Set up autostart layout for i3

hosts/desktop/home.nix

@@ -1,5 +1,5 @@
 { ... }:
 
 {
-  imports = [ (import ./i3.nix) ];
+  imports = [ (import ./i3) ];
 }

hosts/desktop/i3.nix

@@ -1,14 +0,0 @@
-{ ... }:
-
-{
-  xsession.windowManager.i3.config.workspaceOutputAssign = [
-    {
-      output = "HDMI-0";
-      workspace = "1";
-    }
-    {
-      output = "DVI-D-0";
-      workspace = "2";
-    }
-  ];
-}

hosts/desktop/i3/default.nix

@@ -0,0 +1,23 @@
+{ ... }:
+
+{
+  xsession.windowManager.i3.config = {
+    startup = [
+      {
+        command = ''i3-msg workspace 1 && (firefox &) && i3-msg "workspace 2; append_layout ${./tree.json}; open" && (for i in {1..4}; do i3-msg move left; done) && (discord &) && firefox --new-window https://youtube.com && i3-msg workspace 1'';
+        always = true;
+        notification = false;
+      }
+    ];
+    workspaceOutputAssign = [
+      {
+        output = "HDMI-0";
+        workspace = "1";
+      }
+      {
+        output = "DVI-D-0";
+        workspace = "2";
+      }
+    ];
+  };
+}

hosts/desktop/i3/tree.json

@@ -0,0 +1,16 @@
+// vim:ts=4:sw=4:et
+{
+    "layout": "splitv",
+    "type": "con",
+    "nodes": [
+        {
+            "swallows": [{ "class": "^firefox$" }],
+            "type": "con"
+        },
+        {
+            "swallows": [{ "class": "^discord$" }],
+            "type": "con"
+        }
+    ]
+}
+