Leap 15.3 - Rust and its build time dependencies

Hi there, I am trying to build all packages I'm somehow involved with for Leap 15.3, but fail with "rust". rust-1.47 require llvm-devel >= 8.0 (9.0 since rust-1.48), but this cannot be found for Leap 15.3. As Leap 15.2 comes with llvm-devel-9.0.1 and since Leap 15.3 should provide everything Leap 15.2 has (at least that's my understanding), why is it missing? Can I do anything about this? If so, what? For details just look at the following project and its meta data: <https://build.opensuse.org/project/show/home:manfred-h:devel:languages:rust:rust-1.47> <https://build.opensuse.org/projects/home:manfred-h:devel:languages:rust:rust-1.47/meta> TIA, cheers. l8er manfred