Hi Mark, Mark H Weaver skribis: > exporting path `/gnu/store/zrw4yckqa9g6a8zglkz7g0gfr6k78jl8-r-usethis-1.4.0' > guix offload: error: build failed: error parsing derivation `/gnu/store/5qjsrh8dncv6sninnyydkzccmh89498r-r-fs-1.2.6.drv': expected string `Derive([' Could you check the contents of this file? This very much suggests a file system corruption (e.g., the file is actually empty yet considered valid per /var/guix/db/db.sqlite.) Thanks, Ludo’.