On Thu, 2007-12-06 at 21:44 +0700, Peter Gammie wrote:
On 06/12/2007, at 6:56 PM, Duncan Coutts wrote:
On Thu, 2007-12-06 at 17:35 +0700, Peter Gammie wrote:
Can I humbly suggest that Cabal rely on very few external libraries?
We recently defined filepath to be a core library. As you point out however this does pose a problem for older compilers. Fortunately it's not that bad, you can build and install filepath using the older cabal that comes with your older compiler. If that's not possible for whatever reason you can download both Cabal and filepath and:
ghc -i../filepath --make Setup.lhs -o setup
I realise all this, I just wanted to log the fact that darcs-Cabal does not build on GHC 6.6. I thought it was a design goal for Cabal to compile on all GHCs back to 6.4.x (or something).
I have considered bundling filepath for exactly this reason. I'm still undecided.
Why is ghc-pkg looking only at globally-installed packages?
It's not ghc-pkg, it's Cabal that by default only looks at the global packages. You can configure with --user to have it look at the user ones. Personally I'm in favour of switching the default to --user. Of course it cannot use user packages and then install globally, and the current default prefix is /usr/local which is usually root only, so if we switch the default to user installs then we'd have to switch the default prefix. I'd prefer that too though. However it's a change that would require general consensus. Duncan