Priorities are: plan > major > minor . Each issue should have one priority label.
Auxiliary labels are:
needinfo - Some important information is missing or it is not clear what the next step should be.
easyfix - Right now we think that solving the issue should be fairly easy. This perception might change when somebody examines it in detail.
wontfix - We have already decided not to implement this. If you want to re-open issue marked as wontfix, please describe very clearly your reasoning and changes to assumptions from time of last closure.