相关疑难解决方法(0)

cabal help 显示thers不是"卸载"选项.

那么卸载cabal安装的软件包的最佳方法是什么？

% cabal update
% cabal install mighttpd2

mighttpd2已成功安装.但是ghc-pkg无法找到并取消注册:

% ghc-pkg list | grep -i might
% ghc-pkg unregister mighttpd2
ghc-pkg: cannot find package mighttpd2 

祝商祺!

>find .cabal | grep -i mighttp
.cabal/share/doc/mighttpd2-2.3.3
.cabal/share/doc/mighttpd2-2.3.3/LICENSE
.cabal/share/mighttpd2-2.3.3
.cabal/share/mighttpd2-2.3.3/sample.conf
.cabal/share/mighttpd2-2.3.3/sample.route
.cabal/packages/hackage.haskell.org/mighttpd2
.cabal/packages/hackage.haskell.org/mighttpd2/2.3.3
.cabal/packages/hackage.haskell.org/mighttpd2/2.3.3/mighttpd2-2.3.3.tar.gz

>ghc-pkg list | grep -i package\.conf
 /usr/local/lib/ghc-7.0.3/package.conf.d:
 /home/sw2wolf/.ghc/i386-freebsd-7.0.3/package.conf.d:

所以ghc-pkg无法看到".cabal/packages/hackage.haskell.org".