当我尝试安装hlint时，我得到了关于old-time-1.1.0.3的错误

Question

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 .

Answer 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 happy that wasn't properly installed.

Answer 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 .

Answer 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.

Answer 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