Another error :
------------------------------> error start <------------------------------ Preprocessing library plugins-1.4.1... Building plugins-1.4.1... [ 7 of 15] Compiling System.Plugins.Env ( src/System/Plugins/Env.hs, dist/build/System/Plugins/Env.o )
src/System/Plugins/Env.hs:315:45: Couldn't match expected type `PackageDBStack' against inferred type `PackageDB' In the second argument of `getInstalledPackages', namely `(SpecificPackageDB f)' In a stmt of a 'do' expression: pkgIndex <- getInstalledPackages silent (SpecificPackageDB f) pc In the expression: do { pc <- configureAllKnownPrograms silent defaultProgramConfiguration; pkgIndex <- getInstalledPackages silent (SpecificPackageDB f) pc; return $ allPackages pkgIndex } cabal: Error: some packages failed to install: plugins-1.4.1 failed during the building phase. The exception was: ExitFailure 1 ------------------------------> error end <------------------------------
It looks like it is not the last error :) Try this: pkgIndex <- getInstalledPackages silent [SpecificPackageDB f] pc Not sure it will work as expected after that, but you can just try :)