pyenv/libexec/pyenv-which

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#!/usr/bin/env bash
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#
# Summary: Display the full path to an executable
#
# Usage: pyenv which <command>
#
# Displays the full path to the executable that pyenv will invoke when
# you run the given command.
set -e
[ -n "$PYENV_DEBUG" ] && set -x
# Provide pyenv completions
if [ "$1" = "--complete" ]; then
exec pyenv shims --short
fi
expand_path() {
if [ ! -d "$1" ]; then
return 1
fi
local cwd="$(pwd)"
cd "$1"
pwd
cd "$cwd"
}
remove_from_path() {
local path_to_remove="$(expand_path "$1")"
local result=""
if [ -z "$path_to_remove" ]; then
echo "${PATH}"
return
fi
local paths
IFS=: paths=($PATH)
for path in "${paths[@]}"; do
path="$(expand_path "$path" || true)"
if [ -n "$path" ] && [ "$path" != "$path_to_remove" ]; then
result="${result}${path}:"
fi
done
echo "${result%:}"
}
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OLDIFS="$IFS"
IFS=: versions=($(pyenv-version-name))
IFS=: PYENV_VERSION="${versions[*]}"
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IFS="$OLDIFS"
PYENV_COMMAND="$1"
if [ -z "$PYENV_COMMAND" ]; then
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pyenv-help --usage which >&2
exit 1
fi
for version in "${versions[@]}"; do
if [ "$version" = "system" ]; then
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PATH="$(remove_from_path "${PYENV_ROOT}/shims")"
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PYENV_COMMAND_PATH="$(command -v "$PYENV_COMMAND" || true)"
else
PYENV_COMMAND_PATH="${PYENV_ROOT}/versions/${version}/bin/${PYENV_COMMAND}"
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fi
if [ -x "$PYENV_COMMAND_PATH" ]; then
break
fi
done
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OLDIFS="$IFS"
IFS=$'\n' scripts=(`pyenv-hooks which`)
IFS="$OLDIFS"
for script in "${scripts[@]}"; do
source "$script"
done
if [ -x "$PYENV_COMMAND_PATH" ]; then
echo "$PYENV_COMMAND_PATH"
else
echo "pyenv: $PYENV_COMMAND: command not found" >&2
versions="$(pyenv-whence "$PYENV_COMMAND" || true)"
if [ -n "$versions" ]; then
{ echo
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echo "The \`$1' command exists in these Python versions:"
echo "$versions" | sed 's/^/ /g'
echo
} >&2
fi
exit 127
fi