ZSH

• Run ln -s ~/env/zsh/zshrc ~/.zshrc and ln -s ~/env/zsh/ ~/.zsh/.
• Run set_up_custom_history to create $CUSTOM_HISTDIR and $CUSTOM_HISTFILE.

Kitty

• Run tic -x -o ~/.terminfo terminfo-24bit.src to set up 24-bit true color.

Emacs

• Run ln -s ~/env/emacs ~/.emacs.d.
• Start with TERM=xterm-24bit emacs to get 24-bit true color.
• Run (byte-recompile-directory "~/env/emacs/elpa" 0 t) to compile .el files into .elc files.