On Sat, Oct 24, 2015 at 10:00 AM, Herbert Valerio Riedel
On 2015-10-24 at 15:05:44 +0200, Thomas Tuegel wrote:
[...]
MIN_VERSION_base is defined by Cabal, so it is not available during bootstrapping.
yes, and that's why we have a cabal_macros_boot.h in GHC's build-system for bootstrapping purposes,
http://git.haskell.org/ghc.git/blob/HEAD:/utils/ghc-cabal/cabal_macros_boot....
There is also the case of bootstrapping outside of GHC. For the sake of distro packagers, one should be able to run: $ runhaskell Setup.hs configure $ runhaskell Setup.hs build $ runhaskell Setup.hs install from an unpacked Cabal tarball, outside the GHC tree, and without any special options. It's worth discussing if we want to continue to support that mode of installation.
Moreover, Edward has a patch for GHC to have native MIN_VERSION_... support in GHC:
That's good to know! I look forward to its inclusion. -- Thomas Tuegel