created new project.

modified rbenv source for Python and renamed to pyenv.

libexec/pyenv

@@ -0,0 +1,75 @@
+#!/usr/bin/env bash
+set -e
+[ -n "$PYENV_DEBUG" ] && set -x
+
+resolve_link() {
+  $(type -p greadlink readlink | head -1) "$1"
+}
+
+abs_dirname() {
+  local cwd="$(pwd)"
+  local path="$1"
+
+  while [ -n "$path" ]; do
+    cd "${path%/*}"
+    local name="${path##*/}"
+    path="$(resolve_link "$name" || true)"
+  done
+
+  pwd
+  cd "$cwd"
+}
+
+if [ -z "${PYENV_ROOT}" ]; then
+  PYENV_ROOT="${HOME}/.pyenv"
+else
+  PYENV_ROOT="${PYENV_ROOT%/}"
+fi
+export PYENV_ROOT
+
+if [ -z "${PYENV_DIR}" ]; then
+  PYENV_DIR="$(pwd)"
+else
+  cd "$PYENV_DIR" 2>/dev/null || {
+    echo "pyenv: cannot change working directory to \`$PYENV_DIR'"
+    exit 1
+  } >&2
+  PYENV_DIR="$(pwd)"
+  cd "$OLDPWD"
+fi
+export PYENV_DIR
+
+
+shopt -s nullglob
+
+bin_path="$(abs_dirname "$0")"
+for plugin_bin in "${PYENV_ROOT}/plugins/"*/bin; do
+  bin_path="${bin_path}:${plugin_bin}"
+done
+export PATH="${bin_path}:${PATH}"
+
+hook_path="${PYENV_HOOK_PATH}:${PYENV_ROOT}/pyenv.d:/usr/local/etc/pyenv.d:/etc/pyenv.d:/usr/lib/pyenv/hooks"
+for plugin_hook in "${PYENV_ROOT}/plugins/"*/etc/pyenv.d; do
+  hook_path="${hook_path}:${plugin_hook}"
+done
+export PYENV_HOOK_PATH="$hook_path"
+
+shopt -u nullglob
+
+
+command="$1"
+case "$command" in
+"" | "-h" | "--help" )
+  echo -e "pyenv 0.1.0\n$(pyenv-help)" >&2
+  ;;
+* )
+  command_path="$(command -v "pyenv-$command" || true)"
+  if [ -z "$command_path" ]; then
+    echo "pyenv: no such command \`$command'" >&2
+    exit 1
+  fi
+
+  shift 1
+  exec "$command_path" "$@"
+  ;;
+esac

libexec/pyenv-commands

@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+set -e
+[ -n "$PYENV_DEBUG" ] && set -x
+
+# Provide pyenv completions
+if [ "$1" = "--complete" ]; then
+  echo --sh
+  echo --no-sh
+  exit
+fi
+
+if [ "$1" = "--sh" ]; then
+  sh=1
+  shift
+elif [ "$1" = "--no-sh" ]; then
+  nosh=1
+  shift
+fi
+
+shopt -s nullglob
+
+{ for path in ${PATH//:/$'\n'}; do
+    for command in "${path}/pyenv-"*; do
+      command="${command##*pyenv-}"
+      if [ -n "$sh" ]; then
+        if [ ${command:0:3} = "sh-" ]; then
+          echo ${command##sh-}
+        fi
+      elif [ -n "$nosh" ]; then
+        if [ ${command:0:3} != "sh-" ]; then
+          echo ${command##sh-}
+        fi
+      else
+        echo ${command##sh-}
+      fi
+    done
+  done
+} | sort | uniq

libexec/pyenv-completions

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+set -e
+[ -n "$PYENV_DEBUG" ] && set -x
+
+COMMAND="$1"
+if [ -z "$COMMAND" ]; then
+  echo "usage: pyenv completions COMMAND [arg1 arg2...]" >&2
+  exit 1
+fi
+
+COMMAND_PATH="$(command -v "pyenv-$COMMAND" || command -v "pyenv-sh-$COMMAND")"
+if grep -i "^# provide pyenv completions" "$COMMAND_PATH" >/dev/null; then
+  shift
+  exec "$COMMAND_PATH" --complete "$@"
+fi

