Create a local node repository as per
https://github.com/ankitects/anki/blob/2.1.49/docs/new-platform.md#nodejs
--- anki-2.1.49/defs.bzl
+++ anki-2.1.49_patched/defs.bzl
@@ -44,7 +44,14 @@
         python_runtime = "@python//:python",
     )
 
-    node_repositories(package_json = ["@ankidesktop//ts:package.json"])
+    native.local_repository(
+        name = "local_node",
+        path = "local_node",
+    )
+    node_repositories(
+        package_json = ["@ankidesktop//ts:package.json"],
+	vendored_node = "@local_node//:node",
+    )
 
     yarn_install(
         name = "npm",
--- /dev/null
+++ anki-2.1.49_patched/local_node/BUILD.bazel
@@ -0,0 +1 @@
+exports_files(["node/bin/node"] + glob(["node/lib/node_modules/**"]))