standaloneだとうまく動かなくて、npmで入れた方がいいみたい。heroku-cliをFreeBSDで使うには - Qiita The Heroku CLI | Heroku Dev Center This installation method is required for users on ARM, BSD, and Arch Linux. You must have node and npm inst…

/etc/make.confのDEFAULT_VERSIONSに DEFAULT_VERSIONS=python=3.5 python3=3.5 とか書けばいいらしい。https://wiki.freebsd.org/DEFAULT_VERSIONS