Hi, On Tue, 5 Oct 2021 at 16:04, Dale Mellor wrote: > guix pull: error: You found a bug: the program > '/gnu/store/dxfmlkrv92073p3vb2hf9bwczcnk0ss2-compute-guix- > derivation' > failed to compute the derivation for Guix (version: > "b54bf075c577b9f78041362035383dbbfb456617"; system: "x86_64- > linux"; > host version: "20bc9ecc204a610a0d5fa8b88c74421f57dbaf3b"; pull- > version: 1). I cannot reproduce with this: guix time-machine --commit=20bc9ecc204a610a0d5fa8b88c74421f57dbaf3b \ -- time-machine --commit=b54bf075c577b9f78041362035383dbbfb456617 \ -- help If '/gnu/store/dxfmlkrv92073p3vb2hf9bwczcnk0ss2-compute-guix-derivation' is produced, could you send it? All the best, simon