added a bunch of nixos modules

modules/misc/flake.nix

@@ -0,0 +1,8 @@
+{ ... }: {
+  flake.modules.nixos.flake = {
+    nix.settings.experimental-features = [
+      "nix-command"
+      "flakes"
+    ];
+  };
+}

modules/misc/keyd.nix

@@ -0,0 +1,27 @@
+{ ... }: {
+  flake.modules.nixos.keyd = {
+    services.keyd = {
+      enable = true;
+      keyboards = {
+        default = {
+          ids = [ "*" ];
+          settings = {
+            main = {
+              capslock = "esc";
+            };
+            alt = {
+              u = "G-u";
+              a = "G-a";
+              o = "G-o";
+              s = "G-s";
+              U = "G-U";
+              A = "G-A";
+              O = "G-O";
+              S = "G-S";
+            };
+          };
+        };
+      };
+    };
+  };
+}

modules/misc/misc.nix

@@ -0,0 +1,10 @@
+{ self, ... }:
+{
+  flake.modules.nixos.misc = { ... }: {
+    imports = [
+      self.modules.nixos.flake
+      self.modules.nixos.keyd
+      self.modules.nixos.stateversion
+    ];
+  };
+}

modules/misc/stateversion.nix

@@ -0,0 +1,8 @@
+{ ... }: {
+  flake.modules.nixos.stateversion = {
+    system.stateVersion = "24.05";
+  };
+  flake.modules.homeManager.stateversion = {
+    home.stateVersion = "26.05";
+  };
+}