how to get path to config yaml?

I have it here `/nix/store/r8342phg32394gppfmmqxwdynhh4chj3-devnet-xc.yaml`


I want to run `process-compose down /nix/store/r8342phg32394gppfmmqxwdynhh4chj3-devnet-xc.yaml`

But seems config is hidden inside package, so I in theory can find deps of package, and find yaml and that yaml would be the thing. So need to parse package stucture for this.