Re: [arch-haskell] ghc-vis

On Tue, Oct 13, 2015 at 07:45:52AM -0600, stef204 wrote:

13.10.2015, 06:44, "Magnus Therning" :

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The package `haskell-graphviz` is no longer in [haskell-core]. Right now I can't recall why I removed it, but most likely it was a lack of upstream updates resulting in other packages being kept back.

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 During 'cabal install ghc-vis --disable-library-profiling' several  libraries fail with messages:

 failed to install glib-0.12.5.4  Build log ( /home/($user)/Documents/hs/hswork/projects/101/.cabal-sandbox/logs/glib-0.12.5.4.log ):  Failed to install cairo-0.12.5.3  Build log ( /home/($user)/Documents/hs/hswork/projects/101/.cabal-sandbox/logs/cairo-0.12.5.3.log ):

When installing `haskell-gtk` you should have gotten `haskell-glib` and `haskell-cairo` too (as well as `haskell-pango`). `cabal` ought to have picked that up.

Yes, I did--but cabal does not seem to pick it up. I am thinking it is because I am trying to install ghc-vis in a sandbox and cabal is not seeing the other packages installed via haskell-core with pacman but if I understand you correctly, this should not the case. Correct or incorrect?

The little experience I have with cabal sandboxes suggest that it should pick them up -- as long as they have acceptable versions!

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Personally I'm so familiar with the tools we se for [haskell-core] that I often build proper Arch packages for everything :)

I would love to do that as well but am so new to this whole haskell/cabal issue that not so easy to take the plunge, while trying to focus on learning the basics or haskell....

I saw some info about cblrepo which didn't sound very encouraging to someone just starting out: http://funloop.org/post/2014-01-06-using-cblrepo-in-arch-linux.html

That post completely misses the fact that there already is a base DB to use: https://github.com/archhaskell/habs/. I you clone that you'll only need to add the packages beyond what's already in [haskell-core].

How would I go about building the Arch package before installing it...?

1. clone https://github.com/archhaskell/habs/ 2. install `cblrepo` from [haskell-core] 3. run `cblrepo sync` 4. move into the `habs` repo and run `cblrepo add ...` to add packages (one or many at once) 5. run `cblrepo pkgbuild <pkgs>` to generate source packages for the packages you added 6. build all packages, in order (you can use `cblrepo build` to generate a good build order) 7. install your new packages

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I've lately had a closer look at `stack` (available in [haskell-core] as `haskell-stack-bin`) and if ghc-vis produces one or more binaries (i.e. no libs that you are interested in) then it might be a good way to build it.

Can you please explain in more detail what you mean by that exactly? How would I go about it? 1) pacman -S haskell-stack-bin 2) then? How do I find out if "ghc-vis produces one or more binaries"?

I'd start with `stack unpack ghc-vis`, then `stack init --resolver ghc-7.8` and see where that leads. /M -- Magnus Therning OpenPGP: 0xAB4DFBA4 email: magnus@therning.org jabber: magnus@therning.org twitter: magthe http://therning.org/magnus I would rather use Java than Perl. And I'd rather be eaten by a crocodile than use Java. -- Trouser