hi, this time i am running 7.8 rc2 (binary for x64 on debian testing). after a successful '/usr/bin/cabal install cabal-install', i am running into different instances of this: | [...] | [25 of 25] Compiling Text.ParserCombinators.Parsec.Perm ( Text/ParserCombinators/Parsec/Perm.hs, dist/build/Text/ParserCombinators/Parsec/Perm.o ) | /usr/bin/ld: cannot find -lHSmtl-2.1.2-ghc7.8.0.20140228 | collect2: error: ld returned 1 exit status | Failed to install parsec-3.1.5 | cabal: Error: some packages failed to install: | network-2.4.2.2 depends on parsec-3.1.5 which failed to install. | parsec-3.1.5 failed during the building phase. The exception was: | ExitFailure 1 what makes me suspect this could be relevant to this list is that the symptoms are weirdly sporadic. my story: 1. cabal install string-conversions fails because -lHStext-1.1.0.1 cannot be found. 2. ghc-pkg unregister <a few packages> 3. cabal install network (which pulls text) => fails (see above) 4. cabal install string-conversions => works! i will read up on dynamic linking in ghc now. cheers, matthias