Make sure you have checked all steps below.

### Prerequisite
* [ ] Please consider implementing the feature as a hook script or plugin as a first step.
  * pyenv has some powerful support for plugins and hook scripts. Please refer to [Authoring plugins](https://github.com/pyenv/pyenv/wiki/Authoring-plugins) for details and try to implement it as a plugin if possible.
* [ ] My PR addresses the following pyenv issue (if any)
  - Closes https://github.com/pyenv/pyenv/issues/XXXX

### Description
- [ ] Here are some details about my PR

### Tests
- [ ] My PR adds the following unit tests (if any)