[Haskell-cafe] Building recent Cabal/cabal-install

Mateusz Kowalczyk fuuzetsu at fuuzetsu.co.uk
Thu Aug 29 06:08:21 CEST 2013

Greetings café,

There are some problems in Haddock to do with Template Haskell that I
believe are being caused by Cabal. These were apparently addressed in
1.18 which came out recently. ‘Great!’, I thought.

My problem is that I'm unsure how to use 1.18. I'm using GHC HEAD (well,
3 days old now) which is meant to come with Cabal 1.18 (the library) and
in fact it seems to ship with it. Running ‘cabal --version’ however:

> cabal-install version 1.17.0
> using version 1.17.0 of the Cabal library

I'm unsure how to get it to use 1.18. I tried to build cabal-install
from git but that just complains about dependencies not being possible
to resolve: it depends on HTTP which depends on base <4.7 but 4.7 comes
with GHC HEAD!

I am baffled as to how I should go about using 1.18 and would love to
hear from some people who have this up and running.
Mateusz K.

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