Repertoire.BMI.com does list a song called YOU RE GONNA MISS ME WHEN I M GONE written by Bruce Phillips and published by Scruggs Music Inc—as well as several other songs with the same title. I notice one was written by John Lee Hooker, one by Charlie Monroe (brother of Bill Monroe), one co-written by Kathy Louvin (daughter of Ira Louvin, one of the Louvin Brothers), and one by Elizabeth Cotten, though most of the names aren't familiar to me.