Support select()

See https://bazel.build/docs/configurable-attributes

refresh_compile_commands.bzl

@@ -68,6 +68,10 @@ def refresh_compile_commands(
  # In Python, `type(x) == y` is an antipattern, but [Starlark doesn't support inheritance](https://bazel.build/rules/language), so `isinstance` doesn't exist, and this is the correct way to switch on type.
  if not targets: # Default to all targets in main workspace
  targets = {"@//...": ""}
+ elif type(targets) == "select": # Allow select: https://bazel.build/reference/be/functions#select
+ # Pass select() to _expand_template to make it work
+ # see https://bazel.build/docs/configurable-attributes#faq-select-macro
+ pass
  elif type(targets) == "list": # Allow specifying a list of targets w/o arguments
  targets = {target: "" for target in targets}
  elif type(targets) != "dict": # Assume they've supplied a single string/label and wrap it