add linearmouse module

hosts/darwin/home-default.nix

@@ -20,6 +20,7 @@
     ../../modules/media-process.nix
     ../../modules/fonts.nix
     ../../modules/aerospace.nix
+    ../../modules/peripheral/home.nix
     ../../modules/env.nix
   ];
 
@@ -229,6 +230,15 @@
     };
   };
 
+  launchd.agents.linearmouse = {
+    enable = true;
+    config = {
+      ProgramArguments = [ "/Applications/LinearMouse.app/Contents/MacOS/LinearMouse" ];
+      RunAtLoad = true;
+      KeepAlive = false;
+    };
+  };
+
   # File associations configuration (macOS equivalent of xdg.mimeApps)
   # Uses duti to set default applications for file types via Launch Services
   home.activation.setFileAssociations = config.lib.dag.entryAfter ["writeBoundary"] ''

hosts/darwin/system-default.nix

@@ -3,6 +3,7 @@
 {
   imports = [
     ../../modules/homebrew.nix
+    ../../modules/peripheral/system.nix
     nix-homebrew.darwinModules.nix-homebrew
   ];
 
@@ -131,22 +132,4 @@
 
     /System/Library/PrivateFrameworks/SystemAdministration.framework/Resources/activateSettings -u
   '';
-
-  # Key remapping using hidutil via launchd agent
-  # This swaps Control and Caps Lock keys bidirectionally
-  launchd.user.agents.remap-keys = {
-    serviceConfig = {
-      ProgramArguments = [
-        "/usr/bin/hidutil"
-        "property"
-        "--set"
-        ''{"UserKeyMapping":[{"HIDKeyboardModifierMappingSrc":0x700000039,"HIDKeyboardModifierMappingDst":0x7000000E0},{"HIDKeyboardModifierMappingSrc":0x7000000E4,"HIDKeyboardModifierMappingDst":0x700000039}]}''
-      ];
-      RunAtLoad = true;
-      KeepAlive = false;
-      Label = "org.nixos.remap-keys";
-      StandardErrorPath = "/tmp/remap-keys.err";
-      StandardOutPath = "/tmp/remap-keys.out";
-    };
-  };
 }

modules/homebrew.nix

@@ -42,6 +42,7 @@
       "aerospace"
       "hiddenbar"
       "keycastr"
+      "linearmouse"
       "localsend"
       "maccy"
       "snipaste"

modules/peripheral/home.nix

@@ -0,0 +1,17 @@
+{ config, pkgs, ... }:
+
+{
+  home.file.".config/linearmouse/linearmouse.json".text = builtins.toJSON {
+    "$schema" = "https://app.linearmouse.org/schema/0.10.0";
+    schemes = [{
+      "if" = {
+        device.category = "mouse";
+      };
+      scrolling.reverse.vertical = true;
+      pointer = {
+        acceleration = 0;
+        speed = 0.6;
+      };
+    }];
+  };
+}

modules/peripheral/system.nix

@@ -0,0 +1,21 @@
+{ config, pkgs, ... }:
+
+{
+  # Key remapping using hidutil via launchd agent
+  # Swaps Caps Lock -> Left Control, Right Control -> Caps Lock
+  launchd.user.agents.remap-keys = {
+    serviceConfig = {
+      ProgramArguments = [
+        "/usr/bin/hidutil"
+        "property"
+        "--set"
+        ''{"UserKeyMapping":[{"HIDKeyboardModifierMappingSrc":0x700000039,"HIDKeyboardModifierMappingDst":0x7000000E0},{"HIDKeyboardModifierMappingSrc":0x7000000E4,"HIDKeyboardModifierMappingDst":0x700000039}]}''
+      ];
+      RunAtLoad = true;
+      KeepAlive = false;
+      Label = "org.nixos.remap-keys";
+      StandardErrorPath = "/tmp/remap-keys.err";
+      StandardOutPath = "/tmp/remap-keys.out";
+    };
+  };
+}