dev-cmd/bump*: limit the number of open PRs to 15.

Library/Homebrew/dev-cmd/bump-cask-pr.rb

@@ -93,6 +93,8 @@ def run
  #{Formatter.url("#{cask.tap.remote}/blob/master/.github/autobump.txt")}
  EOS
 
+ odie "You have too many PRs open: close or merge some first!" if GitHub.too_many_open_prs?(cask.tap)
+
  new_version = BumpVersionParser.new(
  general: args.version,
  intel: args.version_intel,

Library/Homebrew/dev-cmd/bump-formula-pr.rb

@@ -120,6 +120,8 @@ def run
  #{Formatter.url("#{formula.tap.remote}/blob/master/.github/autobump.txt")}
  EOS
 
+ odie "You have too many PRs open: close or merge some first!" if GitHub.too_many_open_prs?(formula.tap)
+
  formula_spec = formula.stable
  odie "#{formula}: no stable specification found!" if formula_spec.blank?
 

Library/Homebrew/dev-cmd/bump.rb

@@ -499,6 +499,10 @@ def retrieve_and_display_info_and_open_pr(formula_or_cask, name, repositories, a
 
  return unless args.open_pr?
 
+ if GitHub.too_many_open_prs?(formula_or_cask.tap)
+ odie "You have too many PRs open: close or merge some first!"
+ end
+
  if repology_latest.is_a?(Version) &&
  repology_latest > current_version.general &&
  repology_latest > new_version.general &&

Library/Homebrew/utils/github.rb

@@ -863,4 +863,60 @@
 
  [author_count, committer_count]
  end
+
+ MAXIMUM_OPEN_PRS = 15
+
+ sig { params(tap: T.nilable(Tap)).returns(T::Boolean) }
+ def self.too_many_open_prs?(tap)
+ # We don't enforce unofficial taps.
+ return false if tap.nil? || !tap.official?
+
+ # BrewTestBot can open as many PRs as it wants.
+ return false if ENV["HOMEBREW_TEST_BOT_AUTOBUMP"].present?
+
+ odie "Cannot count PRs, HOMEBREW_NO_GITHUB_API set!" if Homebrew::EnvConfig.no_github_api?
+
+ query = <<~EOS
+ query {
+ viewer {
+ login
+ pullRequests(first: 100, states: OPEN) {
+ nodes {
+ headRepositoryOwner {
+ login
+ }
+ }
+ pageInfo {
+ hasNextPage
+ }
+ }
+ }
+ }
+ EOS
+ graphql_result = API.open_graphql(query)
+ puts
+
+ github_user = graphql_result.dig("viewer", "login")
+ odie "Cannot count PRs, cannot get GitHub username from GraphQL API!" if github_user.blank?
+
+ # BrewTestBot can open as many PRs as it wants.
+ return false if github_user.casecmp("brewtestbot").zero?
+
+ prs = graphql_result.dig("viewer", "pullRequests", "nodes")
+ more_graphql_data = graphql_result.dig("viewer", "pullRequests", "pageInfo", "hasNextPage")
+ return false if !more_graphql_data && prs.length < MAXIMUM_OPEN_PRS
+
+ homebrew_prs_count = graphql_result.dig("viewer", "pullRequests", "nodes").count do |pr|
+ pr["headRepositoryOwner"]["login"] == "Homebrew"
+ end
+ return true if homebrew_prs_count >= MAXIMUM_OPEN_PRS
+ return false unless more_graphql_data
+ return false if tap.nil?
+
+ url = "#{API_URL}/repos/#{tap.full_name}/issues?state=open&creator=#{github_user}"
+ rest_result = API.open_rest(url)
+ repo_prs_count = rest_result.count { |issue_or_pr| issue_or_pr.key?("pull_request") }
+
+ repo_prs_count >= MAXIMUM_OPEN_PRS
+ end
 end