New version of Haskell Platform, like past ones, has proven
troublesome for users.
I'd suggest using Stack (http://haskellstack.org) with the current LTS
which uses GHC 8.0.2, which is has been stable my work.
I'm happy to help if you have any questions.
— Chris
On Thu, Oct 5, 2017 at 10:29 AM, Stuart A. Kurtz
Dear Cafe,
I've had my first extended visit into cabal hell...
ghc: 8.2.1 (Haskell Platform) cabal: 2.0.0.2 cabal-install: 2.0.0.0 OS: MacOS X 10.13 (High Sierra)
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
FWIW, the versions of these packages reported by ghc-pkg are
hashable-1.2.6.1 text-1.2.2.2
Suggestions welcome...
Peace,
Stu
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-- Chris Allen Currently working on http://haskellbook.com