- We used to use `# tag "linux"` in Homebrew/linuxbrew-core for the ~50
  Linux-only formulae. As of
  https://github.com/Homebrew/linuxbrew-core/commit/6578a4aa86b80816cf0553f1d45828c0072197a4,
  we're using `depends_on :linux` to have a consistent syntax between
  Linux and macOS.
- Therefore, we have to change the search string for Linux-only formulae
  that determines whether or not `brew bump-formula-pr` deletes the bottle
  line.