Revert "meta: Remove bspwm"

2 months ago, I removed bspwm in favor of GNOME. After using GNOME as a
daily driver for some months now, I can appreciate it as a nice desktop
environment for many GNU/Linux users, however it does not meet my needs
as well as a customized window manager setup can.

In reality, I don't need *too much* from a window manager; it just needs
to manage windows in a reasonable way. For anything else I need, I am
free to program it myself as a learning exercise. I prefer understanding
most if not everything running in my environment versus having various
GNOME utilities running in the background.

bspwm/.config/bspwm/bspwmrc

@@ -0,0 +1,165 @@
+#!/bin/sh
+# New Start: A modern Arch workflow built with an emphasis on functionality.
+# Copyright (C) 2018-2022 Donovan Glover
+
+export SXHKD_SHELL="/usr/bin/bash"
+export XCURSOR_THEME="phinger-cursors"
+export XDG_DATA_DIRS="/usr/share:/usr/share:/usr/local/share"
+export BROWSER="qutebrowser"
+export GTK_IM_MODULE=fcitx
+export QT_IM_MODULE=fcitx
+export XMODIFIERS=@im=fcitx
+export GLFW_IM_MODULE=ibus
+export XSECURELOCK_SAVER=saver_mpv
+export XSECURELOCK_COMPOSITE_OBSCURER=0
+
+sxhkd &
+
+# Use Left/Up/Right/Down for primary monitor
+bspc monitor -d 一 二 三 四 五 六 七 八 九 十
+
+bspc config split_ratio          0.50
+
+# Make moving windows look nice at 240Hz
+bspc config pointer_motion_interval 4
+
+# Don't use borders/gaps by default
+bspc config border_width 0
+bspc config window_gap 0
+bspc config single_monocle true
+
+# Always focus the window under the cursor
+# while moving the mouse, similar to i3
+bspc config focus_follows_pointer true
+
+# Change the default X shaped cursor to a pointer
+xsetroot -cursor_name left_ptr
+
+# Set a temporary black background to avoid flash
+~/.config/feh/tile.sh 000000
+
+# If running with VirtualBox client utilities, start them.
+# Useful for automatically changing display resolution, etc.
+if hash VBoxClient-all 2>/dev/null; then
+  VBoxClient-all
+fi
+
+# Use the previous color scheme if present. Otherwise use a sane default.
+if [ -e ~/.cache/wal/colors.json ]; then
+  wal -o ~/.config/wal/done.sh -R
+else
+  wal -o ~/.config/wal/done.sh --theme base16-tomorrow-night
+fi
+
+# Never blank the screen if it's a virtual machine (disable power saving)
+VIRTUAL="$(systemd-detect-virt)"
+
+if [[ "$VIRTUAL" != "none" ]]; then
+  xset s off -dpms
+fi
+
+# Start picom (prevents screen tearing)
+# Note: --experimental-backends adds support for dual kawase blur
+picom --experimental-backends -b
+
+# Start bar
+tint2 &
+
+# Change cursor size and other things based on DPI
+# Get the host width
+HOST_WIDTH=$(bspc query -T -m | jq '.rectangle.width')
+
+CURSOR_THEME=${XCURSOR_THEME:-phinger-cursors}
+
+# If the DPI is not set, set it to 96 by default
+if [ -z "$(xrdb -query | grep dpi)" ]; then
+  X_DPI=96
+fi
+
+# Determine the DPI based on screen width
+if [ "$HOST_WIDTH" -eq "1920" ]; then
+  X_DPI=96
+fi
+
+if [ "$HOST_WIDTH" -eq "3840" ]; then
+  X_DPI=192
+fi
+
+# Reposition the desktop background
+~/.fehbg &
+
+# If the DPI needs to be changed, change it
+if [ "$X_DPI" ]; then
+  echo "Xft.dpi:$X_DPI" | xrdb -merge
+
+  # Change the X cursor size as well
