Hi all, Recent developments in containers made me to give it a spin, too. I'd like to compile and test containers package. I got the sources, compiled. So far so good. Then the testsuite inside source code seems to require GHC testing framework. This seems a bit heavy. Anyway I got recent GHC sources, placed containers under libraries/containers-ex. Running 'make TEST_HC=ghc' in tests directory fails with: *** unexpected failure for sequence001(threaded1) =====> sequence001(threaded2) 4 of 4 [0, 30, 0] cd . && '/usr/bin/ghc' -fforce-recomp -dcore-lint -dcmm-lint -dno-debug-output -no-user-package-conf -rtsopts -fno-ghci-history -o sequence001 sequence001.hs -O -threaded -eventlog -package containers >sequence001.comp.stderr 2>&1 Compile failed (status 256) errors were: ghc: unrecognised flags: -fno-ghci-history Usage: For basic information, try the `--help' option. What I aim for is to have a fast/short way of doing some experimental changes and running only the containers testsuite with my own changes included. How do I get to doing this? -- Gracjan