Dear Guixers,

If I do a "guix package -u" and I don't want to upgrade some packages, 
how does my command look like?

guix package --upgrade . --do-not-upgrade emacs vlc knotes (Can I put 3 
after each other)

or

guix package --upgrade . --do-not-upgrade emacs | --do-not-upgrade vlc | 
--do-not-upgrade knotes

or

guix package --upgrade . --do-not-upgrade emacs . --do-not-upgrade vlc . 
--do-not-upgrade knotes

or still differently?

Gottfried