{ pkgs, config, ... }: {

  programs.zsh = {
    enable = true;
    enableCompletion = true;
    autosuggestion.enable = true;
    syntaxHighlighting.enable = true;

    shellAliases = {
      ll = "ls -l";
    };
    history.size = 10000;
    history.path = "${config.xdg.dataHome}/zsh/history";

    initExtra = ''
      bindkey -v
      bindkey "^H" backward-delete-char
      bindkey "^?" backward-delete-char
      set -o vi
      export TERM=xterm-256color

      if [ -n "$SSH_CLIENT" ] || [ -n "$SSH_TTY" ]; then
      	SESSION_TYPE="(ssh) "
      fi

      ####
      # Format prompt
      ####

      # Define colors
      COLOR_RED="red"
      COLOR_MAGENTA="92"
      COLOR_YELLOW="3"
      COLOR_GREEN="36"
      COLOR_BLUE="4"
      COLOR_WHITE="7"

      # Format git colors
      autoload -Uz compinit && compinit
      autoload -Uz add-zsh-hook
      autoload -Uz vcs_info
      add-zsh-hook precmd vcs_info

      zstyle ':vcs_info:*' enable git
      zstyle ':vcs_info:*' formats " %F{cyan}%c%u(%b)%f"
      zstyle ':vcs_info:*' actionformats " %F{cyan}%c%u(%b)%f %a"
      zstyle ':vcs_info:*' stagedstr "%F{$COLOR_RED}"
      zstyle ':vcs_info:*' unstagedstr "%F{$COLOR_RED}"
      zstyle ':vcs_info:*' check-for-changes true

      zstyle ':vcs_info:git*+set-message:*' hooks git-untracked
      +vi-git-untracked() {
        if git --no-optional-locks status --porcelain 2> /dev/null | grep -q "^??"; then
          hook_com[staged]+="%F{$COLOR_RED}"
        elif git --no-optional-locks status --porcelain 2> /dev/null | grep -q "^A"; then
          hook_com[staged]+="%F{$COLOR_YELLOW}"
        else
          hook_com[staged]+="%F{$COLOR_GREEN}"
        fi
      }

      # Format prompt
      setopt PROMPT_SUBST
      PROMPT='%F{'$COLOR_GREEN'}'$(echo "$SESSION_TYPE")'''
      PROMPT+='%F{'$COLOR_RED'}['
      PROMPT+='%F{'$COLOR_GREEN'}%n'
      PROMPT+='%F{red}@'
      PROMPT+='%F{'$COLOR_YELLOW'}%m'
      PROMPT+='%F{'$COLOR_RED'}] '
      PROMPT+='%F{'$COLOR_WHITE'}['
      PROMPT+='%F{'$COLOR_YELLOW'}%1~'
      PROMPT+='%F{'$COLOR_WHITE'}]'
      PROMPT+='$'
      PROMPT+='vcs_info_msg_0_'
      PROMPT+=' > '
      export PROMPT
      setopt autocd		# Automatically cd into typed directory.
      stty stop undef		# Disable ctrl-s to freeze terminal.
      setopt interactive_comments

      # General opts
      HISTSIZE=10000000
      SAVEHIST=10000000
      setopt appendhistory

      # Change cursor shape for different vi modes.
      function zle-keymap-select () {
          case $KEYMAP in
              vicmd) echo -ne '\e[1 q';;      # block
              viins|main) echo -ne '\e[5 q';; # beam
          esac
      }
      zle -N zle-keymap-select
      zle-line-init() {
          zle -K viins # initiate `vi insert` as keymap (can be removed if `bindkey -V` has been set elsewhere)
          echo -ne "\e[5 q"
      }
      zle -N zle-line-init
      echo -ne '\e[5 q' # Use beam shape cursor on startup.
      preexec() { echo -ne '\e[5 q' ;} # Use beam shape cursor for each new prompt.

    '';
  };
}