On Sat, Nov 27, 2010 at 6:59 PM, Jinjing Wang
Dear list,
From ghc 7.0.1 release notes:
The Language.Haskell.TH.Quote.QuasiQuoter type has two new fields: quoteType and quoteDec.
Some of my code needs to be conditionally compiled to support both version 6 and 7, what is the recommended way to do it?
ref:
* http://new-www.haskell.org/ghc/docs/7.0.1/html/users_guide/release-7-0-1.htm...
Hi Jinjing, I've done this in Yesod. I'm not sure if it's the best way, but basically I've added a ghc7 flag to the cabal file, and a block for the library that reads: if flag(ghc7) build-depends: base >= 4.3 && < 5 cpp-options: -DGHC7 else build-depends: base >= 4 && < 4.3 Then whenever I want to quasi-quote in the code, I write: #if GHC7 [quasiquoter| #else [$quasiquoter| #endif Michael