id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
1142	GHC_PKG_CHECK fails when multiple versions of the package are installed	guest	duncan	"The GHC_PKG_CHECK macro doesn't work properly when multiple versions of the same package are installed. I'm guessing it's a problem where it assumes GNU sed but BSD sed doesn't work (OS X uses BSD sed).

The actual error is this expression {{{sed -e 's/,/\n/g' -e 's/[[(), ]]//g'}}} (the first -e expression). The token \n in a replacement string is not interpreted as a newline by BSD sed. You have to embed a real backslash-escaped newline. The second -e expression also doesn't work right, since {{{[[(), ]]}}} isn't a valid POSIX regex. This whole expression should probably be replaced with {{{tr ',' '\n' | tr -d '(), '}}}

There's another sed expression further on in the same line {{{sed -e 's/[[A-Za-z-]]*//'}}} which also has the same problem with {{{[[A-Za-z-]]}}} not being a valid POSIX regex. The problem here is that the expressions seem to treat {{{[[bar]]}}} as a character class for {{{bar}}}, but that should just be {{{[bar]}}}. {{{[[bar]]}}} is invalid because it treats {{{[[bar]}}} as the character class (containing [, b, a, and r) followed by a trailing ]. This expression could also be replaced by {{tr}}, or it could just be fixed to read {{{[A-Za-z-]}}}"	defect	closed	normal		build system	0.9.13	fixed		kevin@… matti.niemenmaa+gtk2hsbugs@…