Bug#850915: ghc: Please switch to llvm 3.8 or, better, 3.9

[Sylvestre Ledru]

Source: ghc
Severity: important

Hello,

The armel build issue on 3.8 and 3.9 has been fixed thanks to a fix in libstdc++.
ghc can now change llvm version.

This is the last package using llvm 3.7, blocking its removal.
(note that I stopped caring about 3.7 more than a year ago, it is far behing 3.8 or 3.9
in term of maintenance/support).

Sylvestre