Type Specifiers

Type specifiers consist of primitive types with optional subtypes.

Supported primitive types are listed in the Muon Reference under the Objects header.

A value that can take one of many types can be specified by writing multiple types separated with a | such as int|str.

There are a few preset combinations of types:

• any - all types except null
• exe - str|file|external_program|python_installation|build_tgt|custom_tgt

dict and list must be followed by a sub-type enclosed in square brackets, e.g. dict[str|int] or list[any].

You can also wrap the entire type in glob[<type>] or listify[<type>] to get the special argument handling detailed in Muon Internals (search for TYPE_TAG_{GLOB,LISTIFY}).

Applying the glob tag to the type of a kwarg causes any unmatched keywords to be stored in that kwarg as a dict.