Update MaxBin2: allow multiple abund files

[d4straub]

Currently this modules allows the input of only one abundance file with one abundance column. This adds a possibility to use multiple abundance files (each with the contig abundance of one sample).
Related to nf-core/mag#690

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[d4straub]

Interesting, the problem is "modules/nf-core/maxbin2/meta.yml::$.input[0][3].abund.type: 'file or list of files' is not one of ['map', 'file', 'directory', 'string', 'integer', 'float', 'boolean', 'list']", so when I accept a file or a list of files, how shall I write that here? :D

[jfy133]

Interesting, the problem is "modules/nf-core/maxbin2/meta.yml::$.input[0][3].abund.type: 'file or list of files' is not one of ['map', 'file', 'directory', 'string', 'integer', 'float', 'boolean', 'list']", so when I accept a file or a list of files, how shall I write that here? :D

I would say a list a list of one file is still technically a list 😬

[d4straub]

Hm, but according to groovy, abund instanceof List is false for one file, true for multiple. But if you are fine with list then I am as well!

[jfy133]

@nf-core-bot fix linting

[github-actions]

Nothing for me to do here! 🤷
This is probably because the linting errors come from nf-core lint and have to be fixed manually (or with nf-core lint --fix).

[jfy133]

Hm, but according to groovy, abund instanceof List is false for one file, true for multiple. But if you are fine with list then I am as well!

Yeah but the meta.yaml is not used for anything, more for documenting, and I would rather go for the more complex input for clarity