On Thu, Jan 29, 2009 at 10:21:42PM +0000, Malcolm Wallace wrote:
On 29 Jan 2009, at 20:49, Ross Paterson wrote:
Hugs uses cpphs, but it has to build a dozen packages (including Cabal) before cpphs is available. Once it is, they're built again.
That strikes me as odd. The cpphs implementation deliberately has minimal dependencies - Haskell'98 libraries only, and no internal cpp (rather obviously). It should be possible to build cpphs first, before any package.
I realize that nhc98/yhc treat the Haskell 98 modules as primitive, but in the libraries shared by GHC and Hugs, the haskell98 package depends on 7 other packages. It's true that we could then run cpphs directly, but we need Cabal to build hsc2hs and everything else, and it needs 3 more.