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|
#!/usr/bin/env bash
# Summary: List all Python versions available to pyenv
# Usage: pyenv versions [--bare] [--skip-aliases] [--skip-envs]
#
# Lists all Python versions found in `$PYENV_ROOT/versions/*'.
set -e
[ -n "$PYENV_DEBUG" ] && set -x
unset bare skip_aliases skip_envs
# Provide pyenv completions
for arg; do
case "$arg" in
--complete )
echo --bare
echo --skip-aliases
echo --skip-envs
exit ;;
--bare ) bare=1 ;;
--skip-aliases ) skip_aliases=1 ;;
--skip-envs ) skip_envs=1 ;;
* )
pyenv-help --usage versions >&2
exit 1
;;
esac
done
versions_dir="${PYENV_ROOT}/versions"
if ! enable -f "${BASH_SOURCE%/*}"/pyenv-realpath.dylib realpath 2>/dev/null; then
if [ -n "$PYENV_NATIVE_EXT" ]; then
echo "pyenv: failed to load \`realpath' builtin" >&2
exit 1
fi
READLINK=$(type -P readlink)
if [ -z "$READLINK" ]; then
echo "pyenv: cannot find readlink - are you missing GNU coreutils?" >&2
exit 1
fi
resolve_link() {
$READLINK "$1"
}
realpath() {
local path="$1"
local name
# Use a subshell to avoid changing the current path
(
while [ -n "$path" ]; do
name="${path##*/}"
[ "$name" = "$path" ] || cd "${path%/*}"
path="$(resolve_link "$name" || true)"
done
echo "${PWD}/$name"
)
}
fi
if [ -d "$versions_dir" ]; then
versions_dir="$(realpath "$versions_dir")"
fi
if ((${BASH_VERSINFO[0]} > 3)); then
declare -A current_versions
else
current_versions=()
fi
if [ -n "$bare" ]; then
include_system=""
else
hit_prefix="* "
miss_prefix=" "
OLDIFS="$IFS"
IFS=:
if ((${BASH_VERSINFO[0]} > 3)); then
for i in $(pyenv-version-name || true); do
current_versions["$i"]="1"
done
else
current_versions=($(pyenv-version-name || true))
fi
IFS="$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() {
local version="${1:?}"
if [[ -n $bare ]]; then
echo "$version"
return
fi
local path="${2:?}"
if [[ -L "$path" ]]; then
# Only resolve the link itself for printing, do not resolve further.
# Doing otherwise would misinform the user of what the link contains.
version_repr="$version --> $(readlink "$path")"
else
version_repr="$version"
fi
if [[ ${BASH_VERSINFO[0]} -ge 4 && ${current_versions["$1"]} ]]; then
echo "${hit_prefix}${version_repr} (set by $(pyenv-version-origin))"
elif (( ${BASH_VERSINFO[0]} <= 3 )) && exists "$1" "${current_versions[@]}"; then
echo "${hit_prefix}${version_repr} (set by $(pyenv-version-origin))"
else
echo "${miss_prefix}${version_repr}"
fi
num_versions=$((num_versions + 1))
}
# Include "system" in the non-bare output, if it exists
if [ -n "$include_system" ] && \
(PYENV_VERSION=system pyenv-which python --skip-advice >/dev/null 2>&1 || \
PYENV_VERSION=system pyenv-which python3 --skip-advice >/dev/null 2>&1 || \
PYENV_VERSION=system pyenv-which python2 --skip-advice >/dev/null 2>&1) ; then
print_version system "/"
fi
shopt -s dotglob nullglob
versions_dir_entries=("$versions_dir"/*)
if sort --version-sort </dev/null >/dev/null 2>&1; then
# system sort supports version sorting
OLDIFS="$IFS"
IFS=$'\n'
versions_dir_entries=($(
printf "%s\n" "${versions_dir_entries[@]}" |
sort --version-sort
))
IFS="$OLDIFS"
fi
for path in "${versions_dir_entries[@]}"; do
if [ -d "$path" ]; then
if [ -n "$skip_aliases" ] && [ -L "$path" ]; then
target="$(realpath "$path")"
[ "${target%/*}" == "$versions_dir" ] && continue
[ "${target%/*/envs/*}" == "$versions_dir" ] && continue
fi
print_version "${path##*/}" "$path"
# virtual environments created by anaconda/miniconda/pyenv-virtualenv
if [[ -z $skip_envs ]]; then
for env_path in "${path}/envs/"*; do
if [ -d "${env_path}" ]; then
print_version "${env_path#${PYENV_ROOT}/versions/}" "${env_path}"
fi
done
fi
fi
done
shopt -u dotglob nullglob
if [ "$num_versions" -eq 0 ] && [ -n "$include_system" ]; then
echo "Warning: no Python detected on the system" >&2
exit 1
fi
|
