On 12-07-04 10:58 AM, Yves Parès wrote:
the package http://hackage.haskell.org/package/haskelldb-hdbc-mysql/ the use of HDBC <2.3.0 I'm using cabal-install 0.14, and with a fresh install (no packages already installed), cabal-install tries to install HDBC-2.1.1 instead of, say, HDBC-2.2.7.0.
HDBC 2.2.* all want time>=1.1.2.4 && <=1.2.0.3, GHC 7.4.1 comes with time-1.4, therefore HDBC 2.2.* are all rejected. 2.1.1 is the topmost one without the upper bound. This analysis is made possible by "cabal install --dry-run -v3 haskelldb-hdbc-mysql" of cabal-install 0.14. Now with actually relevant output! (As part of the new "modular" solver, I guess.) P.S. haskelldb-hdbc wants mtl-2.0.*, but you already have mtl-2.1 because you have cabal-install 0.14. mtl-2.0.1.0 in turn wants transformers-0.2.*, but you already have transformers-0.3.0.0 again because you have cabal-install 0.14. Expect mysterious problems in the future.