YACP - Yet another cabal problem... Trying to install criterion, which fails for test-framework, which fails for regex, which fails for mtl, which reports that it is fine and installed! Is there any simple recipe to restart the libraries for cabal (on windows)? C:\Users\guthrie>cabal install criterion Resolving dependencies... In order, the following will be installed: ... criterion-0.8.0.0 depends on test-framework-0.8.0.3 which failed to install. hastache-0.5.1 failed during the building phase. The exception was: ExitFailure 1 math-functions-0.1.4.0 failed during the building phase. The exception was: ExitFailure 1 monad-par-0.3.4.6 depends on test-framework-0.8.0.3 which failed to install. monad-par-extras-0.3.3 failed during the building phase. The exception was: ExitFailure 1 mwc-random-0.13.1.0 failed during the building phase. The exception was: ExitFailure 1 statistics-0.10.5.1 depends on test-framework-0.8.0.3 which failed to install. test-framework-0.8.0.3 failed during the configure step. The exception was: ExitFailure 1 test-framework-hunit-0.3.0.1 depends on test-framework-0.8.0.3 which failed to install. vector-algorithms-0.6.0.1 depends on mwc-random-0.13.1.0 which failed to install. vector-binary-instances-0.2.1.0 failed during the building phase. The exception was: ExitFailure 1 C:\Users\guthrie>cabal install test-framework Resolving dependencies... Configuring test-framework-0.8.0.3... cabal: The following installed packages are broken because other packages they depend on are missing. These broken packages must be rebuilt before they can be used. package regex-base-0.93.2 is broken due to missing package mtl-2.1.2-5337caef659244e51e2f5fb2e944d97f Failed to install test-framework-0.8.0.3 cabal: Error: some packages failed to install: test-framework-0.8.0.3 failed during the configure step. The exception was: ExitFailure 1 C:\Users\guthrie>cabal install mtl Resolving dependencies... All the requested packages are already installed: mtl-2.1.2 Use --reinstall if you want to reinstall anyway. ------------------------------------------- Dr. Gregory Guthrie Computer Science Department Dean, and Professor of Computer Science School of Computer Science & Mathematics Maharishi University of Management -------------------------------------------