Wasted few good hours on this: if you want to move from gnome (and variants like cinnamon) to something else, like sway, and not have to re-enter all the passwords - ignore the man page and all the search results that suggest `--password-store=gnome`.
It is `--password-store=gnome-libsecret` instead.
The rest - installing/starting gnome keyring is still valid, validate with seahorse (i.e. gnome password manager) it is working.
And add a desktop entry with the right flag. "--enable-logging=stderr --v" help to debug, look for key_storage_linux.cc