home-manager xsession

    # default session will start xmonad
    xsession = {
      enable = true;
      windowManager = {
        xmonad = {
          enable = true;
          enableContribAndExtras = true;
          extraPackages = self: [
            self.xmobar self.xmonad-contrib
          ];
         	# ~/.xmonad/xmonad.hs is not managed by home-manager
          # It is installed through ardumont/dot-xmonad for now
          config = null;
        };
      };
      # startup initialization (user services, keyboard mapping, etc...)
      initExtra = with pkgs; ''
# On some machine, somehow, this ends up polluting shells (ubuntu
# 18.04 comes to mind)
unset LD_PRELOAD QT4_IM_MODULE QT_ACCESSIBILITY QT_IM_MODULE \
      QT_QPA_PLATFORMTHEME

# Set a default pointer.
${xorg.xsetroot}/bin/xsetroot -cursor_name left_ptr

# Turn off beeps.
${xorg.xset}/bin/xset -b

# Quicker blanking of screen.
${xorg.xset}/bin/xset dpms 120 360 800

# set the keyboard repeat rate
${xorg.xset}/bin/xset r rate 200 60

export GTK_IM_MODULE=xim

# before starting xmonad, we want a correct X db and a running urxvt daemon
[ -e ~/.Xresources ] && ${xorg.xrdb}/bin/xrdb -merge ~/.Xresources
[ -e ~/.Xdefaults ] && ${xorg.xrdb}/bin/xrdb -merge ~/.Xdefaults

# fix graphical libraries (awt, swt, etc...) in stumpwm/xmonad (exotic wm)
export _JAVA_AWT_WM_NONREPARENTING=1
${wmname}/bin/wmname "LG3D"
export AWT_TOOLKIT=MToolkit

# Layout per host divergence possible
[ -e $LAYOUT_FILE_PER_HOST ] && ${zsh}/bin/zsh $LAYOUT_FILE_PER_HOST

${pkgs.trayer}/bin/trayer --edge top \
                          --align right \
                          --SetDockType true \
                          --SetPartialStrut true \
                          --expand true \
                          --width 15 \
                          --height 21 \
                          --transparent true \
                          --tint 0x000000 &

# start needed services
systemctl --user start setxkbmap.service
systemctl --user start syndaemon.service
systemctl --user start emacs.service
systemctl --user start xscreensaver.service
    '';
  };