chore: flake update

overlays/default.nix

@@ -63,6 +63,32 @@
   # Factory: not a proper overlay itself — takes system to avoid the infinite
   # recursion that occurs when accessing final/prev.system while the fixed-point
   # is still being computed.  Exposed via outputs.lib, not outputs.overlays.
+  #
+  # Filters out the 16 internal helpers (marked `passthru.hideFromDocs = true`
+  # upstream) that would otherwise clobber nixpkgs attributes. Most critically
+  # this excludes `buildNpmPackage` — llm-agents' buildNpmPackage is a guarded
+  # re-export whose `__functor`/`override` interaction with makeOverridable
+  # breaks any package (e.g. nixpkgs' webcord) that calls
+  # `buildNpmPackage.override { nodejs = ...; }`. See numtide/llm-agents.nix
+  # commit 40490259 and the wrapper at packages/buildNpmPackage/package.nix.
   mkLlmAgentsOverlay = system: _final: _prev:
-    inputs.llm-agents.packages.${system} or {};
+    builtins.removeAttrs (inputs.llm-agents.packages.${system} or {}) [
+      # Internal helpers from packages/* marked hideFromDocs upstream:
+      "antigravity"
+      "auto-claude"
+      "buildNpmPackage" # ← the culprit; breaks webcord's `buildNpmPackage.override { nodejs = ...; }`
+      "bun2nix"
+      "darwinOpenptyHook"
+      "default" # fzf launcher; collides with nothing in nixpkgs but kept out for hygiene
+      "dolt" # collides with nixpkgs.dolt (Dolt database); not used in this config
+      "flake-inputs"
+      "forge"
+      "formatelf"
+      "formatter" # collides conceptually with pkgs.formatter; not used here
+      "go-bin"
+      "unpinCargoMsrvHook"
+      "unpinGoModVersionHook"
+      "versionCheckHomeHook"
+      "wrapBuddy"
+    ];
 }