libexec/pyenv-exec

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+set -e
+[ -n "$PYENV_DEBUG" ] && set -x
+
+# Provide pyenv completions
+if [ "$1" = "--complete" ]; then
+  exec pyenv shims --short
+fi
+
+PYENV_COMMAND="$1"
+if [ -z "$PYENV_COMMAND" ]; then
+  echo "usage: pyenv exec COMMAND [arg1 arg2...]" >&2
+  exit 1
+fi
+
+PYENV_COMMAND_PATH="$(pyenv-which "$PYENV_COMMAND")"
+PYENV_BIN_PATH="${PYENV_COMMAND_PATH%/*}"
+
+for script in $(pyenv-hooks exec); do
+  source "$script"
+done
+
+shift 1
+export PATH="${PYENV_BIN_PATH}:${PATH}"
+exec -a "$PYENV_COMMAND" "$PYENV_COMMAND_PATH" "$@"

libexec/pyenv-global

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+set -e
+[ -n "$PYENV_DEBUG" ] && set -x
+
+# Provide pyenv completions
+if [ "$1" = "--complete" ]; then
+  echo system
+  exec pyenv-versions --bare
+fi
+
+PYENV_VERSION="$1"
+PYENV_VERSION_FILE="${PYENV_ROOT}/version"
+
+if [ -n "$PYENV_VERSION" ]; then
+  pyenv-version-file-write "$PYENV_VERSION_FILE" "$PYENV_VERSION"
+else
+  pyenv-version-file-read "$PYENV_VERSION_FILE" ||
+  pyenv-version-file-read "${PYENV_ROOT}/global" ||
+  pyenv-version-file-read "${PYENV_ROOT}/default" ||
+  echo system
+fi

libexec/pyenv-help

@@ -0,0 +1,99 @@
+#!/usr/bin/env bash
+set -e
+[ -n "$PYENV_DEBUG" ] && set -x
+
+print_set_version() {
+  echo "<version> should be a string matching a Python version known by pyenv."
+
+  local versions="$(pyenv-versions --bare)"
+  if [ -z "$versions" ]; then
+    echo "There are currently no Python versions installed for pyenv."
+  else
+    echo "The currently installed Python versions are:"
+    echo "$versions" | sed 's/^/  /'
+  fi
+
+  echo
+  echo "The special version string 'system' will use your default system Python"
+}
+
+case "$1" in
+"") echo "usage: pyenv <command> [<args>]
+
+Some useful pyenv commands are:
+   commands      List all pyenv commands
+   rehash        Rehash pyenv shims (run this after installing binaries)
+   global        Set or show the global Python version
+   local         Set or show the local directory-specific Python version
+   shell         Set or show the shell-specific Python version
+   version       Show the current Python version
+   versions      List all Python versions known by pyenv
+   which         Show the full path for the given Python command
+   whence        List all Python versions with the given command
+
+See 'pyenv help <command>' for information on a specific command.
+For full documentation, see: https://github.com/sstephenson/pyenv#readme"
+;;
+commands) echo "usage: pyenv commands
+       pyenv commands --sh
+       pyenv commands --no-sh
+
+List all pyenv commands."
+;;
+global) echo "usage: pyenv global <version>
+
+Sets the global Python version. You can override the global version at
+any time by setting a directory-specific version with \`pyenv local'
+or by setting the PYENV_VERSION environment variable.
+
+$(print_set_version)"
+;;
+local) echo "usage: pyenv local <version>
+       pyenv local --unset
+
+Sets the local directory-specific Python version by writing the version
+name to a file named '.pyenv-version'.
+
+When you run a Python command, pyenv will look for an '.pyenv-version'
+file in the current directory and each parent directory. If no such
+file is found in the tree, pyenv will use the global Python version
+specified with \`pyenv global', or the version specified in the
+PYENV_VERSION environment variable.
+
+$(print_set_version)"
+;;
+shell) echo "usage: pyenv shell <version>
+       pyenv shell --unset
+
+Sets a shell-specific Python version by setting the 'PYENV_VERSION'
+environment variable in your shell. This version overrides both
+project-specific versions and the global version.
+
+$(print_set_version)"
+;;
+versions) echo "usage: pyenv versions
+       pyenv versions --bare
+
+Lists all Python versions known by pyenv."
+;;
+which) echo "usage: pyenv which <command>
+
+Displays the full path to the binary that pyenv will execute when you
+run the given command."
+;;
+whence) echo "usage: pyenv whence <command>
+
+Lists all Python versions with the given command installed."
+;;
+*)
+  command_path="$(command -v "pyenv-$1" || true)"
+  if [ -n "$command_path" ]; then
+    echo "Sorry, the \`$1' command isn't documented yet."
+    echo
+    echo "You can view the command's source here:"
+    echo "$command_path"
+    echo
+  else
+    echo "pyenv: no such command \`$1'"
+  fi
+esac

