JOSS review: Consider including graphviz as dependency for installation documentation

[huddlej]

Description

I really like that the --dag argument provides a simple wrapper around Snakemake’s own dot output. As I worked through the part of the Basic Use docs that show how to build a DAG with this argument, I had to install graphviz into the snk environment I had created.

This is a pretty minor (non-blocking) user experience point, but what if the graphviz dependency was included in the initial installation command in the docs like the following?

conda create -n snk bioconda::snk conda-forge:graphviz

Alternately, you could make graphviz a dependency of the snk Bioconda recipe and keep the docs in their current simpler form.

Motivated by openjournals/joss-reviews#7410

[Wytamma]

Great Idea @huddlej! I've added graphviz as a dependancy on conda (bioconda/bioconda-recipes#52143).