nix-config/home/desktop-river/init.nix

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{ config, pkgs, ... }:
let
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wallpapers = "${config.home.homeDirectory}/Images/wallpapers/enabled";
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shell = "${pkgs.dash}/bin/dash";
riverctl = "${pkgs.river}/bin/riverctl";
rivertile = "${pkgs.river}/bin/rivertile";
foot = "${pkgs.foot}/bin/foot";
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bemenu-run = "${pkgs.bemenu}/bin/bemenu-run";
waybar = "${pkgs.waybar}/bin/waybar";
swaybg = "${pkgs.swaybg}/bin/swaybg";
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seq = "${pkgs.coreutils}/bin/seq";
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playerctl = "${pkgs.playerctl}/bin/playerctl";
pamixer = "${pkgs.pamixer}/bin/pamixer";
light = "${pkgs.light}/bin/light";
eject = "${pkgs.util-linux}/bin/eject";
find = "${pkgs.findutils}/bin/find";
shuf = "${pkgs.coreutils}/bin/shuf";
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in {
home.file.river_init = {
executable = true;
target = "${config.xdg.configHome}/river/init";
text = ''
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#!${shell}
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# Super+Return to start an instance of foot (https://codeberg.org/dnkl/foot)
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${riverctl} map normal Super Return spawn ${foot}
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${riverctl} map normal Super R spawn ${bemenu-run}
# Super+Shift+C to close the focused view
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${riverctl} map normal Super+Shift C close
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# Super+Shift+Esc to exit river
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${riverctl} map normal Super+Shift Escape exit
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# Super+J and Super+K to focus the next/previous view in the layout stack
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${riverctl} map normal Super J focus-view next
${riverctl} map normal Super K focus-view previous
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# Super+Shift+J and Super+Shift+K to swap the focused view with the next/previous
# view in the layout stack
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${riverctl} map normal Super+Shift J swap next
${riverctl} map normal Super+Shift K swap previous
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# Super+E and Super+W to focus the next/previous output
${riverctl} map normal Super E focus-output next
${riverctl} map normal Super W focus-output previous
# Super+Shift+{W,E} to send the focused view to the next/previous output
${riverctl} map normal Super+Shift W send-to-output next
${riverctl} map normal Super+Shift W send-to-output previous
# Super+Shift+Return to bump the focused view to the top of the layout stack
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${riverctl} map normal Super+Shift Return zoom
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# Super+H and Super+L to decrease/increase the main ratio of rivertile(1)
${riverctl} map normal Super H send-layout-cmd rivertile "main-ratio -0.05"
${riverctl} map normal Super L send-layout-cmd rivertile "main-ratio +0.05"
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# Super+Shift+Comma and Super+Shift+Period. to increment/decrement the main count of rivertile(1)
${riverctl} map normal Super+Shift Comma send-layout-cmd rivertile "main-count +1"
${riverctl} map normal Super+Shift Period send-layout-cmd rivertile "main-count -1"
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# Super+Alt+{H,J,K,L} to move views
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${riverctl} map normal Super+Alt H move left 100
${riverctl} map normal Super+Alt J move down 100
${riverctl} map normal Super+Alt K move up 100
${riverctl} map normal Super+Alt L move right 100
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# Super+Alt+Control+{H,J,K,L} to snap views to screen edges
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${riverctl} map normal Super+Alt+Control H snap left
${riverctl} map normal Super+Alt+Control J snap down
${riverctl} map normal Super+Alt+Control K snap up
${riverctl} map normal Super+Alt+Control L snap right
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# Super+Alt+Shift+{H,J,K,L} to resize views
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${riverctl} map normal Super+Alt+Shift H resize horizontal -100
${riverctl} map normal Super+Alt+Shift J resize vertical 100
${riverctl} map normal Super+Alt+Shift K resize vertical -100
${riverctl} map normal Super+Alt+Shift L resize horizontal 100
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# Super + Left Mouse Button to move views
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${riverctl} map-pointer normal Super BTN_LEFT move-view
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# Super + Right Mouse Button to resize views
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${riverctl} map-pointer normal Super BTN_RIGHT resize-view
