Hi, A friend of mine is trying to install my "timeplotters" (see email signature). He's getting a weird error: one of the tools installs fine but the other one fails with the error "Couldn't read cabal file "hashable/ 1.2.0.0/hashable.cabal""; curiously, so does running "cabal install cabal-install". Even more curiously, hashable 1.2.0.0 does not appear anywhere in the list of dependencies, even indirect. Look: $ cabal -v3 install cabal-install searching for ghc in path. found ghc at /usr/bin/ghc ("/usr/bin/ghc",["--numeric-version"]) /usr/bin/ghc is version 7.0.3 looking for tool "ghc-pkg" near compiler in /usr/bin found ghc-pkg in /usr/bin/ghc-pkg ("/usr/bin/ghc-pkg",["--version"]) /usr/bin/ghc-pkg is version 7.0.3 ("/usr/bin/ghc",["--supported-languages"]) ("/usr/bin/ghc",["--info"]) Reading installed packages... ("/usr/bin/ghc-pkg",["dump","--global","-v2"]) ("/usr/bin/ghc-pkg",["dump","--user","-v2"]) ("/usr/bin/ghc",["--print-libdir"]) Reading available packages... Resolving dependencies... cabal: Couldn't read cabal file "hashable/1.2.0.0/hashable.cabal" He's using haskell platform on Ubuntu 12.04. $ ghc —version The Glorious Glasgow Haskell Compilation System, version 7.0.3 $ cabal —version cabal-install version 0.10.2 using version 1.10.1.0 of the Cabal library He *did* try erasing ~/.cabal, ~/.ghc and /usr/lib/ghc and then reinstalling haskell-platform package - it didn't change anything. He doesn't remember ever having Haskell installed before, but that can't be completely ruled out. I just tried installing a fresh Ubuntu 12.04 onto a VM and I did not have this problem that he has. What additional information can I ask him for? Maybe somebody already encountered this problem? (Actually, I have a whole strace cabal install cabal-install, but it's 33Mb - I can upload it somewhere if it could be helpful). -- Eugene Kirpichov http://www.linkedin.com/in/eugenekirpichov http://jkff.info/software/timeplotters - my performance visualization tools