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Haskell-platform currently has unmet dependencies on Ubuntu 11.04. This is a known bug, but I'd like to get it installed sooner rather than later.

Can anyone recommend a way to install haskell-platform on 11.04? The bug report that I linked to offers a solution that requires editing a binary package (?) using vim, but I'd rather install something from source than go that route.

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5 Answers

up vote 2 down vote accepted

This bug has now been fixed and is in 11.04 -proposed. Therefor you can enable proposed packages and install haskell-platform. If you do not want to keep getting -proposed updates you can disable it once you have haskell-platform installed. Look here for a guide on how to enable -proposed updates.

This bug is fixed in 11.10.

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up vote 2 down vote

I am afraid you are out of options for the moment besides compiling it yourself (but editing the package seems alot less problematic).

Either you edit var/cache/apt/pkgcache.bin as shown at comment #12 in the bug or you will have to wait until all the problems have been ironed out for using the Haskell platform on Ubuntu 11.04

I would go with editing the package. It is not that difficult and I expect you to be able to do that without any problem.

edit: now I am on my own machine.

cd /var/cache/apt/
sudo cp pkgcache.bin pkgcache.backup.bin
sudo cp pkgcache.bin pkgcache.test.bin
sudo vi pkgcache.test.bin
enter
/6.12.1+

This will result in:

009fe21547b0cc8fc2f7ee1ec74d3e27^@haskell-http-doc^@1:2^@libghc6-http-
doc^@^@009fe21547b0cc8fc2f7ee1ec74d3e27^@2.7.0-
2^@xemacs22^@^@b8b7ecd2f37fbc271d0108a704c42056^@haskell-pcre-light-doc^@1:2^@libghc6-
pcre-light-doc^@^@009fe21547b0cc8fc2f7ee1ec74d3e27^@haskell-
platform^@2010.1.0.0.1^@6.12.1^@6.12.1+^@libghc6-cgi-dev^

See the 6.12.1 at the bottom?

Navigate with the arrow keys to the 1 of .1+ When on the 1 hit r 4 :wq!

That's the practise run. Remove the .test from the sudo vi pkgcache.test.bin to change the real file. After that install it in the normal way.

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Hi Rinzwind, I know that you were the one who edited the package. Have you been using Haskell since installing in that way, and have you encountered any problems with Haskell as a result? – j1mc May 23 '11 at 15:51
@j1mc no I have not. I editted in the commands you need to use to edit the pkgcache.bin I think I did it correctly. Have a try yourself. If it gets you haskell working please leave feedback ;) – Rinzwind May 23 '11 at 17:13
This worked for me, errored on the post-install script as the original bug said. – Brian Hicks Jul 11 '11 at 17:24
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up vote 1 down vote

Try compiling it from source - http://hackage.haskell.org/platform/linux.html

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I gave the "compile it from source" option a try, and things have been fine so far. Thanks to all who replied. – j1mc May 23 '11 at 20:20
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up vote 1 down vote

You can install it from the following PPA: https://launchpad.net/~brcha/+archive/ppa
Here's how:

sudo add-apt-repository ppa:brcha/ppa
sudo apt-get install haskell-platform

Voila!

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First, python-software-properties must be installed. sudo apt-get install python-software-properties. Second, after the ppa repository is added, the package list must be updated. sudo apt-get update. Third, the brcha repository is currently down, so sudo apt-get update fails to find the brcha package list and sudo apt-get install haskell-platform fails to find haskell-platform. Maybe there's another ppa repository that does work for Haskell Platform. – mcandre Dec 30 '11 at 15:00
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up vote 0 down vote

I'm running a small Haskell course right now and I've created Natty Live CDs for the course participants. What I've done is add all the packages I needed(and which would go with the platform anyway) without the haskell-platform package. Everything else I needed, I installed with cabal-install.

This may not be the perfect solution but it works for me.

Shipping a broken package was very lame.

Hope this helps.

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Ditto. yellosoft.us/gak – mcandre Dec 30 '11 at 15:00
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