https://www.pgbouncer.org/install.html
Hint: I have no idea if the installation step for Pandoc is needed or not. If you get errors with Pandoc, don’t pull pgbouncer from Git, but download a release from https://github.com/pgbouncer/pgbouncer/releases.
PgBouncer 1.24.1 はOK
PgBouncer 1.25.1 はpandocがないとビルドエラー
