[eclipsefp-develop] EclipseFP 2.6.3 on OS X Yosemite and LunaSR1, GHC 7.8.3

[Randall B. <r.b...@au...>]

Hi

I’m having difficulty getting EclipseFP working on Luna-SR1 on OS X Yosemite 10.10.1.

When launching, a few things seem to build, but then the console displays:

Resolving dependencies...

Configuring haskell-src-exts-1.16.0.1...

Failed to install haskell-src-exts-1.16.0.1

Build log ( /Users/rbri053/.cabal/logs/haskell-src-exts-1.16.0.1.log ):

Configuring haskell-src-exts-1.16.0.1...

setup-Simple-Cabal-1.21.1.0-x86_64-osx-ghc-7.8.3: The program 'happy' version

>=1.17 is required but it could not be found.

cabal: Error: some packages failed to install:

haskell-src-exts-1.16.0.1 failed during the configure step. The exception was:

ExitFailure 1

stylish-haskell-0.5.11.0 depends on haskell-src-exts-1.16.0.1 which failed to

install.


I had it working nicely for a few weeks on an earlier version of EclipseFP (v2.6) (so thanks for the hard work done to make this excellent piece of software!)
(Full version string for the version I am trying to get working:  FP: Haskell support for Eclipse 2.6.3.201501121809 net.sf.eclipsefp.haskell.feature.group The EclipseFP Project)

Some other weird behaviour:
Under Preferences/Haskell/Haskell Implementations, the list is blank, even if the entry for GHC 7.8.3 appeared in the previous session.
I have ghc, cabal and happy in the path (added there by adding entries to /etc/paths)

Thanks in advance.
Regards,
Randall