home-manager/programs/desktop/sway/default.nix

{
  config,
  lib,
  pkgs,
  fonts,
  accentColourName,
  altAccentColourName,
  ...
}: {
  programs.waybar.systemd.target = lib.mkIf config.wayland.windowManager.sway.systemd.enable "sway-session.target";
  services.kanshi.systemdTarget = lib.mkIf config.wayland.windowManager.sway.systemd.enable "sway-session.target";
  wayland.windowManager.sway = {
    enable = true;
    package =
      pkgs.swayfx.overrideAttrs
      (old: {passthru.providedSessions = ["sway"];});
    swaynag.enable = true;
    systemd.enable = true;
    xwayland = true;
    checkConfig = false;
    config = {
      input = {
        "*" = {
          xkb_layout = "gb";
          xkb_options = "ctrl:nocaps";
        };
        "type:touchpad" = {
          tap = "enabled";
          natural_scroll = "enabled";
        };
      };
      seat = {
        "seat0" = {
          xcursor_theme = with config.gtk.cursorTheme; "${name} ${toString size}";
        };
      };
      modifier = "Mod4";
      terminal = "${config.programs.alacritty.package}/bin/alacritty";
      menu = "${config.programs.fuzzel.package}/bin/fuzzel";
      workspaceAutoBackAndForth = true;
      bars = [];
      gaps = {
        inner = 5;
        outer = 0;
      };
      fonts = {
        names = [fonts.monospace.name];
        style = "regular";
        size = fonts.sizes.desktop * 1.0;
      };
      colors = let
        sc = config.scheme.withHashtag;
        text = toString sc.base05;
        indicator = toString sc.${altAccentColourName};
        background = toString sc.base00;
      in {
        inherit background;
        focused = let
          border = toString sc.${accentColourName};
        in {
          inherit background text indicator border;
          childBorder = border;
        };
        focusedInactive = let
          border = toString sc.base04;
        in {
          inherit background text indicator border;
          childBorder = border;
        };
        unfocused = let
          border = toString sc.base03;
        in {
          inherit background text indicator border;
          childBorder = border;
        };
        urgent = let
          border = toString sc.red;
        in {
          inherit background text indicator border;
          childBorder = border;
        };
      };
      startup = [
        {command = "${pkgs.libsForQt5.polkit-kde-agent}/libexec/polkit-kde-authentication-agent-1";}
        {command = "${pkgs.protonmail-bridge}/bin/protonmail-bridge -n";}
        {command = "set-background";}
      ];
      window = {
        border = 1;
        titlebar = false;
        commands = [
          {
            criteria.window_role = "(?:pop-up|bubble|dialog)";
            command = "floating enable";
          }
          {
            criteria.app_id = "(?:org\.kde\.polkit-kde-authentication-agent-1|Pinentry|pavucontrol|\.blueman-manager-wrapped|nm-connection-editor)";
            command = "floating enable";
          }
          {
            criteria.class = "(?:[Mm]atplotlib|.*\.py|Idl)";
            command = "floating enable";
          }
          {
            # Catch-all for file dialog windows
            criteria.title = "(?:Open|Save) (?:File|Folder|As)";
            command = "floating enable, resize set width 1030 height 710";
          }
          {
            # Inhibit idle when watching vidoes
            criteria.app_id = "(?:firefox|mpv)";
            command = "inhibit_idle fullscreen";
          }
          {
            # Window rules for game sessions.
            # Note: controllers don't reset idle timer
            criteria.class = "(?:steam_app|Minecraft).*";
            command = "floating enable, fullscreen enable, inhibit_idle focus";
          }
        ];
      };
      floating.border = 1;
      keybindings = with config; let
        modifier = wayland.windowManager.sway.config.modifier;
      in
        lib.mkOptionDefault {
          # Movement
          "${modifier}+comma" = "workspace prev";
          "${modifier}+period" = "workspace next";
          "${modifier}+shift+comma" = "move workspace prev";
          "${modifier}+shift+period" = "move workspace next";
          "${modifier}+bracketleft" = "move workspace to output left";
          "${modifier}+bracketright" = "move workspace to output right";

          # Function keys
          ## Sound
          "XF86AudioMute" = "exec ${services.avizo.package}/bin/volumectl %";
          "XF86AudioMicMute" = "exec ${services.avizo.package}/bin/volumectl -m %";
          "XF86AudioRaiseVolume" = "exec ${services.avizo.package}/bin/volumectl -u + 5";
          "XF86AudioLowerVolume" = "exec ${services.avizo.package}/bin/volumectl -u - 5";

          ## Playback
          "XF86AudioPlay" = "exec ${pkgs.playerctl}/bin/playerctl play-pause";
          "XF86AudioStop" = "exec ${pkgs.playerctl}/bin/playerctl play-pause";
          "XF86AudioPrev" = "exec ${pkgs.playerctl}/bin/playerctl previous";
          "XF86AudioNext" = "exec ${pkgs.playerctl}/bin/playerctl next";

          ## Brightness
          "XF86MonBrightnessUp" = "exec ${services.avizo.package}/bin/lightctl + 5";
          "XF86MonBrightnessDown" = "exec ${services.avizo.package}/bin/lightctl - 5";

          # System utilities
          "Mod4+Mod1+l" = "exec swaylockfx";
          "${modifier}+z" = "exec ${pkgs.mako}/bin/makoctl dismiss -a";
          "${modifier}+Shift+z" = "exec ${pkgs.mako}/bin/makoctl restore";
          "${modifier}+Shift+p" = "exec ${programs.wlogout.package}/bin/wlogout";
          "${modifier}+Shift+Return" = "exec ${programs.emacs.finalPackage}/bin/emacsclient -c";
        };
    };
    extraConfig = ''
      bindgesture swipe:right workspace prev
      bindgesture swipe:left workspace next
      corner_radius 10
      blur enable
      blur_xray disable
      blur_passes 3
      blur_radius 5
      corner_radius 10
      shadows disable
      shadow_blur_radius 0
      layer_effects "system-menu" blur enable; shadows disable
      layer_effects "gtk-layer-shell" blur enable; shadows disable
      layer_effects "notifications" blur enable; shadows disable
      layer_effects "launcher" blur enable; shadows disable
      layer_effects "logout_dialog" blur enable; shadows disable
      layer_effects "waybar" blur enable; shadows disable
      layer_effects "avizo" blur enable; shadows disable
      titlebar_separator enable
      scratchpad_minimize enable
    '';
  };
}