cabal update not working - haskell

I just did a fresh install of GHC 7.6.3, followed by installing the latest platform. But when I run cabal update, I get:
$ cabal --version
cabal-install version 1.16.0.2
using version 1.16.0 of the Cabal library
$ cabal update
Downloading the latest package list from hackage.haskell.org
cabal: <file descriptor: 8>: does not exist
What file descriptor is this referring to, and how can I fix this problem?
I've reported this issue on github but haven't gotten any help.

Related

Cabal claims it has updated itself but has not really

Following the instructions from this post on how to update cabal-install, I seemed to be able to install the latest version (or at least some version > 1.18, which is what I wanted.
$ cabal install Cabal cabal-install
Resolving dependencies...
Configuring cabal-install-1.22.6.0...
Building cabal-install-1.22.6.0...
Preprocessing executable 'cabal' for cabal-install-1.22.6.0...
<snip>
Linking dist/build/cabal/cabal ...
Installing executable(s) in /home/kavi/.cabal/bin
Installed cabal-install-1.22.6.0
However, when I tried cabal sandbox, it failed, so I checked cabal --version.
$ cabal --version
cabal-install version 1.16.0.2
using version 1.16.0 of the Cabal library
As you can see, the version is not the one that cabal claimed to install.
Adding ~/.cabal/bin to my path did nothing to help. (Yes, I did restart my terminal).
$ echo $PATH
<snip>:/home/kavi/.cabal/bin
$ cabal --version
cabal-install version 1.16.0.2
using version 1.16.0 of the Cabal library
I tried restarting my computer, but still:
$ cabal --version
cabal-install version 1.16.0.2
using version 1.16.0 of the Cabal library
I am using Ubuntu 14.04.

You should add /home/kavi/.cabal/bin to the beginning of the $PATH.
which cabal tells which executable shell will pick to execute, on my machine:
% echo $PATH
/Users/ogre/.local/bin:...
% which cabal
/Users/ogre/.local/bin/cabal

cabal update fails to download the archive file

I upgraded my Haskell platform to and copied the new cabal binary to my ~/.cabal/bin folder in my MacOS.
$ ghc --version
The Glorious Glasgow Haskell Compilation System, version 7.10.1
$ cabal --version
cabal-install version 1.22.2.0
using version 1.22.2.0 of the Cabal library
Now, when I try to update the package list, I get the following error:
$ cabal update
Downloading the latest package list from hackage.haskell.org
cabal: Failed to download
http://hackage.haskell.org/packages/archive/00-index.tar.gz : ErrorMisc "Error
HTTP code: 400"
I can download the 00-index.tar.gz file using my browser, but cabal fails to download it. What can be the problem?

Exit Code 11 installing Persistent (Yesod)

I'm trying to install Yesod on my Mac (running Mavericks), but installation fails because of an error installing Persistent. Specifically, cabal install persistent yields:
Failed to install persistent-1.3.0.2
Updating documentation index /Users/Max/Library/Haskell/doc/index.html
cabal: Error: some packages failed to install:
persistent-1.3.0.2 failed during the building phase. The exception was:
ExitFailure 11
(The full output is available as a gist)
I don't think this is an issue with conflicts, because I ran rm -rf ~/.ghc ~/.cabal before trying this (though I think 3 globally installed packages might not have been erased—unsure).
I'm using the latest Haskell Platform with the ghc-clang-wrapper script.
Cabal versions:
$ cabal --version
cabal-install version 1.16.0.2
using version 1.16.0 of the Cabal library
GHC version:
$ ghc --version
The Glorious Glasgow Haskell Compilation System, version 7.6.3

Reinstalling Haskell platform allowed me to install Persistent, but the real issue was that I needed to install gcc48. Installing this cleared everything up. https://stackoverflow.com/a/21285413/1176156

cabal can't read bytestring cabal file, with ghc 7.4.1

I just upgraded from GHC 7.2.2 to 7.4.1 on 32-bit linux. The install went fine, but cabal-install is not happy:
$ cabal update
Downloading the latest package list from hackage.haskell.org
$ cabal install repa
Resolving dependencies...
cabal: Couldn't read cabal file "bytestring/0.9.2.1/bytestring.cabal"
Here's the cabal version I'm running:
$ cabal --version
cabal-install version 0.10.2
using version 1.10.1.0 of the Cabal library
Thanks!

There's a workaround through here: http://www.haskell.org/pipermail/haskell-cafe/2012-February/099077.html

run this after you run cabal update:
tar -f ~/.cabal/packages/hackage.haskell.org/00-index.tar --delete bytestring/0.9.2.0
tar -f ~/.cabal/packages/hackage.haskell.org/00-index.tar --delete bytestring/0.9.2.1

Cabal installing quickcheck version problem

I'm trying to install quickcheck 2 via cabal on Ubuntu 10.04. No matter what I try to do, I always end up with the following:
$ cabal list quickcheck
* QuickCheck
Synopsis: Automatic testing of Haskell programs
Latest version available: 2.1.1.1
Latest version installed: 1.2.0.0
Homepage: http://www.cse.chalmers.se/~koen
License: BSD3
This is on a clean Ubuntu 10.04 with only the ghc6 and cabal-install apt packages installed. I had installed the binary package via cabal before trying to install quickcheck.
It tells me 2.1.1.1 is available, but it only ever installs 1.2.0.0. Why can't I get it to actually install the latest version?

$ cabal install --dry-run quickcheck
Resolving dependencies...
In order, the following would be installed (use -v for more details):
QuickCheck-1.2.0.0
I'm not sure why it chooses the old version, but you can just do:
$ cabal install --dry-run quickcheck-2.1
Resolving dependencies...
In order, the following would be installed (use -v for more details):
mtl-1.1.0.2
QuickCheck-2.1
You can be more specific in the version number, but you don't have to.

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