Hi Andy, On Sep 15, 2010, at 4:30, Andy Stewart wrote:
> Hi Axel, > > Have many people at #haskell ask me why 'gtk' package can't install > successful. > At last, i found they're not install gtk2hs-buildtools. > > Most people won't read gtk2hs manual, just do "cabal install gtk" and > expect everything fine, and *many* people just think below error is > fault of 'gtk' and give up to install: > > ------------------------------> error start > <------------------------------ > Resolving dependencies... > Configuring gtk-0.11.2... > setup: gtk2hsC2hs is required but it could not be found. > setup: ./gtk.cabal has been changed, please re-configure. > Resolving dependencies... > Configuring gtk-0.11.2... > setup: gtk2hsC2hs is required but it could not be found. > cabal: Error: some packages failed to install: > gtk-0.11.2 failed during the configure step. The exception was: > ExitFailure 1 > ------------------------------> error end > <------------------------------ > > Currently, is two ways fix this problem: > > 1) Buid dummy module let 'gtk' depend, perhaps you don't like this > ugly > way. :) > a) gtk2hs-buildtools would have to install a dummy library a) then a program that builds on gtk would always install this library, which is unnecessary b) this doesn't work because e.g. gtk2hsC2hs is used before libraries, that gtk depends on, are checked for > 2) We search gtk2hsC2hs in PATH, if not found, print below > information: > "Please install package 'gtk2hs-buildtools' first or make sure > $HOME/.cabal in your PATH". > > Then user at least know he need install gtk2hs-buildtools first. > We could do this, although this would duplicated parts of the Cabal code. > What do you think? Do you want to look into that? It probably boils down to overriding a hook that manually executes the functions to checks the existence of say gtk2hsC2hs. If that can't be found you abort with a better error message. I could perhaps do this, but not in the near future as I'm travelling for another week. Cheers, Axel > > -- Andy > > > > ------------------------------------------------------------------------------ > Start uncovering the many advantages of virtual appliances > and start using them to simplify application deployment and > accelerate your shift to cloud computing. > http://p.sf.net/sfu/novell-sfdev2dev > _______________________________________________ > Gtk2hs-devel mailing list > Gtk2hs-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/gtk2hs-devel ------------------------------------------------------------------------------ Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev _______________________________________________ Gtk2hs-devel mailing list Gtk2hs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gtk2hs-devel
