Make a nice common monitor database

home/common-linux.nix

@@ -1,6 +1,7 @@
 { pkgs, config, lib, ... }:
 with lib; {
   imports = [
+    ./modules/monitors.nix
     ./modules/linux/graphical
     ./modules/X11/xfce4-notifyd.nix
     ./modules/programs/discord.nix

home/kagami-pc-home.nix

@@ -48,32 +48,22 @@
       top_x = builtins.ceil (3840 / scale);
       top_y = builtins.ceil (((2160 / scale) - 1080) / 2);
     in
-    {
-      "AOC U28G2G6B PPYP2JA000013" = {
-        mode = "3840x2160@60Hz";
+    with config.common.monitors; {
+      ${home_4k.name} = {
         scale = toString scale;
-        adaptive_sync = "on";
-        # render_bit_depth = "10";
         position = "0 0";
       };
-      "AOC 24G2W1G4 ATNN21A005410" = {
-        mode = "1920x1080@144Hz";
-        adaptive_sync = "on";
+      ${home_1080.name} = {
         position = "${toString top_x} ${toString top_y}";
       };
-
-      "ViewSonic Corporation XG2402 SERIES V4K182501054" = {
-        mode = "1920x1080@144Hz";
-        adaptive_sync = "on";
-      };
     };
   nki.programs.kitty.enable = true;
   nki.programs.kitty.fontSize = 14;
-  programs.my-sway.waybar.makeBars = barWith: [
+  programs.my-sway.waybar.makeBars = with config.common.monitors; barWith: [
     # For primary
-    (barWith { extraSettings = { output = [ "AOC U28G2G6B PPYP2JA000013" ]; }; })
+    (barWith { extraSettings = { output = [ home_4k.name ]; }; })
     # For secondary, hide mpd
-    (barWith { showMedia = false; showConnectivity = false; extraSettings = { output = [ "AOC 24G2W1G4 ATNN21A005410" ]; }; })
+    (barWith { showMedia = false; showConnectivity = false; extraSettings = { output = [ home_1080.name ]; }; })
   ];
 
   # Yellow light!

home/modules/monitors.nix

@@ -0,0 +1,50 @@
+# A monitor list and common sway set up
+{ config, pkgs, lib, ... }: with lib;
+let
+  monitors = {
+    # Internal
+    # External
+    ## Work @ EPFL
+    "work" = {
+      name = "LG Electronics LG ULTRAFINE 301MAXSGHD10";
+      mode = "3840x2160@60Hz";
+      scale = "1.25";
+    };
+    "home_4k" = {
+      name = "AOC U28G2G6B PPYP2JA000013";
+      mode = "3840x2160@60Hz";
+      scale = mkDefault "1.5";
+      adaptive_sync = "on";
+      # render_bit_depth = "10";
+    };
+    "home_1080" = {
+      name = "AOC 24G2W1G4 ATNN21A005410";
+      mode = "1920x1080@144Hz";
+      adaptive_sync = "on";
+    };
+
+    "viewsonic_1080" = {
+      name = "ViewSonic Corporation XG2402 SERIES V4K182501054";
+      mode = "1920x1080@144Hz";
+      adaptive_sync = "on";
+    };
+
+  };
+
+  eachMonitor = _name: monitor: {
+    name = monitor.name;
+    value = builtins.removeAttrs monitor [ "name" ];
+  };
+in
+{
+  options.common.monitors = mkOption {
+    type = types.attrsOf types.attrs;
+    description = "A list of monitors";
+  };
+  config.common.monitors = monitors;
+  config.home.packages = mkIf config.wayland.windowManager.sway.enable (with pkgs; [ kanshi ]);
+  config.wayland.windowManager.sway.config.output = mkIf config.wayland.windowManager.sway.enable (
+    mapAttrs' eachMonitor monitors
+  );
+}
+

home/nki-x1c1.nix

@@ -82,14 +82,18 @@
   };
 
   # Multiple screen setup
-  # services.kanshi = {
-  #   enable = true;
-  #   profiles.undocked.outputs = [{ criteria = "LVDS-1"; }];
-  #   profiles.docked-hdmi.outputs = [
-  #     # { criteria = "LVDS-1"; status = "disable"; }
-  #     { criteria = "HDMI-A-1"; }
-  #   ];
-  # };
+  services.kanshi = {
+    enable = true;
+    profiles.undocked.outputs = [{ criteria = "LVDS-1"; }];
+    profiles.work-both.outputs = [
+      { criteria = "eDP-1"; position = "0,0"; status = "enable"; }
+      { criteria = config.common.monitors.work.name; position = "1920,0"; }
+    ];
+    profiles.work-one.outputs = [
+      { criteria = "eDP-1"; status = "disable"; }
+      { criteria = config.common.monitors.work.name; }
+    ];
+  };
 
   # This value determines the Home Manager release that your
   # configuration is compatible with. This helps avoid breakage

overlay.nix

@@ -17,6 +17,12 @@ let
       if builtins.compareVersions prev.sublime-music.version "0.12" < 0
       then final.unstable.sublime-music
       else prev.sublime-music;
+
+    # New stuff in Kanshi 1.4.0
+    kanshi =
+      if builtins.compareVersions prev.kanshi.version "1.4.0" < 0
+      then final.callPackage final.unstable.kanshi.override { }
+      else prev.kanshi;
   };
   overlay-imported = final: prev: {
     rnix-lsp = inputs.rnix-lsp.defaultPackage."${final.system}";