Re: [Haskell-cafe] Panic loading network on windows (GHC 7.6.1)

Just to explain what's going on. It looks like you are compiling a module that uses template haskell, which in turn relies on GHCi bits. In particular, GHCi has a custom linker for loading compiled code. This linker is very fragile and tends to break whenever the platform GCC/linker changes. Similar issues happen a lot on OS X, because Apple tends to change their library formats on most major releases. The only workaround I can think of is to avoid using GHCi or Template Haskell, but I understand that's usually very tricky (especially if one of the dependencies uses TH). On 6 October 2012 09:57, Henk-Jan van Tuyl wrote:

On Fri, 05 Oct 2012 17:31:49 +0200, JP Moresmau wrote:

...

Hello, I've installed Cabal and cabal-install 1.16 (which required network) on a new GHC 7.6.1 install and everything went well, except now when building a package requiring network I get:

Loading package network-2.4.0.1 ... ghc.exe: Unknown PEi386 section name `.idata $4' (while processing: c:/ghc/ghc-7.6.1/mingw/lib\libws2_32.a) ghc.exe: panic! (the 'impossible' happened) (GHC version 7.6.1 for i386-unknown-mingw32): loadArchive "c:/ghc/ghc-7.6.1/mingw/lib\\libws2_32.a": failed

It's a GHC bug and will be solved in GHC 7.6.2, according to: http://hackage.haskell.org/trac/ghc/ticket/7103

Regards, Henk-Jan van Tuyl

-- http://Van.Tuyl.eu/ http://members.chello.nl/hjgtuyl/tourdemonad.html Haskell programming --

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