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

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

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
_______________________________________________ web-devel mailing list web-devel@haskell.org http://www.haskell.org/mailman/listinfo/web-devel
-- Best regards, Cheshkov Anton Phone: +7 909 005 18 82 Skype: cheshkov_anton

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
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
_______________________________________________ web-devel mailing list web-devel@haskell.org http://www.haskell.org/mailman/listinfo/web-devel
-- Best regards, Cheshkov Anton Phone: +7 909 005 18 82 Skype: cheshkov_anton
_______________________________________________ web-devel mailing list web-devel@haskell.org http://www.haskell.org/mailman/listinfo/web-devel

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
_______________________________________________ web-devel mailing list web-devel@haskell.org http://www.haskell.org/mailman/listinfo/web-devel
-- Best regards, Cheshkov Anton Phone: +7 909 005 18 82 Skype: cheshkov_anton
_______________________________________________ web-devel mailing list web-devel@haskell.org http://www.haskell.org/mailman/listinfo/web-devel

anton@anton-laptop:~ $ ghc-pkg list wai-handler-devel
/usr/local/lib/ghc-7.0.3/package.conf.d
/home/anton/.ghc/i386-linux-7.0.3/package.conf.d
wai-handler-devel-0.4.0
How to detect right version of wai-handler-devel?
Thanks.
2011/4/26 Greg Weber
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
_______________________________________________ web-devel mailing list web-devel@haskell.org http://www.haskell.org/mailman/listinfo/web-devel
-- Best regards, Cheshkov Anton Phone: +7 909 005 18 82 Skype: cheshkov_anton
_______________________________________________ web-devel mailing list web-devel@haskell.org http://www.haskell.org/mailman/listinfo/web-devel
-- Best regards, Cheshkov Anton Phone: +7 909 005 18 82 Skype: cheshkov_anton

I get around the problem.
*anton@anton-laptop:~/projects/test $ mv config/Settings.hs .*
*anton@anton-laptop:~/projects/test $ mv config/StaticFiles.hs .*
*anton@anton-laptop:~/projects/test $
/home/anton/.cabal/bin/wai-handler-devel 3000 Controller withTest --yesod*
*Attempting to interpret your app...*
*Interpreting success, new app loaded*
*
*
*
*
Thanks.
*
*
2011/4/26 Anton Cheshkov
anton@anton-laptop:~ $ ghc-pkg list wai-handler-devel /usr/local/lib/ghc-7.0.3/package.conf.d /home/anton/.ghc/i386-linux-7.0.3/package.conf.d wai-handler-devel-0.4.0
How to detect right version of wai-handler-devel?
Thanks.
2011/4/26 Greg Weber
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
_______________________________________________ web-devel mailing list web-devel@haskell.org http://www.haskell.org/mailman/listinfo/web-devel
-- Best regards, Cheshkov Anton Phone: +7 909 005 18 82 Skype: cheshkov_anton
_______________________________________________ web-devel mailing list web-devel@haskell.org http://www.haskell.org/mailman/listinfo/web-devel
-- Best regards, Cheshkov Anton Phone: +7 909 005 18 82 Skype: cheshkov_anton
-- Best regards, Cheshkov Anton Phone: +7 909 005 18 82 Skype: cheshkov_anton
participants (3)
-
Anton Cheshkov
-
Greg Weber
-
vagif.verdi@gmail.com