This is a very simple tool to dump out basic information about workflow runs for a GitHub repo. The structure is based on gh-subscriptions -- follow the instructions there to set up this tool (i.e., create a personal access token, etc.)

The data here was collected with something like:

./gh-workflow-runs | tee data/all_runs_raw.out

The raw output was filtered and summarized with:

grep '^{' data/all_runs_raw.out | json -ga created_at timing_billable.UBUNTU timing_billable.MACOS head_branch | awk 'NF == 4' > data/summary.out

The graph is generated with:

gnuplot < summary.gnuplot > data/summary.png

The result: