id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc	difficulty	ghcversion	platform
671	better error message for broken build tools	duncan		"Consider:
{{{
Configuring haskell-src-exts-1.9.0...
setup: happy version >=1.17 is required but the version of
/usr/local/bin/happy could not be determined.
}}}

The actual problem is:
{{{
/usr/local/bin/happy: error while loading shared libraries: libgmp.so.3: cannot open shared object file: No such file or directory
}}}

We could produce a better error message in this situation. If we get a non-0 exit code when we check the `--version` then we can probably safely report that the program is probably broken. Of course if we get some result text back and we cannot extract and parse the version number then that's different."	defect	new	normal		Cabal library	1.8.0.4	normal				easy (<4 hours)