[Haskell-beginners] cabal -j

Brent Yorgey byorgey at seas.upenn.edu
Sun May 5 20:38:44 CEST 2013

On Sun, May 05, 2013 at 06:10:25PM +0000, gs wrote:
> Brandon Allbery <allbery.b <at> gmail.com> writes:
> > Not that different; make doesn't run parallel by default either (see make
> -j). 
> Does cabal -j also suffer from interleaved output? 

No; when the -j flag is turned on it uses an abbreviated output format
that just tells you *what* it is doing (downloading XYZ package,
configuring foo, building baz...) but not the details, with the
details going to a separate log file for each package.  There may soon
also be a way to use it with hydra-print which could be nice.

> And will it be possible
> to set e.g. -j12 as the default?

Yes, edit your ~/.cabal/config and add/uncomment the line

jobs: 12


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