multi monitor setup with autorandr

flake.lock

@@ -845,7 +845,8 @@
         "private_assets": "private_assets",
         "retiolum": "retiolum",
         "secrets": "secrets",
-        "sops-nix": "sops-nix"
+        "sops-nix": "sops-nix",
+        "thinkpad-dock": "thinkpad-dock"
       }
     },
     "rotate-text": {
@@ -949,6 +950,22 @@
         "type": "github"
       }
     },
+    "thinkpad-dock": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1617280004,
+        "narHash": "sha256-nhmYoiHNHk64CjgG7dutVpmrWpdwE3+4G8fGWNANTi8=",
+        "owner": "oxzi",
+        "repo": "nixos-thinkpad-dock",
+        "rev": "c18fe4116b20886c112acec19294e9b96e919526",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxzi",
+        "repo": "nixos-thinkpad-dock",
+        "type": "github"
+      }
+    },
     "ts-fold": {
       "flake": false,
       "locked": {

flake.nix

@@ -59,7 +59,10 @@
       url = "github:krebs/retiolum";
       flake = false;
     };
-
+    thinkpad-dock = {
+      url = "github:oxzi/nixos-thinkpad-dock";
+      flake = false;
+    };
   };
 
   outputs =
@@ -80,6 +83,7 @@
     , secrets
     , sops-nix
     , retiolum
+    , thinkpad-dock
     }:
     let
       system = "x86_64-linux";

nixos/machines/sterni/packages.nix

@@ -26,6 +26,8 @@ in
       };
     }))
 
+    autorandr
+
     (nextcloudSync "InstantUpload")
     (nextcloudSync "Pictures")
     (nextcloudSync "Unterlagen")

nixos/system/desktop/home-manager/i3.nix

@@ -268,6 +268,44 @@ in
 
           "${cfg.config.modifier}+r" = "mode resize";
 
+          # multiple monitors
+          # autorandr --save docked   # to save setup
+          # autorandr --save undocked # to save setup
+          # autorandr --change        # automatically detects the setup
+          "${cfg.config.modifier}+BackSpace" =
+            let
+              xmodmapConfig = pkgs.writeText "xmodmap" ''
+                !
+                ! Swap Caps_Lock and Control_L
+                !
+
+                ! replace capslock keys with Escape Keys
+                ! remove Lock = Caps_Lock
+                clear Lock
+                add Lock = Scroll_Lock
+
+                keysym Caps_Lock = Escape
+
+                ! Set Right function Key to Windows-key
+                keycode 135 = Super_R NoSymbol Super_R NoSymbol Super_R
+
+                ! Map umlauts to RIGHT ALT + <key>
+                keycode 108 = Mode_switch
+                keysym e = e E EuroSign
+                keysym c = c C cent
+                keysym a = a A adiaeresis Adiaeresis
+                keysym o = o O odiaeresis Odiaeresis
+                keysym u = u U udiaeresis Udiaeresis
+                keysym s = s S ssharp
+              '';
+              script = pkgs.writers.writeBash "autorandr" ''
+                ${pkgs.autorandr}/bin/autorandr --change
+                ${pkgs.xorg.xmodmap}/bin/xmodmap ${xmodmapConfig}
+                ${backgroundCommand}
+              '';
+            in
+            "exec ${toString script}";
+
           # like vimperator
 
           "${cfg.config.modifier}+a" = "exec ${pkgs.i3-easyfocus}/bin/i3-easyfocus";