Ludovic Courtès writes: > Did you try the ‘guix environment -n’ command above? Doesn’t it show > the manual-database.drv? It does show the manual database, but then running guix build /gnu/....drv --check does not run my changed code. I’m doing time ./pre-inst-env guix build /gnu/store/jnkxwwxk71n07fs6naa11fxmg3vpnnb3-manual-database.drv --check But it runs the installed guix, not the local changes to profile.scm. Best wishes, Arne -- Unpolitisch sein heißt politisch sein ohne es zu merken