id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	os	architecture	failure	difficulty	testcase	blockedby	blocking	related
1290	ghc runs preprocessor too much	guest		"When an external preprocessor has been specified with -F -pgmF, and then using ghc --make, ghc runs the preprocessor on every .hs file, even those for which compilation is skipped.  This seem unnecessary and it slows down recompilation significantly when you have many files.

  -- Lennart"	bug	new	normal	_|_	Driver	6.7				Unknown/Multiple	Unknown/Multiple	None/Unknown	Unknown