent 2.x warn that it would be "v1-install" in the future.
>
> On Mon, Apr 15, 2019 at 6:13 PM Simon Peyton Jones
> <simonpj at microsoft.com <mailto:simonpj at microsoft.com>> wrote:
>
> Aha! That works. I would never in a million years have found
> that by myself. Thank you.
>
> But
>
> * It is terribly mysterious that “cabal install hspec” doesn’t,
> well, install hspec.
> * It must surely be a bug that “cabal install –lib hspec” simply
> crashes.
>
> Simon
>
> *From:*Brandon Allbery <allbery.b at gmail.com
> <mailto:allbery.b at gmail.com>>
> *Sent:* 15 April 2019 23:03
> *To:* Simon Peyton Jones <simonpj at microsoft.com
> <mailto:simonpj at microsoft.com>>
> *Cc:* ghc-devs at haskell.org <mailto:ghc-devs at haskell.org>
> *Subject:* Re: Cabal woes
>
> Yes, I think a lot of documentation will need to be updated
> because this. You want "cabal v1-install" with cabal 3.
>
> On Mon, Apr 15, 2019 at 6:00 PM Simon Peyton Jones
> <simonpj at microsoft.com <mailto:simonpj at microsoft.com>> wrote:
>
> Thanks. But alas I have no clue about whether I want a
> v1-install or a v2-install, nor how to achieve them if I knew
> what they were. I just want to install ‘hspec’ so that I can
> use it when compiling a program. How would I do that?
>
> The instructions here https://wiki.haskell.org/Cabal-Install
> <https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwiki.haskell.org%2FCabal-Install&data=02%7C01%7Csimonpj%40microsoft.com%7C9dba03cd18af405d806208d6c1ee1601%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636909625657350786&sdata=81SaQYxWkpF9nYalL%2B%2FSCbcGMMkYsMnFnpylDncDXu0%3D&reserved=0>
> just say “cabal install hspec” which is what I tried. Those
> instructions are pointed to from here
> https://wiki.haskell.org/Cabal/How_to_install_a_Cabal_package
> <https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwiki.haskell.org%2FCabal%2FHow_to_install_a_Cabal_package&data=02%7C01%7Csimonpj%40microsoft.com%7C9dba03cd18af405d806208d6c1ee1601%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636909625657350786&sdata=ougOkZ0Dd%2Fep%2FshvVChLiGb9MEhEOW1sYxGnK8KJ8ww%3D&reserved=0>,
> which in turn are pointed to from the main Cabal home page
> https://www.haskell.org/cabal/
> <https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.haskell.org%2Fcabal%2F&data=02%7C01%7Csimonpj%40microsoft.com%7C9dba03cd18af405d806208d6c1ee1601%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636909625657360794&sdata=I1SnV%2F4c2d05K39NLK%2FQ%2BLdfRoGRRCcKIGXHkNKMGH8%3D&reserved=0>.
>
> I must be missing something.
>
> Simon
>
> *From:*Brandon Allbery <allbery.b at gmail.com
> <mailto:allbery.b at gmail.com>>
> *Sent:* 15 April 2019 22:54
> *To:* Simon Peyton Jones <simonpj at microsoft.com
> <mailto:simonpj at microsoft.com>>
> *Cc:* ghc-devs at haskell.org <mailto:ghc-devs at haskell.org>
> *Subject:* Re: Cabal woes
>
> I think you wanted v1-install to install a library into the
> user package database, since your cabal is 3.x and the v2-*
> commands are now the default (that is, you did what used to be
> cabal new-install or cabal v2-install).
>
> On Mon, Apr 15, 2019 at 5:47 PM Simon Peyton Jones via
> ghc-devs <ghc-devs at haskell.org <mailto:ghc-devs at haskell.org>>
> wrote:
>
> I’m trying to install ‘hspec’ on my WSL (Windows subsystem
> for Linux) system.
>
> But I fail; see below.
>
> For some reason cabal complains about installing a
> library. (That seems peculiar – isn’t that what cabal is
> for?) But it helpfully suggests adding –lib.
>
> Alas, cabal then crashes outright, which should never happen.
>
> So I’m stuck. What should I do?
>
> Thanks
>
> Simon
>
> simonpj at MSRC-9870733:~$ cabal --version
>
> cabal-install version 3.0.0.0
>
> compiled using version 3.0.0.0 of the Cabal library
>
> simonpj at MSRC-9870733:~$ cabal install hspec
>
> Resolving dependencies...
>
> Up to date
>
> Warning: You asked to install executables, but there are
> no executables in
>
> target: hspec. Perhaps you want to use --lib to install
> libraries instead.
>
> simonpj at MSRC-9870733:~$ cabal install --lib hspec
>
> Resolving dependencies...
>
> Up to date
>
> Distribution/Simple/GHC.hs:1959:5-56: Irrefutable pattern
> failed for pattern Just ghcPkgProg
>
> simonpj at MSRC-9870733:~$ which ghc
>
> /opt/ghc/bin/ghc
>
> simonpj at MSRC-9870733:~$ which ghc-pkg
>
> /opt/ghc/bin/ghc-pkg
>
> simonpj at MSRC-9870733:~$
>
> _______________________________________________
> ghc-devs mailing list
> ghc-devs at haskell.org <mailto:ghc-devs at haskell.org>
> http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs
> <https://nam06.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmail.haskell.org%2Fcgi-bin%2Fmailman%2Flistinfo%2Fghc-devs&data=02%7C01%7Csimonpj%40microsoft.com%7C9dba03cd18af405d806208d6c1ee1601%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636909625657370807&sdata=3IAzng%2BFJbdlxyhT4atnSCCbfEmsOHHtsPNpA4e95ew%3D&reserved=0>
>
>
> --
>
> brandon s allbery kf8nh
>
> allbery.b at gmail.com <mailto:allbery.b at gmail.com>
>
>
> --
>
> brandon s allbery kf8nh
>
> allbery.b at gmail.com <mailto:allbery.b at gmail.com>
>
>
>
> --
> brandon s allbery kf8nh
> allbery.b at gmail.com <mailto:allbery.b at gmail.com>
>
> _______________________________________________
> ghc-devs mailing list
> ghc-devs at haskell.org
> http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.haskell.org/pipermail/ghc-devs/attachments/20190416/e6eee99c/attachment-0001.html>
More information about the ghc-devs
mailing list