feat: derive desktop input and SDDM scale from host metadata

2026-04-21 22:24:41 +02:00
parent 592e70cf33
commit 4781cc60be
7 changed files with 211 additions and 2 deletions
@@ -0,0 +1,69 @@
+{
+  flake.modules.nixos.input =
+    {
+      lib,
+      config,
+      ...
+    }:
+    let
+      hostInput = config.meta.host.input;
+
+      hasAnyConfiguredValue = attrs: lib.any (value: value != null) (lib.attrValues attrs);
+      libinputScrollMethodMap = {
+        edge = "edge";
+        "no-scroll" = "none";
+        "on-button-down" = "button";
+        "two-finger" = "twofinger";
+      };
+      libinputClickMethodMap = {
+        "button-areas" = "buttonareas";
+        clickfinger = "clickfinger";
+      };
+
+      hasMouseConfig = hasAnyConfiguredValue hostInput.mouse;
+      hasTouchpadConfig = hasAnyConfiguredValue hostInput.touchpad;
+      hasPointerConfig = hasMouseConfig || hasTouchpadConfig;
+
+      mouseConfig = lib.filterAttrs (_: value: value != null) {
+        accelProfile = hostInput.mouse.accelProfile;
+        accelSpeed =
+          if hostInput.mouse.accelSpeed == null then null else toString hostInput.mouse.accelSpeed;
+        leftHanded = hostInput.mouse.leftHanded;
+        middleEmulation = hostInput.mouse.middleEmulation;
+        naturalScrolling = hostInput.mouse.naturalScrolling;
+        scrollMethod =
+          if hostInput.mouse.scrollMethod == null then
+            null
+          else
+            libinputScrollMethodMap.${hostInput.mouse.scrollMethod};
+      };
+
+      touchpadConfig = lib.filterAttrs (_: value: value != null) {
+        accelProfile = hostInput.touchpad.accelProfile;
+        accelSpeed =
+          if hostInput.touchpad.accelSpeed == null then null else toString hostInput.touchpad.accelSpeed;
+        clickMethod =
+          if hostInput.touchpad.clickMethod == null then
+            null
+          else
+            libinputClickMethodMap.${hostInput.touchpad.clickMethod};
+        disableWhileTyping = hostInput.touchpad.disableWhileTyping;
+        leftHanded = hostInput.touchpad.leftHanded;
+        middleEmulation = hostInput.touchpad.middleEmulation;
+        naturalScrolling = hostInput.touchpad.naturalScrolling;
+        scrollMethod =
+          if hostInput.touchpad.scrollMethod == null then
+            null
+          else
+            libinputScrollMethodMap.${hostInput.touchpad.scrollMethod};
+        tapping = hostInput.touchpad.tapping;
+      };
+    in
+    {
+      services.libinput = lib.mkIf hasPointerConfig {
+        enable = true;
+        mouse = mouseConfig;
+        touchpad = touchpadConfig;
+      };
+    };
+}