5 Oct
2017
5 Oct
'17
11:47 a.m.
Hi,
On 5 October 2017 at 16:29, Stuart A. Kurtz
I have problems around trying to install some standard packages: hlint, aeson. A typical error reported by cabal is
<command line>: cannot satisfy -package-id hashable-1.2.6.1-14fEJP30YhAG9w115PODz0: hashable-1.2.6.1-14fEJP30YhAG9w115PODz0 is unusable due to shadowed dependencies: text-1.2.2.2-EGUst8sqNAZCw1xLPcmcMH
This looks like a known Cabal 2.0 bug, which I haven't yet got around to fix: https://github.com/haskell/cabal/issues/4728 IIUC, this affects both Stack and Cabal, but only when used with GHC 8.2.1. Downgrading to GHC 8.0.2 should help for now.