Chris Willman Music WriterWillie Nelson and Luck Presents, a “rogue collective” based in his hometown of Luck, Texas, have announced a four-day virtual cannabis convention, to be hosted online by fellow musician Nathaniel Rateliff.Dubbed “Luck Summit: Planting the Seed,” the ticketed event will serve as a benefit for HeadCount’s Cannabis Voter Project, with programming beginning April 26 and wrapping up on Nelson’s 88th birthday April 29.