I'm trying to get Mastodon installed on #Debian 11. Following the instructions run into an odd error with yarn install --pure-lockfile;
> Unknown Syntax Error: Unsupported option name ("--pure-lockfile").
Googling isn't showing up anything, and as far as I can see I've latest stable yarn installed, alongside node 16.18.1, which should have yarn built in according to the yarn docs. Any ideas or suggestions where I should be looking? #MastodonInstall #sysadmin