Cabal无法安装软件包，因为它需要阴谋集团

Question

当我尝试安装目录包时，我会得到以下错误：

$ cabal install directory
Resolving dependencies...
Failed to install directory-1.2.2.1
cabal: Error: some packages failed to install:
directory-1.2.2.1 failed during the configure step. The exception was:
user error (The package requires Cabal library version -any && >=1.10 but no
suitable version is installed.)

我的集会版本是：

cabal --version
cabal-install version 1.16.0.2
using version 1.16.0 of the Cabal library 

我试图执行Cabal安装Cabal，但它取决于目录，因此也会失败。怎么了，我如何解决它？

Answer 1

cabal（库）和阴道安装（可执行文件）不是同一回事。您需要升级您的阴谋集：

cabal install cabal cabal-install

您的版本（1.16）很古老。