[lxgr]

The Python startup latency thing makes sense, but I really don't understand why it would take `pyenv` a long time to print each line of its "usage" output (the one that appears when invoking it with `--help`) once it's already clearly in the code branch that does only that.

It feels like like it's doing heavy work between each line printed! I don't know any other cli tool doing that either.

[heavyset_go]

There's a launcher wrapper shell script + Python startup time that contributes to pyenv's slow launch times.