我试图安装hsparql，cabal版本1.22.1.1
cabal install hsparql
给出
Could not find module `Network.URI'
It is a member of the hidden package `network-uri-2.6.0.1'.
Perhaps you need to add `network-uri' to the build-depends in your .cabal file.
Use -v to see a list of the files searched for.
Failed to install hsparql-0.2.5
cabal: Error: some packages failed to install:
hsparql-0.2.5 failed during the building phase. The exception was:
ExitFailure 1
但是
cabal install network-uri
显示
All the requested packages are already installed:
network-uri-2.6.0.1
可能是什么问题？