Re: [web-devel] Yesod devel error: Yesod: panic! System/Plugins.hs:(84, 14)-(86, 29): Non-exhaustive patterns in lambda

Thank you! Wonderful news. I thought it's gone. On Monday, April 25, 2011 09:51:29 PM you wrote:

Hi all,

You should still be able to still use the old wai-handler-devel

Greg Weber

On Mon, Apr 25, 2011 at 9:33 PM, Anton Cheshkov wrote:

...

I have the same problem. It was stop all my work.

2011/4/26

Completely fresh install of yesod 0.8

...

I migrated my application successfully. It builds and works fine.

But when trying yesod devel i get this error:

yesod: panic! (the 'impossible' happened)

(GHC version 7.0.2 for x86_64-unknown-linux): System/Plugins.hs:(84,14)-(86,29): Non-exhaustive patterns in

lambda

Also cabal gives me following warning on configure:

Warning: This package indirectly depends on multiple versions of the same package. This is highly likely to cause a compile failure. package haskell-src-meta-0.3 requires syb-0.2.2 package aeson-0.3.2.4 requires syb-0.3

Not sure if its related to the error in any way, but it does not affect the build, and my executable works fine.

Cheers, Vagif Verdi

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-- Best regards, Cheshkov Anton Phone: +7 909 005 18 82 Skype: cheshkov_anton

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