snk 0.22.2

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SNK (Snek)

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Documentation: https://snk.wytamma.com

Source Code: https://github.com/Wytamma/snk

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Snk (pronounced snek) is a Snakemake workflow management system. Snk allows you to install Snakemake workflows as dynamically generated Command Line Interfaces (CLIs). Using a workflow as a CLI increases its interoperability and allows complex workflows to be used as modular components in a larger system.

Installation

pip install snk

Basic Use

Install a workflow as a CLI

The snk install command can be use to install Snakemake workflows as CLIs. An index of publicly available Snakemake workflows can be found on the snakemake workflow catalog. Snk can install Snakemake workflows from these GitHub repos.

Install the dna-seq-gatk-variant-calling workflow (v2.1.1) as variant-calling.

snk install snakemake-workflows/dna-seq-gatk-variant-calling --name variant-calling -t v2.1.1

Successfully installed variant-calling (v2.1.1)!

Inspect the CLI

Snk will automatically create a fully featured CLI for the Snakemake workflow.

variant-calling --help

View run options

Workflow configuration options are automatically generated from the snakemake config file.

variant-calling run --help

Create a DAG

Here we use the .test resources included in the workflow to create the DAG.

variant-calling run -r .test/config -r .test/data --dag dag.pdf

Configure

Snk will dynamically generate config options for the CLI. For example if your config.yaml file has the option fasta: null you can set this option with --fasta.

variant-calling run --fasta example.fa

You can also configure the workflow using a config file.

variant-calling config --pretty # print the config 
variant-calling config > config.yml # save the config 
variant-calling run --config config.yml # run with config 

Read the documentation for more information.

License

snk is distributed under the terms of the MIT license.