On 9/13/16 1:16 PM, Paolo Giarrusso wrote:
To clarify: I'm not proposing stack to install those GHCs, just to use
them.
I think the extra work would be limited (calling GHC-X.Y.Z instead of
GHC) and has other technical advantages
(https://github.com/commercialhaskell/stack/issues/2433). Mind you,
I'm willing to contribute the work and not asking anybody—I've just
been busy.
Right now I have to modify the PATH every time I use GHC 7.8.4 because
I needed to customize the build (I'm on OS X 10.11), but I still want
GHC 8 by default.
That reminds me: another thing I'd like to see (from either cabal or
stack) is better support for cross-compilation. Cabal supports
cross-compilation very poorly; you end up having to do ugly stuff like:
alias mcabal="cabal --with-ghc=x86_64-unknown-linux-musl-ghc
--with-ld=x86_64-unknown-linux-musl-ld
--with-gcc=x86_64-unknown-linux-musl-gcc
--with-ghc-pkg=x86_64-unknown-linux-musl-ghc-pkg"
and even then, it doesn't work with non-trivial packages.
As far as I know, stack doesn't support cross-compilation at all. (But
perhaps it's just not documented, or I've missed the documentation.)
--Patrick
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