+# Work around weird debian/ubuntu phantomjs
+# https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=817277
+# https://github.com/ariya/phantomjs/issues/14376
+ENV["QT_QPA_PLATFORM"] = "offscreen" if IO.popen(["phantomjs", "--version"], :err => :close).read.empty?