purge_old_gh_labels.sh

#!/bin/bash

purge_before_date="2022-01-01"
labels_to_remove=("priority/high", "priority/medium")

for label in "${labels_to_remove[@]}"; do
    echo "Removing ${label} labels:"
    echo ""

    issues_json=$(gh issue list -S "is:open is:issue label:${label} created:<${purge_before_date}" --limit 200 --json number,title)

    while read issue_json; do
        number=$(echo "${issue_json}" | jq -r ".number")
        title=$(echo "${issue_json}" | jq -r ".title")

        gh issue edit "${number}" --remove-label "${label}"

        echo "${number}: ${title}"
        sleep 1
    done < <(echo "${issues_json}" | jq -c ".[]")
done