问题
I first tried to install Hlint. cabal install hlint but then I got the error:
cabal: Error: some packages failed to install:
cpphs-1.20.2 depends on old-time-1.1.0.3 which failed to install.
haskell-src-exts-1.18.2 depends on old-time-1.1.0.3 which failed to install.
hlint-1.9.37 depends on old-time-1.1.0.3 which failed to install.
old-time-1.1.0.3 failed during the configure step. The exception was:
ExitFailure 77
Then I tried to install ghc-mod since I read that hlint is a dependency of that package(?). Thinking that it might resolve the problem. So i did cabal install ghc-mod which gave me the error.
cabal: Error: some packages failed to install:
cpphs-1.20.2 depends on old-time-1.1.0.3 which failed to install.
ghc-mod-5.6.0.0 depends on old-time-1.1.0.3 which failed to install.
haskell-src-exts-1.17.1 depends on old-time-1.1.0.3 which failed to install.
hlint-1.9.35 depends on old-time-1.1.0.3 which failed to install.
old-time-1.1.0.3 failed during the configure step. The exception was:
ExitFailure 77
So it seems to be the same problem, around my the package old-time-1.1.0.3.
回答1:
The best way to know where it fails is to go through each failed package and install them one after the other.
I had issue with haskell-src-exts in which showed up in hlint and when I tried to cabal install haskell-src-exts it was happythat wasn't properly installed.
回答2:
There are lots of variables that could be at play to explain what's going on, including cabal-install and ghc versions. It would be useful if you included the cabal --version and ghc --version output in your question.
That said: I'd recommend trying out the installation using Stack. Once you have Stack installed (on POSIX systems, usually sufficient to run curl -sSL https://get.haskellstack.org/ | sh), you can install with stack --resolver lts-6.16 --install-ghc --no-system-ghc install hlint.
回答3:
Are you on Windows or Linux? What does ghc --version say? What about ghc-pkg old-time? I recommend trying to run cabal install old-time directly, which should reproduce the error directly.
回答4:
Solution by OP.
Modify your cabal config file (you can verify the location by running "cabal user-config init") to contain the following lines:
extra-prog-path: C:\Program Files\Haskell Platform\8.0.1\msys\usr\bin
extra-lib-dirs: C:\Program Files\Haskell Platform\8.0.1\mingw\lib
extra-include-dirs: C:\Program Files\Haskell Platform\8.0.1\mingw\include
来源：https://stackoverflow.com/questions/39434709/when-i-try-to-install-hlint-i-get-errors-surrounding-old-time-1-1-0-3