On Wed, 2009-02-25 at 10:58 +0000, Neil Mitchell wrote: > Hi Duncan, > > >> i.e. cabal accepts the --builddir command, but the setup that cabal > >> builds doesn't. Why? > > > > Hmm. Does your ghc-6.8 have Cabal-1.6.0.2 registered? If you built > > Cabal-1.6.0.2 and cabal-install with ghc-6.10 but not also for 6.8 then > > cabal-install will be forced to pick an older Cabal lib when compiling > > Setup scripts for 6.8. > > Cabal-1.6.0.2 is registered and built with ghc-6.8.3 - I installed it > with Cabal seconds before running this example.
Did you see from the -v3 output what version it was actually using? If you compile Setup.hs manually using -package Cabal-1.6.0.2 does the --builddir= flag work? It should do. > My cabal.exe comes from the hackage website, the binary you put up > some time ago. I guess that is probably the issue. What version is that then? I'm interested because we've not actually worked out why the problem was occurring. > > Really of course we should notice this earlier and complain that we > > cannot use this new feature while using the older lib version. We should > > file a ticket about that. In fact the whole issue with what the Setup > > command line must accept is a tricky issue when it comes to working with > > custom build systems. > > Meh. Custom build scripts are brittle and evil - in my particular case > the custom build script was trivial so adding build-type:Simple fixes > everything. However, I'd like to know (before I push a change) that > build-type:Simple will work out the box with the Cabal that got > installed with ghc-6.8.3. It will. > So that means figuring out what Cabal ghc-6.8.3 shipped with, 1.2.3.0 > and which Cabal can cope with build-type:Simple - is there any way to > figure that out in general, and what is the answer in this specific > case? If you're lucky, "cabal check" will tell you that you're using features but not specifying a high enough cabal-version: >=x.y value. Otherwise you can consult old versions of the user guide or the source. Duncan _______________________________________________ cabal-devel mailing list [email protected] http://www.haskell.org/mailman/listinfo/cabal-devel
