Set up user environment

Set up shell

yay zsh
chsh

Choose /usr/bin/zsh.

Then, install oh-my-zsh (see (upstream docs)[https://ohmyz.sh/#install]).

FIXME: May want to adjust theme and plugins and such!

Keep extended ZSH history

Create ~/.oh-my-zsh/custom/history.zsh with content:

HISTFILE=~/.histfile
HISTSIZE=2000000
SAVEHIST=2000000

## Extended history.
## Instead of just a list of commands, append it with this:
## `:<beginning time since epoch>:<elapsed seconds>:<command>'.
setopt extended_history

You may want to save ZSH history periodically, e.g. via Syncthing, useful for easier recovery or to search through history from other machines you use.

Run crontab -e as user, and add a line like:

*/30   *  * * * cp -a /home/olifre/.histfile /home/olifre/Sync/Sync/ZSH-History/histfile-myhostname

Set up ssh-agent

systemctl enable --user ssh-agent

Edit ~/.zshrc, set:

export SSH_AUTH_SOCK=$XDG_RUNTIME_DIR/ssh-agent.socket

Also, edit ~/.config/plasma-workspace/env/ssh-agent.sh (may need to create directory) and add the same line.

Re-login after this.

WireGuard VPN

yay wireguard-tools
nmcli conn import type wireguard file somefilewithoutspaces.conf

Note that you may want to adapt the config in NetworkManager graphically afterwards, as VPNs imported this way are autoconnect / always-on by default.