+  # NOTE: For full effect, this needs to be used in combination with XCURSOR_SIZE.
+  # NOTE: ($X_DPI / 6) here means that 4k will use cursor size 32, so it will appear
+  #       about half the size of the 1080p cursor. If this is not what you want, use
+  #       cursor size 64 instead.
+  xsetroot -xcf "/usr/share/icons/$CURSOR_THEME/cursors/left_ptr" "$(($X_DPI / 6))"
+fi
+
+# bspc rules
+bspc rule -a feh            state=floating
+bspc rule -a kitty:floating state=floating
+bspc rule -a Rofi           state=floating
+
+# Configure touchpad
+xinput set-prop "SynPS/2 Synaptics TouchPad" "libinput Natural Scrolling Enabled" 1
+xinput set-prop "SynPS/2 Synaptics TouchPad" "libinput Tapping Enabled" 1
+xinput set-prop "SynPS/2 Synaptics TouchPad" "libinput Disable While Typing Enabled" 0
+
+# Auto-hide the mouse cursor when inactive
+unclutter &
+
+# Start the notification daemon
+dunst &
+
+# Use a cool crossfade effect
+# mpc crossfade 3
+
+# Start fcitx
+fcitx5 &
+
+# Auto-mount partitions
+udiskie &
+
+# Start mullvad notifications
+if hash mullvad-vpn 2>/dev/null; then
+  mullvad-vpn &
+fi
+
+# Start an authentication agent for polkit
+/usr/lib/polkit-gnome/polkit-gnome-authentication-agent-1 &
+
+# Use maximum brightness on the keyboard by default
+brightnessctl --device='tpacpi::kbd_backlight' set 2
+
+# Enable alt tab
+alttab -d 1 -w 1 -font "xft:Noto Sans CJK JP" -mk Super_L &
+
+# Fix bar showing above fullscreen programs
+xdo above -t "$(xdo id -N Bspwm -n root | sort | head -n 1)" $(xdo id -n tint2)
+
+# Open new nodes on the next unoccupied desktop (dynamic desktops part 1)
+bspc subscribe node_add | while read event; do
+  if [ $(bspc query -N -n '.local.!hidden.tiled' | wc -l) -gt 1 ]; then
+    nodeId=$(echo "$event" | cut -d" " -f 5)
+    next=$(bspc query -D -d 'next.!occupied')
+
+    if [ -n "$next" ]; then
+      bspc node "$nodeId" --to-desktop "$next" --follow
+    fi
+  fi
+done &
+
+# Go to the previous node if the current desktop is empty (dynamic desktops part 2)
+bspc subscribe node_remove | while read event; do
+  if [ -n "$(bspc query -D -d '.!occupied' | rg $(bspc query -D -d focused))" ]; then
+    bspc query -N -n older && bspc node older -f || bspc desktop '^1' -f
+  fi
+done &
+
+# Make the start button work as expected
+ksuperkey -t 200

bspwm/.config/bspwm/wal.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+
+# Source the colors from wal
+source ~/.cache/wal/colors.sh
+
+# Set the border colors
+bspc config normal_border_color   "$color8"
+bspc config active_border_color   "$color2"
+bspc config focused_border_color  "$color7"
+bspc config presel_feedback_color "$color7"

bspwm/README.md

@@ -0,0 +1,18 @@
+# bspwm
+
+[bspwm][bspwm] is a tiling window manager for X11.
+
+## Use Cases
+
+bspwm can be used to:
+
+- Automatically tile all kinds of windows, maximizing screen estate
+- Have complete control of your window manager through simple shell commands
+- Minimize resource usage; bspwm works best without a desktop environment
+
+You should not use bspwm if:
+
+- You are using a desktop environment
+- You just want to open multiple shells (use [kitty](/kitty) or [tmux](/tmux) for this instead)
+
+[bspwm]: https://github.com/baskerville/bspwm