home/common/default.nix

@@ -53,4 +53,7 @@
     };
   };
   colorScheme = inputs.nix-colors.colorSchemes.dracula;
+
+  # Explicitly set new HM 26.05 default to silence legacy warning on older stateVersion.
+  programs.neovim.withRuby = lib.mkDefault false;
 }

home/features/coding/opencode.nix

@@ -1,4 +1,8 @@
-{inputs, ...}: {
+{
+  inputs,
+  lib,
+  ...
+}: {
   coding.agents.opencode = {
     enable = true;
     agentsInput = inputs.agents;
@@ -17,8 +21,45 @@
   coding.opencode = {
     enable = true;
 
+    ohMyOpencodeSettings = {
+      agents = {
+        sisyphus.model = "litellm/claude-opus-4-6";
+        oracle.model = "litellm/claude-sonnet-4-6";
+        librarian.model = "litellm/claude-sonnet-4-6";
+        explore.model = "litellm/claude-haiku-4-5";
+        multimodal-looker.model = "litellm/gpt-5.3-codex";
+        prometheus.model = "litellm/claude-opus-4-6";
+        metis.model = "litellm/claude-opus-4-6";
+        momus.model = "litellm/claude-opus-4-6";
+        atlas.model = "litellm/claude-sonnet-4-6";
+      };
+      categories = {
+        visual-engineering.model = "zai-coding-plan/glm-5.1";
+        ultrabrain.model = "litellm/claude-opus-4-6";
+        deep.model = "litellm/claude-sonnet-4-6";
+        artistry.model = "zai-coding-plan/glm-5.1";
+        quick.model = "litellm/claude-haiku-4-5";
+        unspecified-low.model = "litellm/claude-sonnet-4-6";
+        unspecified-high.model = "litellm/claude-opus-4-6";
+        writing.model = "zai-coding-plan/glm-5.1";
+      };
+    };
+  };
+
+  # Keep TUI settings in programs.opencode.tui to satisfy OpenCode v1.2.15+.
+  programs.opencode.tui.theme = "opencode";
+
+  # Override legacy default settings to avoid deprecated TUI keys in settings.
+  programs.opencode.settings = lib.mkForce {
+    plugin = ["oh-my-openagent"];
+    formatter = {
+      alejandra = {
+        command = ["alejandra" "-q" "-"];
+        extensions = [".nix"];
+      };
+    };
+
     # AZ-Gruppe LiteLLM endpoint + available models
-    extraSettings = {
     provider = {
       litellm = {
         npm = "@ai-sdk/openai-compatible";
@@ -82,29 +123,4 @@
       };
     };
   };
-
-    ohMyOpencodeSettings = {
-      agents = {
-        sisyphus.model = "litellm/claude-opus-4-6";
-        oracle.model = "litellm/claude-sonnet-4-6";
-        librarian.model = "litellm/claude-sonnet-4-6";
-        explore.model = "litellm/claude-haiku-4-5";
-        multimodal-looker.model = "litellm/gpt-5.3-codex";
-        prometheus.model = "litellm/claude-opus-4-6";
-        metis.model = "litellm/claude-opus-4-6";
-        momus.model = "litellm/claude-opus-4-6";
-        atlas.model = "litellm/claude-sonnet-4-6";
-      };
-      categories = {
-        visual-engineering.model = "zai-coding-plan/glm-5.1";
-        ultrabrain.model = "litellm/claude-opus-4-6";
-        deep.model = "litellm/claude-sonnet-4-6";
-        artistry.model = "zai-coding-plan/glm-5.1";
-        quick.model = "litellm/claude-haiku-4-5";
-        unspecified-low.model = "litellm/claude-sonnet-4-6";
-        unspecified-high.model = "litellm/claude-opus-4-6";
-        writing.model = "zai-coding-plan/glm-5.1";
-      };
-    };
-  };
 }

overlays/default.nix

@@ -27,7 +27,7 @@
 
   temp-packages = final: _prev: {
     temp = import inputs.nixpkgs-9e9486b {
-      system = final.system;
+      system = final.stdenv.hostPlatform.system;
       config.allowUnfree = true;
     };
   };