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# Super + Middle Mouse Button to toggle float
${riverctl} map-pointer normal Super BTN_MIDDLE toggle-float
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for i in $(${seq} 1 9)
do
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tags=$((1 << ($i - 1)))
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# Super+[1-9] to focus tag [0-8]
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${riverctl} map normal Super $i set-focused-tags $tags
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# Super+Shift+[1-9] to tag focused view with tag [0-8]
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${riverctl} map normal Super+Shift $i set-view-tags $tags
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# Super+Ctrl+[1-9] to toggle focus of tag [0-8]
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${riverctl} map normal Super+Control $i toggle-focused-tags $tags
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# Super+Shift+Ctrl+[1-9] to toggle tag [0-8] of focused view
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${riverctl} map normal Super+Shift+Control $i toggle-view-tags $tags
done
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# Super+0 to focus all tags
# Super+Shift+0 to tag focused view with all tags
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all_tags=$(((1 << 32) - 1))
${riverctl} map normal Super 0 set-focused-tags $all_tags
${riverctl} map normal Super+Shift 0 set-view-tags $all_tags
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# Super+T to toggle float
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${riverctl} map normal Super T toggle-float
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# Super+M to toggle fullscreen
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${riverctl} map normal Super M toggle-fullscreen
# Super+{Up,Right,Down,Left} to change layout orientation
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${riverctl} map normal Super Up send-layout-cmd rivertile "main-location top"
${riverctl} map normal Super Right send-layout-cmd rivertile "main-location right"
${riverctl} map normal Super Down send-layout-cmd rivertile "main-location bottom"
${riverctl} map normal Super Left send-layout-cmd rivertile "main-location left"
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# Declare a passthrough mode. This mode has only a single mapping to return to
# normal mode. This makes it useful for testing a nested wayland compositor
${riverctl} declare-mode passthrough
# Super+F11 to enter passthrough mode
${riverctl} map normal Super F11 enter-mode passthrough
# Super+F11 to return to normal mode
${riverctl} map passthrough Super F11 enter-mode normal
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# Various media key mapping examples for both normal and locked mode which do
# not have a modifier
for mode in normal locked
do
# Eject the optical drive (well if you still have one that is)
${riverctl} map $mode None XF86Eject spawn '${eject} -T'
# Control pulse audio volume with pamixer (https://github.com/cdemoulins/pamixer)
${riverctl} map $mode None XF86AudioRaiseVolume spawn '${pamixer} -i 5'
${riverctl} map $mode None XF86AudioLowerVolume spawn '${pamixer} -d 5'
${riverctl} map $mode None XF86AudioMute spawn '${pamixer} --toggle-mute'
# Control MPRIS aware media players with playerctl (https://github.com/altdesktop/playerctl)
${riverctl} map $mode None XF86AudioMedia spawn '${playerctl} play-pause'
${riverctl} map $mode None XF86AudioPlay spawn '${playerctl} play-pause'
${riverctl} map $mode None XF86AudioPrev spawn '${playerctl} previous'
${riverctl} map $mode None XF86AudioNext spawn '${playerctl} next'
# Control screen backlight brightness with light (https://github.com/haikarainen/light)
${riverctl} map $mode None XF86MonBrightnessUp spawn '${light} -A 5'
${riverctl} map $mode None XF86MonBrightnessDown spawn '${light} -U 5'
done
# Set background and border color
${riverctl} background-color 0x282828
${riverctl} border-color-focused 0x458588
${riverctl} border-color-unfocused 0x504945
${riverctl} border-width 3
${riverctl} focus-follows-cursor normal
# Set keyboard repeat rate
${riverctl} set-repeat 50 300
# Make certain views start floating
${riverctl} float-filter-add app-id float
${riverctl} float-filter-add title "popup title with spaces"
# Set app-ids and titles of views which should use client side decorations
${riverctl} csd-filter-add app-id "gedit"
${riverctl} spawn "dbus-update-activation-environment --systemd WAYLAND_DISPLAY XDG_CURRENT_DESKTOP=river"
${riverctl} spawn "systemctl --user import-environment WAYLAND_DISPLAY XDG_CURRENT_DESKTOP=river"
${riverctl} spawn "${waybar}"
${riverctl} spawn '${swaybg} --image "$(${find} ${wallpapers} -type f | ${shuf} -n 1)" --mode fill'
# Set the default layout generator to be rivertile and start it.
# River will send the process group of the init executable SIGTERM on exit.
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${riverctl} default-layout rivertile
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${rivertile} -view-padding 0 -outer-padding 0 &
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'';
};
}