Recompiling the darcs tree after a pull

[Joel Reymont]

I get a lot of errors like this:

utils/Panic.lhs:27:0:
     Failed to load interface for `Config':
         Bad interface file: stage1/main/Config.hi
             mismatched interface file versions: expected 6050, found  
390518464

Do you guys always clean after a pull or is there an easy way to get  
a list of *.hi (and *.o) files to delete?

	Thanks, Joel

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