The instructions include the latest changes () in config file: https://github.com/nf-core/configs/blob/master/conf/cambridge.config

alternative way of getting nextflow using conda

Conda install is suggested first as a preferred method.
Singularity cache is now a bash variable.

This removes the params config that could have broken input validation.

removing cachedir in params

- singularity is now an option to load as module, because it should be loaded on login by default.
- the cache directory contains more explanation as to why it can be created