Typo

[losingkeys]

Minor typo :), otherwise I see:

nroam--org-roam-file-p: Symbol’s function definition is void: org-roam--org-roam-file-p

in *Messages* on startup

[DamienCassou]

org-roam--org-roam-file-p is defined by org-roam.el. It might have disappeared in org-roam v2 though.

[losingkeys]

Looks like you're right about the v1/v2 thing.

I've updated the PR

[mrozigor]

I've also had a problem with void function definition. It helped to require helm for org-roam:
(use-package org-roam :requires helm)