libexec/pyenv-hooks

@@ -0,0 +1,44 @@
+#!/usr/bin/env bash
+set -e
+[ -n "$PYENV_DEBUG" ] && set -x
+
+# Provide pyenv completions
+if [ "$1" = "--complete" ]; then
+  echo exec
+  echo rehash
+  echo which
+  exit
+fi
+
+PYENV_COMMAND="$1"
+if [ -z "$PYENV_COMMAND" ]; then
+  echo "usage: pyenv hooks COMMAND" >&2
+  exit 1
+fi
+
+resolve_link() {
+  $(type -p greadlink readlink | head -1) $1
+}
+
+realpath() {
+  local cwd="$(pwd)"
+  local base="$(basename $1)"
+  local path="$1"
+
+  while [ -n "$path" ]; do
+    cd "${path%/*}"
+    local name="${path##*/}"
+    path="$(resolve_link "$name" || true)"
+  done
+
+  echo "$(pwd)/$base"
+  cd "$cwd"
+}
+
+shopt -s nullglob
+for path in ${PYENV_HOOK_PATH//:/$'\n'}; do
+  for script in $path/"$PYENV_COMMAND"/*.bash; do
+    echo $(realpath $script)
+  done
+done
+shopt -u nullglob

libexec/pyenv-init

@@ -0,0 +1,101 @@
+#!/usr/bin/env bash
+set -e
+[ -n "$PYENV_DEBUG" ] && set -x
+
+print=""
+no_rehash=""
+for args in "$@"
+do
+  if [ "$args" = "-" ]; then
+    print=1
+		shift
+  fi
+
+  if [ "$args" = "--no-rehash" ]; then
+    no_rehash=1
+    shift
+  fi
+done
+
+shell="$1"
+if [ -z "$shell" ]; then
+  shell="$(basename "$SHELL")"
+fi
+
+resolve_link() {
+  $(type -p greadlink readlink | head -1) $1
+}
+
+abs_dirname() {
+  local cwd="$(pwd)"
+  local path="$1"
+
+  while [ -n "$path" ]; do
+    cd "${path%/*}"
+    local name="${path##*/}"
+    path="$(resolve_link "$name" || true)"
+  done
+
+  pwd
+  cd "$cwd"
+}
+
+root="$(abs_dirname "$0")/.."
+
+if [ -z "$print" ]; then
+  case "$shell" in
+  bash )
+    profile='~/.bash_profile'
+    ;;
+  zsh )
+    profile='~/.zshrc'
+    ;;
+  ksh )
+    profile='~/.profile'
+    ;;
+  * )
+    profile='your profile'
+    ;;
+  esac
+
+  { echo "# Load pyenv automatically by adding"
+    echo "# the following to ${profile}:"
+    echo
+    echo 'eval "$(pyenv init -)"'
+    echo
+  } >&2
+
+  exit 1
+fi
+
+mkdir -p "${PYENV_ROOT}/"{shims,versions}
+
+echo 'export PATH="'${PYENV_ROOT}'/shims:${PATH}"'
+
+case "$shell" in
+bash | zsh )
+  echo "source \"$root/completions/pyenv.${shell}\""
+  ;;
+esac
+
+if [ -z "$no_rehash" ]; then
+  echo 'pyenv rehash 2>/dev/null'
+fi
+
+commands=(`pyenv commands --sh`)
+IFS="|"
+cat <<EOS
+pyenv() {
+  local command="\$1"
+  if [ "\$#" -gt 0 ]; then
+    shift
+  fi
+
+  case "\$command" in
+  ${commands[*]})
+    eval \`pyenv "sh-\$command" "\$@"\`;;
+  *)
+    command pyenv "\$command" "\$@";;
+  esac
+}
+EOS

libexec/pyenv-local

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+set -e
+[ -n "$PYENV_DEBUG" ] && set -x
+
+# Provide pyenv completions
+if [ "$1" = "--complete" ]; then
+  echo --unset
+  echo system
+  exec pyenv-versions --bare
+fi
+
+PYENV_VERSION="$1"
+PYENV_VERSION_FILE=".pyenv-version"
+
+if [ "$PYENV_VERSION" = "--unset" ]; then
+  rm -f "$PYENV_VERSION_FILE"
+elif [ -n "$PYENV_VERSION" ]; then
+  pyenv-version-file-write "$PYENV_VERSION_FILE" "$PYENV_VERSION"
+else
+  pyenv-version-file-read "$PYENV_VERSION_FILE" ||
+  { echo "pyenv: no local version configured for this directory"
+    exit 1
+  } >&2
+fi

libexec/pyenv-prefix

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+set -e
+[ -n "$PYENV_DEBUG" ] && set -x
+
+# Provide pyenv completions
+if [ "$1" = "--complete" ]; then
+  echo system
+  exec pyenv-versions --bare
+fi
+
+if [ -n "$1" ]; then
+  export PYENV_VERSION="$1"
+elif [ -z "$PYENV_VERSION" ]; then
+  PYENV_VERSION="$(pyenv-version-name)"
+fi
+
+if [ "$PYENV_VERSION" = "system" ]; then
+  PYTHON_PATH="$(pyenv-which python)"
+  echo "${PYTHON_PATH%/*}"
+  exit
+fi
+
+PYENV_PREFIX_PATH="${PYENV_ROOT}/versions/${PYENV_VERSION}"
+if [ ! -d "$PYENV_PREFIX_PATH" ]; then
+  echo "pyenv: version \`${PYENV_VERSION}' not installed" >&2
+  exit 1
+fi
+
+echo "$PYENV_PREFIX_PATH"

libexec/pyenv-rehash

@@ -0,0 +1,150 @@
+#!/usr/bin/env bash
+set -e
+[ -n "$PYENV_DEBUG" ] && set -x
+
+SHIM_PATH="${PYENV_ROOT}/shims"
+PROTOTYPE_SHIM_PATH="${SHIM_PATH}/.pyenv-shim"
+
+# Create the shims directory if it doesn't already exist.
+mkdir -p "$SHIM_PATH"
+
+# Ensure only one instance of pyenv-rehash is running at a time by
+# setting the shell's `noclobber` option and attempting to write to
+# the prototype shim file. If the file already exists, print a warning
+# to stderr and exit with a non-zero status.
+set -o noclobber
+{ echo > "$PROTOTYPE_SHIM_PATH"
+} 2>/dev/null ||
+{ echo "pyenv: cannot rehash: $PROTOTYPE_SHIM_PATH exists"
+  exit 1
+} >&2
+set +o noclobber
+
+# If we were able to obtain a lock, register a trap to clean up the
+# prototype shim when the process exits.
+trap remove_prototype_shim EXIT
+
+remove_prototype_shim() {
+  rm -f "$PROTOTYPE_SHIM_PATH"
+}
+
+# The prototype shim file is a script that re-execs itself, passing
+# its filename and any arguments to `pyenv exec`. This file is
+# hard-linked for every binary and then removed. The linking technique
+# is fast, uses less disk space than unique files, and also serves as
+# a locking mechanism.
+create_prototype_shim() {
+  cat > "$PROTOTYPE_SHIM_PATH" <<SH
+#!/usr/bin/env bash
+set -e
+export PYENV_ROOT="$PYENV_ROOT"
+exec pyenv exec "\${0##*/}" "\$@"
+SH
+  chmod +x "$PROTOTYPE_SHIM_PATH"
+}
+
+# The basename of each argument passed to `make_shims` will be
+# registered for installation as a shim. In this way, plugins may call
+# `make_shims` with a glob to register many shims at once.
+make_shims() {
+  local shims="$@"
+
+  for file in $shims; do
+    local shim="${file##*/}"
+    register_shim "$shim"
+  done
+}
+
+# Create an empty array for the list of registered shims.
+registered_shims=()
+
+# We will keep track of shims registered for installation with the
+# global `reigstered_shims` array and with a global variable for each
+# shim. The array will let us iterate over all registered shims. The
+# global variables will let us quickly check whether a shim with the
+# given name has been registered or not.
+register_shim() {
+  local shim="$@"
+  local var="$(shim_variable_name "$shim")"
+
+  if [ -z "${!var}" ]; then
+    registered_shims[${#registered_shims[*]}]="$shim"
+    eval "${var}=1"
+  fi
+}
+
+# To compute the global variable name for a given shim we must first
+# escape any non-alphanumeric characters. If the shim name is
+# alphanumeric (including a hyphen or underscore) we can take a
+# shorter path. Otherwise, we must iterate over each character and
+# escape the non-alphanumeric ones using `printf`.
+shim_variable_name() {
+  local shim="$1"
+  local result="_shim_"
+
+  if [[ ! "$shim" =~ [^[:alnum:]_-] ]]; then
+    shim="${shim//_/_5f}"
+    shim="${shim//-/_2d}"
+    result="$result$shim"
+  else
+    local length="${#shim}"
+    local char i
+
+    for ((i=0; i<length; i++)); do
+      char="${shim:$i:1}"
+      if [[ "$char" =~ [[:alnum:]] ]]; then
+        result="$result$char"
+      else
+        result="$result$(printf "_%02x" \'"$char")"
+      fi
+    done
+  fi
+
+  echo "$result"
+}
+
+# To install all the registered shims, we iterate over the
+# `registered_shims` array and create a link if one does not already
+# exist.
+install_registered_shims() {
+  for shim in "${registered_shims[@]}"; do
+    [ -e "$shim" ] || ln -f "$PROTOTYPE_SHIM_PATH" "$shim"
+  done
+}
+
+# Once the registered shims have been installed, we make a second pass
+# over the contents of the shims directory. Any file that is present
+# in the directory but has not been registered as a shim should be
+# removed.
+remove_stale_shims() {
+  local var
+  for shim in *; do
+    var="$(shim_variable_name "$shim")"
+    if [ -z "${!var}" ]; then
+      rm -f "$shim" 
+    fi
+  done
+}
+
+
+# Change to the shims directory.
+cd "$SHIM_PATH"
+
+# Create the prototype shim, then register shims for all known binaries.
+create_prototype_shim
+shopt -s nullglob
+make_shims ../versions/*/bin/*
+
+# Restore the previous working directory.
+cd "$OLDPWD"
+
+# Allow plugins to register shims.
+for script in $(pyenv-hooks rehash); do
+  source "$script"
+done
+
+# Change back to the shims directory to install the registered shims
+# and remove stale shims.
+cd "$SHIM_PATH"
+install_registered_shims
+remove_stale_shims

