[Haskell-beginners] latest Haskell Platform build fails

[Mateusz Kowalczyk]

On 10/15/2014 06:55 PM, Michael L Martin wrote:
> Hello all,
> 
> I am trying to install the latest version of Haskell Platform and am 
> having a problem.
> 
> I created a new VM and installed Ubuntu 14.04 server and applied the 
> latest updates. Also installed packages
> "build-essential" and "zlib1g-dev".
> 
> I then downloaded and installed ghc-7.8.3 from 
> https://www.haskell.org/ghc/download_ghc_7_8_3#x86_64linux
> and then downloaded and installed cabal 1.20.0.3 from 
> http://hackage.haskell.org/package/cabal-install.
> 
> After installing cabal, I did a "cabal update" followed by "cabal 
> install hscolour".
> 
> Then downloaded the latest Haskell Platform tarball 
> (haskell-platform-2014.2.0.0-srcdist.tar.gz) and attempted to
> install like this:
> 
> ./platform.sh ../ghc-7.8.3-x86_64-unknown-linux-deb7.tar.bz2
> 
> This fails like this:
> 
> ***
> *** Building hptool
> ***
> Building hptool-0.1...
> Preprocessing executable 'hptool' for hptool-0.1...
> ***
> *** Running hptool
> ***
> # rm (for 
> build/.markers/rel/build/target/usr/local/haskell/ghc-7.8.3-x86_64/lib/happy-1.19.4)
> # rm (for build/.markers/rel/build/package/happy-1.19.4/build)
> happy-1.19.4 needs mtl-2.1.3.1
>  >>> Building happy-1.19.4
> # cp (for build/.markers/rel/build/package/happy-1.19.4/build)
> # rm (for build/.markers/rel/build/package/happy-1.19.4/build)
> # ghc-pkg (for build/.markers/rel/build/package/happy-1.19.4/build)
> # ghc-pkg (for build/.markers/rel/build/package/happy-1.19.4/build)
> Reading package info from "build/package/mtl-2.1.3.1/inplace.conf" ... done.
> mtl-2.1.3.1: package(s) with this id already exist: mtl-2.1.3.1
> Error when running Shake build system:
> * build-all
> * build-product
> * build/product/haskell-platform-2014.2.0.0-unknown-posix-x86_64.tar.gz
> * build/target
> * 
> build/.markers/rel/build/target/usr/local/haskell/ghc-7.8.3-x86_64/lib/happy-1.19.4
> * build/.markers/rel/build/package/happy-1.19.4/build
> Development.Shake.command, system command failed
> Command: 
> /home/mmartin/Downloads/haskell-platform-2014.2.0.0/build/ghc-bindist/local/bin/ghc-pkg 
> register --package-db=build/package/happy-1.19.4/package.conf.d 
> --verbose=1 build/package/mtl-2.1.3.1/inplace.conf
> Exit code: 1
> Stderr:
> mtl-2.1.3.1: package(s) with this id already exist: mtl-2.1.3.1
> 
> Any suggestions on how to get past this?
> 
> Thanks,
> Michael Martin
> 
> _______________________________________________
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> http://www.haskell.org/mailman/listinfo/beginners
> 

Merely going from the error message and your steps, it seems to me that
you're *not* meant to install GHC yourself first and that the platform
ships with GHC. I would say try again but without installing GHC and
cabal first.


-- 
Mateusz K.