Hi, sorry for writing again, but I didn't manage to create my profile yet. ............................................... I did a: guix package -i musescore -p Projekte/Musescore/guix-profil Das folgende Paket wird installiert(this package will be installed): musescore 4.0 ....................................................... after that there was this message: Hinweis: Vielleicht möchten Sie die nötigen Umgebungsvariablen festlegen, indem Sie dies ausführen: GUIX_PROFILE="/home/gfp/Projekte/Musescore/guix-profil" . "$GUIX_PROFILE/etc/profile" Sie können sie auch mit `guix package --search-paths -p "/home/gfp/Projekte/Musescore/guix-profil"' nachlesen.(you can read in:) ................................................................ I did that: GUIX_PROFILE="/home/gfp/Projekte/Musescore/guix-profil" . "$GUIX_PROFILE/etc/profile" .......................................................... after that I did a: export GUIX_PROFILE=/Projekte/Musescore/guix-profil .................................................... after that I did a: source "${GUIX_PROFILE}/etc/profile" .................................................. message was: -bash: /Projekte/Musescore/guix-profil/etc/profile: Datei oder Verzeichnis nicht gefunden (file or directory was not found) ........................................................ Where was my mistake? Kind regards Gottfried