pyenv-virtualenvs and pyenv-virtualenv-prefix error when installed with symlink

[andrew-christianson]

The construction . "${BASH_SOURCE%/*}"/../libexec/pyenv-virtualenv-realpath, on line 9 of pyenv-virtualenv-prefix and line 10 of pyenv-virtualenvs results in an error if the script is symlinked into a directory on PATH (e.g. installed through Homebrew). Specifically, in the case of v1.1.5 installed through brew install --HEAD pyenv-virtualenv it reports:

/usr/local/bin/pyenv-virtualenvs: line 10: /usr/local/bin/../libexec/pyenv-virtualenv-realpath: No such file or directory

This can be solved by following the symlink if ${BASH_SOURCE} is indeed a link before expanding the path to pyenv-virtualenv-realpath; I'll submit a PR to that effect if that seems like the appropriate solution.

[zzhou612]

Encountered the same problem.