libexec/pyenv-root

@@ -0,0 +1,2 @@
+#!/usr/bin/env bash
+echo $PYENV_ROOT

libexec/pyenv-sh-shell

@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+set -e
+[ -n "$PYENV_DEBUG" ] && set -x
+
+# Provide pyenv completions
+if [ "$1" = "--complete" ]; then
+  echo --unset
+  echo system
+  exec pyenv-versions --bare
+fi
+
+version="$1"
+
+if [ -z "$version" ]; then
+  if [ -z "$PYENV_VERSION" ]; then
+    echo "pyenv: no shell-specific version configured" >&2
+    exit 1
+  else
+    echo "echo \"\$PYENV_VERSION\""
+    exit
+  fi
+fi
+
+if [ "$version" = "--unset" ]; then
+  echo "unset PYENV_VERSION"
+  exit 1
+fi
+
+# Make sure the specified version is installed.
+pyenv-prefix "$version" >/dev/null
+
+echo "export PYENV_VERSION=\"${version}\""

libexec/pyenv-shims

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+set -e
+[ -n "$PYENV_DEBUG" ] && set -x
+
+# Provide pyenv completions
+if [ "$1" = "--complete" ]; then
+  echo --short
+  exit
+fi
+
+for command in "${PYENV_ROOT}/shims/"*; do
+  if [ "$1" = "--short" ]; then
+    echo "${command##*/}"
+  else
+    echo "$command"
+  fi
+done | sort

libexec/pyenv-version

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+set -e
+[ -n "$PYENV_DEBUG" ] && set -x
+
+echo "$(pyenv-version-name) (set by $(pyenv-version-origin))"

libexec/pyenv-version-file

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+set -e
+[ -n "$PYENV_DEBUG" ] && set -x
+
+root="$PYENV_DIR"
+while [ -n "$root" ]; do
+  if [ -e "${root}/.pyenv-version" ]; then
+    echo "${root}/.pyenv-version"
+    exit
+  fi
+  root="${root%/*}"
+done
+
+global_version_file="${PYENV_ROOT}/version"
+
+if [ -e "$global_version_file" ]; then
+  echo "$global_version_file"
+elif [ -e "${PYENV_ROOT}/global" ]; then
+  echo "${PYENV_ROOT}/global"
+elif [ -e "${PYENV_ROOT}/default" ]; then
+  echo "${PYENV_ROOT}/default"
+else
+  echo "$global_version_file"
+fi

libexec/pyenv-version-file-read

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+set -e
+[ -n "$PYENV_DEBUG" ] && set -x
+
+VERSION_FILE="$1"
+
+if [ -e "$VERSION_FILE" ]; then
+  # Read and print the first non-whitespace word from the specified
+  # version file.
+  version=""
+  while read -a words; do
+    word="${words[0]}"
+    if [ -z "$version" ] && [ -n "$word" ]; then
+      version="$word"
+    fi
+  done < <( cat "$VERSION_FILE" && echo )
+
+  if [ -n "$version" ]; then
+    echo "$version"
+    exit
+  fi
+fi
+
+exit 1

libexec/pyenv-version-file-write

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+set -e
+[ -n "$PYENV_DEBUG" ] && set -x
+
+PYENV_VERSION_FILE="$1"
+PYENV_VERSION="$2"
+
+if [ -z "$PYENV_VERSION" ] || [ -z "$PYENV_VERSION_FILE" ]; then
+  echo "usage: pyenv write-version-file FILENAME VERSION" >&2
+  exit 1
+fi
+
+# Make sure the specified version is installed.
+pyenv-prefix "$PYENV_VERSION" >/dev/null
+
+# Write the version out to disk.
+echo "$PYENV_VERSION" > "$PYENV_VERSION_FILE"

