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
<simo...@microsoft.com <mailto:simo...@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 <allber...@gmail.com
<mailto:allber...@gmail.com>>
*Sent:* 15 April 2019 23:03
*To:* Simon Peyton Jones <simo...@microsoft.com
<mailto:simo...@microsoft.com>>
*Cc:* ghc-devs@haskell.org <mailto:ghc-devs@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
<simo...@microsoft.com <mailto:simo...@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 <allber...@gmail.com
<mailto:allber...@gmail.com>>
*Sent:* 15 April 2019 22:54
*To:* Simon Peyton Jones <simo...@microsoft.com
<mailto:simo...@microsoft.com>>
*Cc:* ghc-devs@haskell.org <mailto:ghc-devs@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@haskell.org <mailto:ghc-devs@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@MSRC-9870733:~$ cabal --version
cabal-install version 3.0.0.0
compiled using version 3.0.0.0 of the Cabal library
simonpj@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@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@MSRC-9870733:~$ which ghc
/opt/ghc/bin/ghc
simonpj@MSRC-9870733:~$ which ghc-pkg
/opt/ghc/bin/ghc-pkg
simonpj@MSRC-9870733:~$
_______________________________________________
ghc-devs mailing list
ghc-devs@haskell.org <mailto:ghc-devs@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
allber...@gmail.com <mailto:allber...@gmail.com>
--
brandon s allbery kf8nh
allber...@gmail.com <mailto:allber...@gmail.com>
--
brandon s allbery kf8nh
allber...@gmail.com <mailto:allber...@gmail.com>
_______________________________________________
ghc-devs mailing list
ghc-devs@haskell.org
http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs
_______________________________________________
ghc-devs mailing list
ghc-devs@haskell.org
http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs
