Hello Danny, Danny Milosavljevic writes: > * gnu/packages/patches/rustc-1.29.0-src.patch: New file. > * gnu/local.mk (dist_patch_DATA): Add it. > * gnu/packages/rust.scm (rust-1.19): Delete variable. > (rust-1.20): Delete variable. > (rust-1.21): Delete variable. > (rust-1.22): Delete variable. > (rust-1.23): Delete variable. > (rust-1.24): Delete variable. > (rust-1.25): Delete variable. > (rust-1.26): Delete variable. > (rust-1.27): Delete variable. > (rust-1.28): Delete variable. > (rust-1.29): Bootstrap from mrustc. > [source]: Add patch. > (rust-1.30)[inputs]: Remove llvm 3. Add llvm 6. > (mrustc): Update rustc-version to 1.29.0. I know there was a problem with this patch, but can you rebase it on the current 'core-updates' branch? I'd rather try to fix this than , but the patch does not apply any longer.