Re: [xmonad] darcs patch: Clean .hi and .o files when recompiling

On Wed, Sep 9, 2009 at 6:51 PM, Spencer Janssen wrote:

On Wed, Sep 09, 2009 at 10:18:39AM +0200, Joachim Breitner wrote:

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Hi,

I???d like to see this in the next release, to reduce the delta between xmonad as shipped by debian and as it is on hackage:

Maybe I missed the original patch (I haven't paid much attention to xmonad in the past two months), but I would really appreciate seeing patches when/before they're applied downstream.  If the fix is important enough to apply in Debian, it is probably important enough to at least consider upstream.

Speaking of "delta", are there any other non-integration patches that Debian applies?

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Wed Sep  9 10:15:57 CEST 2009  Joachim Breitner   * Clean .hi and .o files when recompiling   This patch is applied to the Debian packages since a few months. During the   last ghc upgrade in Debian, people had to this manually to get their xmonad   compilable again. This patch should mitigate this a bit.

Regarding this specific change, perhaps we can delete interface and object files immediately after compiling?  We already instruct GHC to ignore them, so they're just taking up disk space.  Even better, can we tell GHC to put those files in /tmp and clean them up when compilation is done?

We might be able to. Looking at http://www.haskell.org/ghc/docs/latest/html/users_guide/separate-compilation... I see that what it calls 'temporary files' are already going into /tmp; what we want is to redirect the interface and object files, which would be done with "-odir" and "-hidir". So maybe hunk ./XMonad/Core.hs 460 - waitForProcess =<< runProcess "ghc" ["--make", "xmonad.hs", "-i", "-ilib", "-fforce-recomp", "-v0", "-o",binn] (Just dir) + waitForProcess =<< runProcess "ghc" ["--make", "xmonad.hs", "-i", "-ilib", "-fforce-recomp", "-hidir", "/tmp", "-odir", "/tmp", "-v0", "-o",binn] (Just dir) ? (Can we hardcode /tmp?) If I understand the docs right, this ought to redirect all interface & object files, including anything in .xmonad/lib. -- gwern