I used the latest Haskell Platform 7.10.2-a (https://www.haskell.org/platform/mac.html) on Mac OS X 10.11 for El-capitan.
When I tried to install yesod with cabal install yesod, I have multiple error messages such as:
Building email-validate-2.1.3...
Building http-api-data-0.2.1...
Building fast-logger-2.4.1...
Building http-date-0.0.6.1...
Failed to install crypto-random-0.0.9
Build log ( /Users/smcho/.cabal/logs/crypto-random-0.0.9.log ):
Configuring crypto-random-0.0.9...
Building crypto-random-0.0.9...
Preprocessing library crypto-random-0.0.9...
<command line>: cannot satisfy -package-id vector-0.11.0.0-730f99979d41c11c3a1ef069844b5f57
(use -v for more information)
Failed to install email-validate-2.1.3
Build log ( /Users/smcho/.cabal/logs/email-validate-2.1.3.log ):
Configuring email-validate-2.1.3...
The error pattern is pretty much the same: cannot satisfy -package-id.
For example, cabal install aeson gives cannot satisfy -package-id attoparse... error.
Resolving dependencies...
Configuring aeson-0.10.0.0...
Building aeson-0.10.0.0...
Failed to install aeson-0.10.0.0
Build log ( /Users/smcho/.cabal/logs/aeson-0.10.0.0.log ):
Configuring aeson-0.10.0.0...
Building aeson-0.10.0.0...
Preprocessing library aeson-0.10.0.0...
<command line>: cannot satisfy -package-id attoparsec-0.13.0.1-99b4df28644e63383f308c810764a8bb
(use -v for more information)
cabal: Error: some packages failed to install:
aeson-0.10.0.0 failed during the building phase. The exception was:
ExitFailure 1
However, attoparsec library seems to be installed without problem.
smcho@macho ~> cabal install attoparsec
Resolving dependencies...
All the requested packages are already installed:
attoparsec-0.13.0.1
Use --reinstall if you want to reinstall anyway.
What might be wrong?
This might be controversial, but imho the haskell platform and cabal (when used directly) are both essentially deprecated now with the advent of stack.
Stack will:
stack setup)