On Wed, 12 May 2010 19:51:24 +0300

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"Michael" == Michael Snoyman wrote:

Michael> The first three tutorials are properly commented; the last two Michael> are mostly just code. I have not ported over any of my Michael> open-source web apps to Yesod 0.2 yet, so most complex Michael> examples are not available at the moment. OK. We're waiting for bloggy. ;) Sincerely, Gour -- Gour | Hlapicina, Croatia | GPG key: F96FF5F6 ----------------------------------------------------------------

Sorry, things are still in a little bit of flux as I change underlying libraries. The only suggestion I've got is to retry with a "git pull && cabal update && cabal install". When the final version is actually released, it will be well-tested first. Note: right now it depends on web-routes-quasi 0.3.0, which has not yet been released, so you'll have to pull that from the github repo. Michael On Sat, May 22, 2010 at 7:32 AM, James Britt wrote:

Michael Snoyman wrote:

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Hi all,

I believe my 0.2 branch of Yesod[1] is feature-complete for this release, and it seems to be fairly stable. The documentation on it[2] give a good introduction, and hopefully the haddocks will fill in the gaps.

james@james06:~/data/vendor/yesod$ runhaskell Setup.lhs configure --user Configuring yesod-0.2.0... Warning: This package indirectly depends on multiple versions of the same package. This is highly likely to cause a compile failure. package http-wget-0.6.2 requires transformers-0.1.4.0 package control-monad-attempt-0.3.0 requires transformers-0.1.4.0 package authenticate-0.6.2 requires transformers-0.1.4.0 package yesod-0.2.0 requires transformers-0.2.1.0 package MonadCatchIO-transformers-0.2.2.0 requires transformers-0.2.1.0

$ghc --version The Glorious Glasgow Haskell Compilation System, version 6.12.1

This on Ubuntu 8.04

Running

$ runhaskell Setup.lhs build

fails:

[12 of 14] Compiling Yesod.Helpers.Auth ( Yesod/Helpers/Auth.hs, dist/build/Yesod/Helpers/Auth.o )

Yesod/Helpers/Auth.hs:187:25: Could not deduce (transformers-0.1.4.0:Control.Monad.Trans.MonadIO (GHandler Auth master)) from the context () arising from a use of `OpenId.getForwardUrl' at Yesod/Helpers/Auth.hs:187:25-57 Possible fix: add (transformers-0.1.4.0:Control.Monad.Trans.MonadIO (GHandler Auth master)) to the context of the type signature for `getOpenIdForward' or add an instance declaration for (transformers-0.1.4.0:Control.Monad.Trans.MonadIO (GHandler Auth master)) In the second argument of `($)', namely `OpenId.getForwardUrl oid complete' In a stmt of a 'do' expression: res <- runAttemptT $ OpenId.getForwardUrl oid complete In the expression: do { testOpenId; rr <- getRequest; oid <- case getParams rr "openid" of { [x] -> return x _ -> invalidArgs [...] }; render <- getUrlRender; .... }

Yesod/Helpers/Auth.hs:200:25: Could not deduce (transformers-0.1.4.0:Control.Monad.Trans.MonadIO (GHandler Auth master)) from the context (YesodAuth master) arising from a use of `OpenId.authenticate' at Yesod/Helpers/Auth.hs:200:25-49 Possible fix: add (transformers-0.1.4.0:Control.Monad.Trans.MonadIO (GHandler Auth master)) to the context of the type signature for `getOpenIdComplete' or add an instance declaration for (transformers-0.1.4.0:Control.Monad.Trans.MonadIO (GHandler Auth master)) In the second argument of `($)', namely `OpenId.authenticate gets'' In a stmt of a 'do' expression: res <- runAttemptT $ OpenId.authenticate gets' In the expression: do { testOpenId; rr <- getRequest; let gets' = reqGetParams rr; res <- runAttemptT $ OpenId.authenticate gets'; .... }

Suggestions?

Thanks,

James

--

Neurogami - Smart application development

http://www.neurogami.com

james@neurogami.com

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Unfortunately, it really does require 6.12. The issue is that we need to automatically generate a type instance for "Routes". While 6.10 supports type instances, it doesn't include that support in the template haskell. If people are interested, I think it would be possible to make the Routes type instance dependent upon the template-haskell version number, and then users would need to declare it themselves. By the way, I actually just released web-routes-quasi 0.3.0. Michael On Sun, May 23, 2010 at 12:44 AM, Arie Peterson wrote:

On Sat, 22 May 2010 20:42:51 +0300, Michael Snoyman wrote:

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Note: right now it depends on web-routes-quasi 0.3.0, which has not yet been released, so you'll have to pull that from the github repo.

In order to test my proposed solution (see below), I tried building web-routes-quasi 0.3.0 from git, but I get another cabal version conflict failure:

| Resolving dependencies... | cabal: cannot configure template-haskell-2.4.0.1. It requires base >=4.2 && <5 | For the dependency on base >=4.2 && <5 there are these packages: base-4.2.0.0 | and base-4.2.0.1. However none of them are available. | base-4.2.0.0 was excluded because of the top level dependency base -any | base-4.2.0.1 was excluded because of the top level dependency base -any

I assume this means that it needs ghc 6.12 (which I haven't installed yet). Do you really need template-haskell-2.4.*, or would 2.3.* suffice as well? In that case you could relax the version constraint.

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On Sat, May 22, 2010 at 7:32 AM, James Britt wrote:

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james@james06:~/data/vendor/yesod$ runhaskell Setup.lhs configure --user Configuring yesod-0.2.0... Warning: This package indirectly depends on multiple versions of the same package. This is highly likely to cause a compile failure. package http-wget-0.6.2 requires transformers-0.1.4.0 package control-monad-attempt-0.3.0 requires transformers-0.1.4.0 package authenticate-0.6.2 requires transformers-0.1.4.0 package yesod-0.2.0 requires transformers-0.2.1.0 package MonadCatchIO-transformers-0.2.2.0 requires transformers-0.2.1.0

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Suggestions?

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From a quick look at the source of yesod, it /seems/ that it may work with MonadCatchIO-transformers-0.1.* as well. Is there any reason yesod asks for =0.2.2 ? If not, relaxing this version constraint might fix things.

Regards,

Arie

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