* gnu/patches/rust-1.30-gdb-llvm.patch: New file. * gnu/local.mk (dist_patch_DATA): Add it. * gnu/packages/rust.scm (rust): Rename to... (rust-1.29): ...this. (rust-1.30): New variable. (rust): New variable. Signed-off-by: Danny Milosavljevic <dannym@scratchpost.org>