Important

This will only work with gnome-keyring. From my testing I could not get kwallet working but gnome-keyring even installed on plasma works fine

Install

First remove any existing bitwarden instances using pacman

sudo pacman -Rcns bitwarden-desktop

Next clone the repo and install via makepkg

git clone https://github.com/Lutitious/arch-bw-bio
cd arch-bw-bio
makepkg -si --skipinteg

If you care about browser integration log in and follow these steps

Go to File > Settings
Check the box Unlock with polkit
Scroll down and enable Allow browser integration and optionally Require verification for browser integration
Go to ~/.mozilla/native-messaging-hosts on Firefox or ~/.config/google-chrome/NativeMessagingHosts/ on Chrome
Open the json and make sure the PATH is set to /usr/bin/bitwarden-desktop. If not, change it to that and optionally set the file to read only.