在这个问题中,我们安装了依赖项Hat.现在,当我尝试做
cabal install Hat
我到最后:
[ 6 of 11] Compiling Environment ( trans/Environment.hs, dist/build/hat-trans/hat-trans-tmp/Environment.o )
trans/Environment.hs:497:13:
Not in scope: data constructor `PExplTypeArg'
Failed to install hat-2.8.0.0
World file is already up to date.
cabal: Error: some packages failed to install:
hat-2.8.0.0 failed during the building phase. The exception was:
ExitFailure 1
我试图获得Hat调试器.当我尝试:
cabal install hat 要么 cabal install hat -v
最后我得到:
configure: error: in `/tmp/terminfo-0.4.0.0-17745/terminfo-0.4.0.0':
configure: error: curses headers could not be found, so this package cannot be built
See `config.log' for more details
Failed to install terminfo-0.4.0.0
cabal: Error: some packages failed to install:
haskeline-0.7.1.3 depends on terminfo-0.4.0.0 which failed to install.
hat-2.8.0.0 depends on terminfo-0.4.0.0 which failed to install.
terminfo-0.4.0.0 failed during the configure step. The exception was:
ExitFailure 1
所以麻烦我尝试:
cabal install terminfo
得到:
configure: error: …