How can I make a virtual environment work with pyenv?

Try this: into the terminal,

1. write: nano ~/.bashrc

2. add in the end:

eval "$(pyenv init -)"
eval "$(pyenv virtualenv-init -)"

3. Exit and save
4. into the terminal write: source ~/.bashrc

And it's all, this worked for me.

Initialize pyenv:

exec $SHELL
eval "$(pyenv init -)"
eval "$(pyenv virtualenv-init -)"
pyenv activate my-virtualenv

To save yourself some typing add this to your .bashrc:

eval "$(pyenv init -)"
eval "$(pyenv virtualenv-init -)"