[haskell-llvm] LLVM and Cabal 18.104.22.168
uzytkownik2 at gmail.com
Sun Dec 12 09:07:04 EST 2010
On Sun, 2010-12-12 at 14:57 +0100, Henning Thielemann wrote:
> On Sun, 12 Dec 2010, Maciej Piechotka wrote:
> > Using documentation and doing some testing I baked such patch.
> Is testing for the GHC version with a CPP macro the right thing? What if I
> use Cabal-1.10 with GHC-6.10?
I belive that the test already was done by checking GHC version. Also
does cabal 1.10 build against ghc 6.10?
On Sun, 2010-12-12 at 14:55 +0100, Henning Thielemann wrote:
On Sun, 12 Dec 2010, Maciej Piechotka wrote:
> > On Sun, 2010-12-12 at 12:22 +0100, Henning Thielemann wrote:
> >> On Sun, 12 Dec 2010, Maciej Piechotka wrote:
> >>> About recent problems with building LLVM with GHC-7 + Cabal
> >>> After changin the offending lines to:
> >>> packageDb = case flagToList (regPackageDB regFlags) of
> >>>  -> [GlobalPackageDB,
> >>> registrationPackageDB (withPackageDB
> >>> xs -> xs
> >>> everything seems to be OK (in one settings).
> >> This would work with GHC-6.10.4, too. However using 'flagToMaybe'
> >> closer to what is currently in Setup.hs:
> >> packageDb = case flagToMaybe (regPackageDB regFlags) of
> >> Just db -> db
> >> Nothing -> [GlobalPackageDB,
> >> registrationPackageDB
> >> I don't know anything about the implications.
> > Main implication is that it does not type check with Cabal 22.214.171.124
> > imagine:
> I see. It is not just, that GlobalPackageDB must be added for
> but something else has changed, too. However I cannot figure out a
> difference in flagToMaybe, flagToList, and regPackageDB.
flagToList works the same as flagToMaybe. i.e.
Just x <-> [x]
Nothing <-> 
Flag cannot contain many values
Flag cannot contain many packages.
regPackageDb gets Flag of package database llvm is suppose to register
to from RegisterFlags.
> Do you know, what has changed?
No. I don't know Cabal very well. It was tested rather as builds or not.
> Anyway, I have pushed your patch to llvm repository.
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