ghc requesting package version 1.1.7 but 0.1.7 is installed ?

$ ghc -o setup --make -package Cabal-0.1.7 setup.hs Linking setup ... ghc-6.5.20060917: unknown package: Cabal-1.1.7 I don't understand this. I've substituted Version 1.1.7 by 0.1.7 to get a low version which won't be used unless requested. This is the only Cabal package beeing installed. $ ghc-pkg describe Cabal shows name: Cabal version: 0.1.7 license: BSD3 ... Why is ghc requesting still 1.1.7? set | grep 1.1.7 doesn't list any interesting environment variable except of pwd and OLDPWD The Cabal which has been destributed with my ghc is verison 1.1.5.9.2 thus can't be the problem. Any suggestion is appreciated. Marc