Snakemake version
7.24

Describe the bug
In params, I have the following line to specify that the config file for multiqc is in the following location (which is specified relative to where the Snakefile is located):
config = workflow.source_path("tools/multiqc_config.yaml")

However, workflow.source_path does not work as expected, an error is thrown (see below)

Logs
Error: Invalid value for '-c' / '--config': Path '/home/bla/.cache/snakemake/snakemake/source-cache/runtime-cache/tmpoe2bb5nk/file/{full_path}/tools/multiqc_config.yaml' does not exist.

Here, I replaced the beginning of the full path with {full_path}.

Does it work differently than what I expected and understood from the documentation?