====== chruby ======

  * [[https://github.com/postmodern/chruby#install|Install]]
  * [[https://github.com/postmodern/ruby-install#install|Install ruby-install]]

For ''systemd'' services, this should be sufficient:

    [Service]
    User=slack
    Group=slack
    WorkingDirectory=/home/slack/porridge/daemon
    # sbin shouldn't be needed if you are running as a normal user
    # Environment="PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin"
    Environment="PATH=/bin:/usr/bin:/usr/local/bin"
    # I have had "chruby-exec[157986]: zsh:1: command not found: chruby" when using zsh
    Environment="SHELL=/bin/bash"
    ExecStart=chruby-exec 3.0.3 -- /home/slack/porridge/weather/bin/weatherd
    # This worked for some services but threw gem errors for others
    # ExecStart=/opt/rubies/ruby-3.0.3/bin/ruby /home/slack/porridge/weather/bin/weatherd
    

See **[[https://github.com/postmodern/chruby/wiki/Cron|instructions for cron]]**, [[https://www.baeldung.com/linux/systemd-services-environment-variables|congifuring systemd environment]] and [[https://stackoverflow.com/questions/35439123/systemd-environment-directive-to-set-path|setting PATH for systemd]].