libs/project: Call functions from any project

Helper functions, such as "arguments", provided by one project should
be callable from another project for more flexibility. Metaprojects in
particular could use this functionality.

In order for this to work, project_include() is used to create the
necessary environment separation (so defined functions are not
clobbered by the helper function).

1 files changed, 8 insertions, 4 deletions

diff --git a/libs/project b/libs/project
index 2b6fc2fd..b9d33114 100755
--- a/libs/project
+++ b/libs/project
@@ -200,11 +200,15 @@ project_action_helper() {
 	local project="$1"
 	shift
 
-	if ! function_check "$helper"; then
-		return 0
-	fi
+	(
+		project_include "$project"
 
-	"$helper" "$@"
+		if ! function_check "$helper"; then
+			exit 0
+		fi
+
+		"$helper" "$@"
+	)
 }
 
 project_action_arguments() {