pyenv/plugins/python-build/bin/pyenv-install
2013-07-25 17:19:55 +09:00

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#!/usr/bin/env bash
#
# Summary: Install a Python version using the python-build plugin
#
# Usage: pyenv install [-f|--force] [-g|--debug] [-k|--keep] [-v|--verbose] <version>
# pyenv install [-f|--force] [-g|--debug] [-k|--keep] [-v|--verbose] <definition-file>
# pyenv install -l|--list
#
# -l/--list List all available versions
# -f/--force Install even if the version appears to be installed already
# -k/--keep Keep source tree in $PYENV_BUILD_ROOT after installation
# (defaults to $PYENV_ROOT/sources)
# -g/--debug Build a debug version
# -v/--verbose Verbose mode: print compilation status to stdout
#
# For detailed information on installing Python versions with
# python-build, including a list of environment variables for adjusting
# compilation, see: https://github.com/yyuu/pyenv#readme
#
set -e
[ -n "$PYENV_DEBUG" ] && set -x
# Provide pyenv completions
if [ "$1" = "--complete" ]; then
exec python-build --definitions
fi
if [ -z "$PYENV_ROOT" ]; then
PYENV_ROOT="${HOME}/.pyenv"
fi
# Load shared library functions
eval "$(python-build --lib)"
usage() {
# We can remove the sed fallback once pyenv 0.4.0 is widely available.
pyenv-help install 2>/dev/null || sed -ne '/^#/!q;s/.//;s/.//;1,4d;p' < "$0"
[ -z "$1" ] || exit "$1"
}
definitions() {
local query="$1"
python-build --definitions | grep -F "$query" || true
}
indent() {
sed 's/^/ /'
}
unset FORCE
unset KEEP
unset VERBOSE
unset DEBUG
parse_options "$@"
for option in "${OPTIONS[@]}"; do
case "$option" in
"h" | "help" )
usage 0
;;
"l" | "list" )
echo "Available versions:"
definitions | indent
exit
;;
"f" | "force" )
FORCE=true
;;
"k" | "keep" )
[ -n "${PYENV_BUILD_ROOT}" ] || PYENV_BUILD_ROOT="${PYENV_ROOT}/sources"
;;
"v" | "verbose" )
VERBOSE="-v"
;;
"g" | "debug" )
DEBUG="-g"
;;
"version" )
exec python-build --version
;;
* )
usage 1
;;
esac
done
unset VERSION_NAME
# The first argument contains the definition to install. If the
# argument is missing, try to install whatever local app-specific
# version is specified by pyenv. Show usage instructions if a local
# version is not specified.
DEFINITION="${ARGUMENTS[0]}"
[ -n "$DEFINITION" ] || DEFINITION="$(pyenv local 2>/dev/null || true)"
[ -n "$DEFINITION" ] || usage 1
# Define `before_install` and `after_install` functions that allow
# plugin hooks to register a string of code for execution before or
# after the installation process.
declare -a before_hooks after_hooks
before_install() {
local hook="$1"
before_hooks["${#before_hooks[@]}"]="$hook"
}
after_install() {
local hook="$1"
after_hooks["${#after_hooks[@]}"]="$hook"
}
# Load plugin hooks.
for script in $(pyenv-hooks install); do
source "$script"
done
# Set VERSION_NAME from $DEFINITION, if it is not already set. Then
# compute the installation prefix.
[ -n "$VERSION_NAME" ] || VERSION_NAME="${DEFINITION##*/}"
[ -n "$DEBUG" ] && VERSION_NAME="${VERSION_NAME}-debug"
PREFIX="${PYENV_ROOT}/versions/${VERSION_NAME}"
[ -d "${PREFIX}" ] && PREFIX_EXISTS=1
# If the installation prefix exists, prompt for confirmation unless
# the --force option was specified.
if [ -z "$FORCE" ] && [ -d "${PREFIX}/bin" ]; then
echo "pyenv: $PREFIX already exists" >&2
read -p "continue with installation? (y/N) "
case "$REPLY" in
y* | Y* ) ;;
* ) exit 1 ;;
esac
fi
# If PYENV_BUILD_ROOT is set, always pass keep options to python-build.
if [ -n "${PYENV_BUILD_ROOT}" ]; then
export PYTHON_BUILD_BUILD_PATH="${PYENV_BUILD_ROOT}/${VERSION_NAME}"
KEEP="-k"
fi
# Set PYTHON_BUILD_CACHE_PATH to $PYENV_ROOT/cache, if the directory
# exists and the variable is not already set.
if [ -z "${PYTHON_BUILD_CACHE_PATH}" ] && [ -d "${PYENV_ROOT}/cache" ]; then
export PYTHON_BUILD_CACHE_PATH="${PYENV_ROOT}/cache"
fi
# Default PYENV_VERSION to the globally-specified Python version. (The
# CPython installer requires an existing Python installation to run. An
# unsatisfied local .python-version file can cause the installer to
# fail.)
#export PYENV_VERSION="$(pyenv global 2>/dev/null || true)"
# Execute `before_install` hooks.
for hook in "${before_hooks[@]}"; do eval "$hook"; done
# Plan cleanup on unsuccessful installation.
cleanup() {
[ -z "${PREFIX_EXISTS}" ] && rm -rf "$PREFIX"
}
trap cleanup SIGINT
# Invoke `python-build` and record the exit status in $STATUS.
STATUS=0
python-build $KEEP $VERBOSE $DEBUG "$DEFINITION" "$PREFIX" || STATUS="$?"
# Display a more helpful message if the definition wasn't found.
if [ "$STATUS" == "2" ]; then
{ candidates="$(definitions "$DEFINITION")"
if [ -n "$candidates" ]; then
echo
echo "The following versions contain \`$DEFINITION' in the name:"
echo "$candidates" | indent
fi
echo
echo "You can list all available versions with \`pyenv install --list'."
echo
echo "If the version you're looking for is not present, first try upgrading"
echo "pyenv. If it's still missing, open a request on the pyenv"
echo "issue tracker: https://github.com/yyuu/pyenv/issues"
} >&2
fi
# Execute `after_install` hooks.
for hook in "${after_hooks[@]}"; do eval "$hook"; done
# Run `pyenv-rehash` after a successful installation.
if [ "$STATUS" == "0" ]; then
pyenv rehash
else
cleanup
fi
exit "$STATUS"