Let me amend: in the log I see an occurrence with a comma, rather than an "and", like this commit 3b175eab84f9899804b466506a57b5807285150a Author: Marius Bakke Commit: Marius Bakke gnu: nss, nss-certs: Update to 3.29.2. * gnu/packages/certs.scm (nss-certs): Update to 3.29.2. * gnu/packages/gnuzilla.scm (nss): Update to 3.29.2. * gnu/packages/patches/nss-pkgconfig.patch: Adapt to context changes. You could probably do like this Subject: [PATCH] gnu: Add LLVM, CLANG 3.9.1. * gnu/packages/llvm.scm (llvm-3.9.1): New variable. * gnu/packages/llvm.scm (clang-3.9.1): New variable. * gnu/packages/llvm.scm (clang-runtime-3.9.1): New variable.