Allow the implicit import function library in both config and application script

[pditommaso]

The goal of this feature is to allow the definition of custom library of functions that are automatically imported in the global scope of either the nextflow.config file and the main application script.

This would allow users to define custom helper functions without the hassle to explicitly import then as Java imports.

Additionally it should allow the usage of implicit nextflow objects i.e. params, workflow, baseDir, workDir and log when available.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[thedam]

still this feature is not valid? (functions inside config)

[risoms]

@pditommaso Has this been introduced into Nextflow? I'm coming across the same error.

[bentsherman]

The lib directory was implemented for scripts but not for config files