In case an option in a Manifest uses a type which is not allowed, the error message is highly cryptic and doesn't help to solve the issue

For example, sim_pre_cmd is set to a list:

sim_pre_cmd = ['make registers', 'python $PROJECT_ROOT_PATH/projects/lib/register_check/generate_registers_tb.py']

By default this is not supported. The error message given is:

python -m hdlmake.__main__  --log warning list-mods
ERROR	__main__.py:62: main()	Given option (<type 'list'>) doesn't match specified types: ([<type 'str'>])