Hi Carter,

OK, here's the full info (see log below), this is on an MBP, 

running ghc 7.8.3 (From ghcformac).

In a new directory, I create a FRESH cabal sandbox, and then do:

   $ cabal install --enable-library-profiling --ghc-options="-O2 -rtsopts -prof -auto-all -caf-all" vector

In doing so I get errors about unable to build 'primitive' because  

    Failed to load interface for ‘GHC.Integer.Type’

    Perhaps you haven't installed the "p_dyn" libraries for package ‘integer-gmp’?

    Use -v to see a list of the files searched for.

Googling the above takes me to

    https://ghc.haskell.org/trac/ghc/ticket/8677

But unfortunately I can't from the above tell exactly how to proceed.

1. Can you tell me how to get a profiling version of vector built in 

   a new sandbox? i.e. what options are you using?

2. Is there any other information you need? I'm assuming since its in 

   a sandbox I needn't nuke my global cabal directory but happy to if 

   needed.

Thanks! (log below)

-- Ranjit.

rjhala@borscht ~/r/l/tmp> mkdir vector-build

rjhala@borscht ~/r/l/tmp> cd vector-build/

rjhala@borscht ~/r/l/t/vector-build> cabal sandbox init

Writing a default package environment file to

/Users/rjhala/research/liquid/tmp/vector-build/cabal.sandbox.config

Creating a new sandbox at

/Users/rjhala/research/liquid/tmp/vector-build/.cabal-sandbox

rjhala@borscht ~/r/l/t/vector-build> cabal install --enable-library-profiling --ghc-options="-O2 -rtsopts -prof -auto-all -caf-all" vector

Resolving dependencies...

Notice: installing into a sandbox located at

/Users/rjhala/research/liquid/tmp/vector-build/.cabal-sandbox

Configuring primitive-0.6...

Building primitive-0.6...

Failed to install primitive-0.6

Last 10 lines of the build log ( /Users/rjhala/research/liquid/tmp/vector-build/.cabal-sandbox/logs/primitive-0.6.log ):

Configuring primitive-0.6...

Building primitive-0.6...

Preprocessing library primitive-0.6...

[ 1 of 10] Compiling Data.Primitive.Internal.Compat ( Data/Primitive/Internal/Compat.hs, dist/dist-sandbox-34ea82/build/Data/Primitive/Internal/Compat.o )

Top level:

    Failed to load interface for ‘GHC.Integer.Type’

    Perhaps you haven't installed the "p_dyn" libraries for package ‘integer-gmp’?

    Use -v to see a list of the files searched for.

cabal: Error: some packages failed to install:

primitive-0.6 failed during the building phase. The exception was:

ExitFailure 1

vector-0.10.12.3 depends on primitive-0.6 which failed to install.

rjhala@borscht ~/r/l/t/vector-build [1]> which ghc

/Applications/ghc-7.8.3.app/Contents/bin/ghc