"1.39-development", "f29"; (* F29 follows development. *)
"1.38-stable", "f28"; (* F28 follows 1.38. *)
"1.38-stable", "f27"; (* F27 follows 1.38. *)
"1.39-development", "f29"; (* F29 follows development. *)
"1.38-stable", "f28"; (* F28 follows 1.38. *)
"1.38-stable", "f27"; (* F27 follows 1.38. *)