dev-ruby/racc: run rake for a valid Ruby

This is a hack but given racc is needed by Ruby itself, our eselect
stuff won't have had a chance to run yet (like it does when an old
Ruby slot gets depcleaned). So, go with it to avoid breaking upgrades
during the transition :(

Signed-off-by: Sam James <sam@gentoo.org>

1 files changed, 12 insertions, 4 deletions

diff --git a/dev-ruby/racc/racc-1.6.2.ebuild b/dev-ruby/racc/racc-1.6.2.ebuild
index ecf5e73559a8..a568aa1d0569 100644
--- a/dev-ruby/racc/racc-1.6.2.ebuild
+++ b/dev-ruby/racc/racc-1.6.2.ebuild
@@ -36,10 +36,18 @@ all_ruby_prepare() {
 
 	# Avoid depending on rake-compiler since we don't use it to compile
 	# the extension.
-	sed -i -e '/rake-compiler/ s:^:#:' -e '/extensiontask/ s:^:#:' Rakefile
-	sed -i -e '/ExtensionTask/,/^  end/ s:^:#:' Rakefile
-	# Which means we need to generate the parser file here
-	rake lib/racc/parser-text.rb || die
+	sed -i -e '/rake-compiler/ s:^:#:' -e '/extensiontask/ s:^:#:' Rakefile || die
+	sed -i -e '/ExtensionTask/,/^  end/ s:^:#:' Rakefile || die
+
+	# ...which means we need to generate the parser file here
+	for ruby in ${USE_RUBY} ; do
+		if use ruby_targets_${ruby} ; then
+			if has_version -b "virtual/rubygems[ruby_targets_${ruby}(-)]" && has_version -b "dev-ruby/rake[ruby_targets_${ruby}(-)]" ; then
+				${ruby} -S rake lib/racc/parser-text.rb || die
+				break
+			fi
+		fi
+	done
 
 	sed -i -e 's:_relative ": "./:' ${RUBY_FAKEGEM_GEMSPEC} || die
 }