variable1: somethingsomething
variable2: ${variable1} foo ${variable1}

-runbundles: This is ${variable2}

var: osgi.identity;filter:='(osgi.identity=variable)',\
	osgi.identity;filter:='(osgi.identity=variable2)'
-runrequires: ${var},\
	osgi.identity;filter:='(osgi.identity=b)',\
	osgi.identity;filter:='(osgi.identity=c)'