Description of problem:
Currently Fedora 22 has pre-release of Sisu (0.3.0.M1).
Sisu should be updated to 0.3.0 final release.
Fixed in sisu-0.3.0-1
sisu-0.3.0-1.fc22 has been submitted as an update for Fedora 22.
I believe that this feature is included in sisu-0.3.0-1,
which is available in Fedora 22, so I am closing this bug now.
The build which includes the feature can be found at Koji:
sisu-0.3.0-1.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.