[Haskell-cafe] Re: ANN: Takusen 0.8
alistair at abayley.org
Thu Mar 6 06:32:19 EST 2008
> > However, with ghci (which has a custom module loader and linker, I
> > think),
> > it seems to attempt to link all of the modules in the lib, and
> > this fails badly if you don;t have every back-end DBMS client
> > installed.
> > The only way I could find to fix that was to adjust the
> > build to only include modules that will link successfully (i.e. those
> > for which you have a DBMS client installed).
> I looked yesterday at a slightly nicer way of doing what you're already
> doing. We can use flags to turn on/off the various backends. What is
> tricky is doing that such that the default is chosen automagically.
To be fair, this is arguably ghci's fault. If the loader/linker in
ghci was more like gnu ld, then we could just build all of the
modules, and let the linker handle pulling in the optional bits. But I
have no idea if ghc HQ plan to fix it.
I don't know if there's another use case for this kind of behaviour
that would justify adding it to cabal.
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