Thank you. I'm using GHC 6.8.2. I can't see ghc-options in the file /root/.cabal/config, am I looking in the right place?
Ben On Wed, Mar 24, 2010 at 1:30 AM, Ivan Miljenovic <ivan.miljeno...@gmail.com>wrote: > On 24 March 2010 16:26, Ben Derrett <ben.derr...@googlemail.com> wrote: > > cabal install cgi > > Resolving dependencies... > > Configuring MonadCatchIO-mtl-0.3.0.0... > > Preprocessing library MonadCatchIO-mtl-0.3.0.0... > > Building MonadCatchIO-mtl-0.3.0.0... > > [1 of 1] Compiling Control.Monad.CatchIO ( Control/Monad/CatchIO.hs, > > dist/build/Control/Monad/CatchIO.o ) > > Control/Monad/CatchIO.hs:146:34: > > Illegal signature in pattern: E.SomeException > > Interesting.... the code is obviously using extensible-exceptions but > it doesn't seem to work. What version of GHC are you using? > > > > Use -XPatternSignatures to permit it > > cabal: Error: some packages failed to install: > > MonadCatchIO-mtl-0.3.0.0 failed during the building phase. The exception > > was: > > exit: ExitFailure 1 > > cgi-3001.1.8 depends on MonadCatchIO-mtl-0.3.0.0 which failed to install. > > So, I modified my /root/.cabal/config with: > > -- flags: -XPatternSignatures > > Nah, that's a GHC flag not a Cabal/cabal-install flag, so you'd have > to edit the .cabal file to add that in (where it says ghc-options). > > > -- > Ivan Lazar Miljenovic > ivan.miljeno...@gmail.com > IvanMiljenovic.wordpress.com > -- Ben Derrett Department of Mathematics MIT Class of 2012 bderr...@mit.edu
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