pyenv/libexec/pyenv-versions

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#!/usr/bin/env bash
# Summary: List all Python versions available to pyenv
# Usage: pyenv versions [--bare]
#
# Lists all Python versions found in `$PYENV_ROOT/versions/*'.
set -e
[ -n "$PYENV_DEBUG" ] && set -x
if [ "$1" = "--bare" ]; then
hit_prefix=""
miss_prefix=""
current_versions=()
include_system=""
else
hit_prefix="* "
miss_prefix=" "
OLDIFS="$IFS"
IFS=: current_versions=($(pyenv-version-name || true))
IFS="$OLDIFS"
include_system="1"
fi
num_versions=0
exists() {
local car="$1"
local cdar
shift
for cdar in "$@"; do
if [ "${car}" == "${cdar}" ]; then
return 0
fi
done
return 1
}
print_version() {
if exists "$1" "${current_versions[@]}"; then
echo "${hit_prefix}$1 (set by $(pyenv-version-origin))"
else
echo "${miss_prefix}$1"
fi
num_versions=$((num_versions + 1))
}
# Include "system" in the non-bare output, if it exists
if [ -n "$include_system" ] && PYENV_VERSION=system pyenv-which python >/dev/null 2>&1; then
print_version system
fi
shopt -s nullglob
for path in "${PYENV_ROOT}/versions/"*; do
if [ -d "$path" ]; then
print_version "${path##*/}"
# virtual environments created by anaconda/miniconda
for env_path in "${path}/envs/"*; do
if [ -d "${env_path}" ]; then
print_version "${env_path#${PYENV_ROOT}/versions/}"
fi
done
fi
done
shopt -u nullglob
if [ "$num_versions" -eq 0 ] && [ -n "$include_system" ]; then
echo "Warning: no Python detected on the system" >&2
exit 1
fi