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305 rivejä
7.1 KiB
305 rivejä
7.1 KiB
#!/usr/bin/env bash
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#
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# Summary: Activate virtual environment
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#
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# Usage: pyenv activate <virtualenv>
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# pyenv activate --unset
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#
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# Activate a Python virtualenv environment in current shell.
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# This acts almost as same as `pyenv shell`, but this invokes the `activate`
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# script in your shell.
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#
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# <virtualenv> should be a string matching a Python version known to pyenv.
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set -e
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[ -n "$PYENV_DEBUG" ] && set -x
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if [ -z "${PYENV_ROOT}" ]; then
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PYENV_ROOT="$(pyenv-root)"
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fi
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resolve_link() {
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$(type -p greadlink readlink | head -1) "$1"
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}
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unset FORCE
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unset QUIET
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# Define `before_activate` and `after_activate` functions that allow
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# plugin hooks to register a string of code for execution before or
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# after activating a virtualenv.
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declare -a before_hooks after_hooks
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before_activate() {
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local hook="$1"
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before_hooks["${#before_hooks[@]}"]="$hook"
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}
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after_activate() {
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local hook="$1"
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after_hooks["${#after_hooks[@]}"]="$hook"
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}
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# Load plugin hooks.
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OLDIFS="$IFS"
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IFS=$'\n' scripts=(`pyenv-hooks activate`)
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IFS="$OLDIFS"
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for script in "${scripts[@]}"; do source "$script"; done
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while [ $# -gt 0 ]; do
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case "$1" in
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"--complete" )
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# Provide pyenv completions
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echo --unset
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exec pyenv-virtualenvs --bare
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;;
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"-f" | "--force" )
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FORCE=1
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;;
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"-q" | "--quiet" )
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QUIET=1
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;;
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"--unset" )
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exec pyenv-sh-deactivate
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;;
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"-v" | "--verbose" )
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unset QUIET
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PYENV_VIRTUALENV_VERBOSE_ACTIVATE=1
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;;
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* )
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break
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;;
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esac
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shift 1
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done
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get_current_versions() {
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local IFS=:
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current_versions=($(pyenv-version-name 2>/dev/null))
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}
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no_shell=
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versions=("$@")
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current_versions=()
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if [ -z "${versions}" ]; then
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no_shell=1
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get_current_versions
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versions=("${current_versions[@]}")
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fi
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if [ -z "${PYENV_VIRTUALENV_INIT}" ]; then
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# Backward compatibility issue
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# https://github.com/yyuu/pyenv-virtualenv/issues/26
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no_shell=
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fi
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venv="${versions}"
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if [ -n "${VIRTUAL_ENV}" ]; then
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# exit as success if a non-pyenv virtualenv is active
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if [[ -z $PYENV_VIRTUAL_ENV || $PYENV_VIRTUAL_ENV != "$VIRTUAL_ENV" ]]; then
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if [ -z "${FORCE}" ]; then
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if [ -z "${QUIET}" ]; then
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echo "pyenv-virtualenv: virtualenv \`${VIRTUAL_ENV}' is already activated" 1>&2
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fi
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echo "true"
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exit 0
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fi
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fi
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fi
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if ! pyenv-virtualenv-prefix "${venv}" 1>/dev/null 2>&1; then
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# fallback to virtualenv of current version
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[ -n "${current_versions}" ] || get_current_versions
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new_venv="${current_versions%/envs/*}/envs/${venv}"
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if pyenv-virtualenv-prefix "${new_venv}" 1>/dev/null 2>&1; then
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venv="${new_venv}"
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versions[0]="${new_venv}"
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else
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if [ -z "${QUIET}" ]; then
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echo "pyenv-virtualenv: version \`${venv}' is not a virtualenv" 1>&2
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fi
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echo "false"
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exit 1
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fi
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fi
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# exit as error if there are multiple virtualenvs
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# https://github.com/yyuu/pyenv-virtualenv/issues/105
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for version in "${versions[@]}"; do
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if [[ "${version}" != "${venv}" ]]; then
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if pyenv-virtualenv-prefix "${version}" 1>/dev/null 2>&1; then
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if [ -z "${QUIET}" ]; then
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echo "pyenv-virtualenv: cannot activate multiple versions at once: ${versions[@]}" 1>&2
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fi
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echo "false"
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exit 1
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fi
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fi
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done
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shell="${PYENV_SHELL:-${SHELL##*/}}"
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prefix="$(pyenv-prefix "${venv}")"
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if [ -L "${prefix}" ]; then
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prefix="$(resolve_link "${prefix}" 2>/dev/null)"
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fi
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# exit as success if the virtualenv is already activated
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if [[ "${VIRTUAL_ENV}" == "${prefix}" ]]; then
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if [ -z "${FORCE}" ]; then
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if [ -z "${QUIET}" ]; then
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echo "pyenv-virtualenv: version \`${venv}' is already activated" 1>&2
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fi
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echo "true"
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exit 0
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fi
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fi
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pyenv-sh-deactivate --force --quiet || true
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# Execute `before_activate` hooks.
