Proposal: Warn about ArrowLoop instance for Kleisli Arrows

[Bas van Dijk]

On 25 October 2011 14:47, Heinrich Apfelmus > What exactly do I have
to do to move this towards inclusion in the base
> libraries? Make a track ticket? And then?

* First setup your system to build GHC:
http://hackage.haskell.org/trac/ghc/wiki/Building/Preparation

* Checkout the sources:
$ git clone http://darcs.haskell.org/ghc.git/
$ cd ghc
$ ./sync-all get

* Make your change by editing: libraries/base/Control/Arrow.hs

* Test it by building ghc and the libraries:
$ cp mk/build.mk.sample mk/build.mk
You might want to use the quick BuildFlavour but make sure to set
HADDOCK_DOCS to YES.
$ perl boot
$ ./configure
$ make

* Commit!
$ git add Control/Arrow.hs
$ git commit
$ git format-patch

* Add the patch to your ticket.

Not to spoil anything but I saw Ross already made the change ;-)

Bas