Fix all Nextflow dependencies in a pipeline to specific versions

[apetkau]

Problem

If plugins in Nextflow are defined without a version number (like below), then the latest version will be downloaded and used on each pipeline run. These are loaded from a JSON file maintained on https://github.com/nextflow-io/plugins/

plugins {
  id 'nf-validation'
}

This may lead to issues if there are breaking changes to new versions of a plugin.

Recommendation

On release of pipelines, all plugins should be fixed to specific versions:

plugins {
  id '[email protected]'
}

That way, fixed versions of plugins will always be used.