libexec/pyenv-version-name

@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+set -e
+[ -n "$PYENV_DEBUG" ] && set -x
+
+if [ -z "$PYENV_VERSION" ]; then
+  PYENV_VERSION_FILE="$(pyenv-version-file)"
+  PYENV_VERSION="$(pyenv-version-file-read "$PYENV_VERSION_FILE" || true)"
+fi
+
+if [ -z "$PYENV_VERSION" ] || [ "$PYENV_VERSION" = "system" ]; then
+  echo "system"
+  exit
+fi
+
+PYENV_VERSION_PATH="${PYENV_ROOT}/versions/${PYENV_VERSION}"
+
+if [ -d "$PYENV_VERSION_PATH" ]; then
+  echo "$PYENV_VERSION"
+else
+  echo "pyenv: version \`$PYENV_VERSION' is not installed" >&2
+  exit 1
+fi

libexec/pyenv-version-origin

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+set -e
+[ -n "$PYENV_DEBUG" ] && set -x
+
+if [ -n "$PYENV_VERSION" ]; then
+  echo "PYENV_VERSION environment variable"
+else
+  pyenv-version-file
+fi

libexec/pyenv-versions

@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+set -e
+[ -n "$PYENV_DEBUG" ] && set -x
+
+PYENV_VERSION_NAME="$(pyenv-version-name)"
+
+if [ "$1" = "--bare" ]; then
+  hit_prefix=""
+  miss_prefix=""
+  print_version="$PYENV_VERSION_NAME"
+else
+  hit_prefix="* "
+  miss_prefix="  "
+  print_version="$(pyenv-version)"
+fi
+
+for path in "${PYENV_ROOT}/versions/"*; do
+  if [ -d "$path" ]; then
+    version="${path##*/}"
+
+    if [ "$version" == "$PYENV_VERSION_NAME" ]; then
+      echo "${hit_prefix}${print_version}"
+    else
+      echo "${miss_prefix}${version}"
+    fi
+  fi
+done

libexec/pyenv-whence

@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+set -e
+[ -n "$PYENV_DEBUG" ] && set -x
+
+# Provide pyenv completions
+if [ "$1" = "--complete" ]; then
+  echo --path
+  exec pyenv shims --short
+fi
+
+if [ "$1" = "--path" ]; then
+  print_paths="1"
+  shift
+else
+  print_paths=""
+fi
+
+whence() {
+  local command="$1"
+  pyenv-versions --bare | while read version; do
+    path="$(pyenv-prefix "$version")/bin/${command}"
+    if [ -x "$path" ]; then
+      [ "$print_paths" ] && echo "$path" || echo "$version"
+    fi
+  done
+}
+
+PYENV_COMMAND="$1"
+if [ -z "$PYENV_COMMAND" ]; then
+  echo "usage: pyenv whence [--path] COMMAND" >&2
+  exit 1
+fi
+
+result="$(whence "$PYENV_COMMAND")"
+[ -n "$result" ] && echo "$result"

libexec/pyenv-which

@@ -0,0 +1,77 @@
+#!/usr/bin/env bash
+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 "${result%:}"
+}
+
+PYENV_VERSION="$(pyenv-version-name)"
+PYENV_COMMAND="$1"
+
+if [ -z "$PYENV_COMMAND" ]; then
+  echo "usage: pyenv which COMMAND" >&2
+  exit 1
+fi
+
+if [ "$PYENV_VERSION" = "system" ]; then
+  PATH="$(remove_from_path "${PYENV_ROOT}/shims")"
+  PYENV_COMMAND_PATH="$(command -v "$PYENV_COMMAND")"
+else
+  PYENV_COMMAND_PATH="${PYENV_ROOT}/versions/${PYENV_VERSION}/bin/${PYENV_COMMAND}"
+fi
+
+for script in $(pyenv-hooks which); do
+  source "$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
+      echo "The \`$1' command exists in these Python versions:"
+      echo "$versions" | sed 's/^/  /g'
+      echo
+    } >&2
+  fi
+
+  exit 127
+fi