我正在尝试在Ubuntu 14.04上安装Haskell包cpython，我收到此错误消息：
$ cabal install cpython
Resolving dependencies...
Configuring cpython-3.3.0...
cabal: The pkg-config package 'python-3.3' is required but it could not be
found.
Failed to install cpython-3.3.0
cabal: Error: some packages failed to install:
cpython-3.3.0 failed during the configure step. The exception was:
ExitFailure 1
我的假设是它需要安装python3.3-dev或类似东西，但python3.3似乎已从Ubuntu 14.04中删除。