Implement new structure

scripts/preinstall.sh

@@ -0,0 +1,21 @@
+#!/usr/bin/env sh
+# preinstall.sh -- Prepare VS Code.
+
+set -eu
+
+main() {
+  cd "$(dirname "${0}")/.."
+
+# Ensure submodules are cloned and up to date.
+  git submodule update --init
+
+  # Try patching but don't worry too much if it fails. It's possible VS Code has
+  # already been patched.
+  yarn patch:apply || echo "Unable to patch; assuming already patched"
+
+  # Install VS Code dependencies.
+  cd ./lib/vscode
+  yarn
+}
+
+main "$@"