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for hook in "${before_hooks[@]}"; do eval "$hook"; done
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if [ -n "$PYENV_VIRTUALENV_VERBOSE_ACTIVATE" ]; then
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echo "pyenv-virtualenv: activate ${venv}" 1>&2
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fi
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if [ -z "$no_shell" ]; then
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# shell version set in pyenv-sh-activate should be unset
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# https://github.com/yyuu/pyenv-virtualenv/issues/61
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OLDIFS="$IFS"
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IFS=:
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case "$shell" in
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fish )
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cat <<EOS
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set -gx PYENV_VERSION "${versions[*]}";
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set -gx PYENV_ACTIVATE_SHELL 1;
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EOS
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;;
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* )
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cat <<EOS
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export PYENV_VERSION="${versions[*]}";
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export PYENV_ACTIVATE_SHELL=1;
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EOS
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;;
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esac
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IFS="$OLDIFS"
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fi
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# virtualenv/venv
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case "${shell}" in
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fish )
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cat <<EOS
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set -gx PYENV_VIRTUAL_ENV "${prefix}";
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set -gx VIRTUAL_ENV "${prefix}";
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EOS
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;;
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* )
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cat <<EOS
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export PYENV_VIRTUAL_ENV="${prefix}";
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export VIRTUAL_ENV="${prefix}";
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EOS
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;;
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esac
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# anaconda/miniconda
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if [ -d "${prefix}/conda-meta" ] ||
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[ -x "${prefix}/bin/conda" ]; then
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if [[ "${prefix}" != "${prefix%/envs/*}" ]]; then
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CONDA_DEFAULT_ENV="${venv##*/envs/}"
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else
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CONDA_DEFAULT_ENV="root"
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fi
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case "${shell}" in
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fish )
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echo "set -gx CONDA_DEFAULT_ENV \"${CONDA_DEFAULT_ENV}\";"
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;;
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* )
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echo "export CONDA_DEFAULT_ENV=\"${CONDA_DEFAULT_ENV}\";"
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;;
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esac
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fi
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if [ -n "${PYTHONHOME}" ]; then
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case "${shell}" in
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fish )
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cat <<EOS
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set -gx _OLD_VIRTUAL_PYTHONHOME "${PYTHONHOME}";
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set -e PYTHONHOME;
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EOS
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;;
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* )
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cat <<EOS
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export _OLD_VIRTUAL_PYTHONHOME="${PYTHONHOME}";
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unset PYTHONHOME;
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EOS
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;;
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esac
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fi
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PYENV_VIRTUALENV_DISABLE_PROMPT="${PYENV_VIRTUALENV_DISABLE_PROMPT:-${PYENV_VIRTUAL_ENV_DISABLE_PROMPT}}"
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PYENV_VIRTUALENV_DISABLE_PROMPT="${PYENV_VIRTUALENV_DISABLE_PROMPT:-${VIRTUAL_ENV_DISABLE_PROMPT}}"
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if [ -z "${PYENV_VIRTUALENV_DISABLE_PROMPT}" ]; then
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case "${shell}" in
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fish )
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if [ -z "${QUIET}" ]; then
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cat <<EOS
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functions -e _pyenv_old_prompt # remove old prompt function if exists.
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# since everything is in memory, it's safe to
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# remove it.
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functions -c fish_prompt _pyenv_old_prompt # backup old prompt function
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# from python-venv
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function fish_prompt
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set -l prompt (_pyenv_old_prompt) # call old prompt function first since it might
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# read exit status
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echo -n "(${venv}) " # add virtualenv to prompt
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string join -- \n \$prompt # handle multiline prompts
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end
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EOS
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fi
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;;
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* )
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if [ -z "${PYENV_VIRTUALENV_PROMPT}" ]; then
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PYENV_VIRTUALENV_PROMPT="(${venv})"
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else
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PYENV_VIRTUALENV_PROMPT="${PYENV_VIRTUALENV_PROMPT/\{venv\}/${venv}}"
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fi
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cat <<EOS
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export _OLD_VIRTUAL_PS1="\${PS1:-}";
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export PS1="${PYENV_VIRTUALENV_PROMPT} \${PS1:-}";
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EOS
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;;
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esac
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fi
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# conda package anaconda/miniconda scripts (#173)
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if [ -d "${prefix}/conda-meta" ] ||
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[ -x "${prefix}/bin/conda" ]; then
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shopt -s nullglob
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case "${shell}" in
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fish )
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# conda 4.4 and above
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for script in "${prefix}/etc/fish/conf.d"/*.fish; do
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echo "source \"${script}\";"
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done
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;;
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* )
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CONDA_PREFIX="$prefix"
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echo "export CONDA_PREFIX=\"${CONDA_PREFIX}\";"
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for script in "${prefix}/etc/conda/activate.d"/*.sh; do
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echo ". \"${script}\";"
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done
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# conda 4.4 and above
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for script in "${prefix}/etc/profile.d"/*.sh; do
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echo ". \"${script}\";"
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done
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;;
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esac
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shopt -u nullglob
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fi
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# Execute `after_activate` hooks.
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for hook in "${after_hooks[@]}"; do eval "$hook"; done
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