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prezto/modules/python/init.zsh

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#
# Enables local Python package installation.
#
# Authors:
# Sorin Ionescu <sorin.ionescu@gmail.com>
# Sebastian Wiesner <lunaryorn@googlemail.com>
#
# Load manually installed pyenv into the shell session.
if [[ -s "$HOME/.pyenv/bin/pyenv" ]]; then
path=("$HOME/.pyenv/bin" $path)
eval "$(pyenv init -)"
# Load package manager installed pyenv into the shell session.
elif (( $+commands[pyenv] )); then
eval "$(pyenv init -)"
# Prepend PEP 370 per user site packages directory, which defaults to
# ~/Library/Python on Mac OS X and ~/.local elsewhere, to PATH. The
# path can be overridden using PYTHONUSERBASE.
else
if [[ -n "$PYTHONUSERBASE" ]]; then
path=($PYTHONUSERBASE/bin $path)
elif [[ "$OSTYPE" == darwin* ]]; then
path=($HOME/Library/Python/*/bin(N) $path)
else
# This is subject to change.
path=($HOME/.local/bin $path)
fi
fi
# Return if requirements are not found.
if (( ! $+commands[python] && ! $+commands[pyenv] )); then
return 1
fi
_python-workon-cwd() {
# Check if this is a Git repo
local GIT_REPO_ROOT=""
local GIT_TOPLEVEL="$(git rev-parse --show-toplevel 2> /dev/null)"
if [[ $? == 0 ]]; then
GIT_REPO_ROOT="$GIT_TOPLEVEL"
fi
# Get absolute path, resolving symlinks
local PROJECT_ROOT="${PWD:A}"
while [[ "$PROJECT_ROOT" != "/" && ! -e "$PROJECT_ROOT/.venv" \
&& ! -d "$PROJECT_ROOT/.git" && "$PROJECT_ROOT" != "$GIT_REPO_ROOT" ]]; do
PROJECT_ROOT="${PROJECT_ROOT:h}"
done
if [[ "$PROJECT_ROOT" == "/" ]]; then
PROJECT_ROOT="."
fi
# Check for virtualenv name override
local ENV_NAME=""
if [[ -f "$PROJECT_ROOT/.venv" ]]; then
ENV_NAME="$(cat "$PROJECT_ROOT/.venv")"
elif [[ -f "$PROJECT_ROOT/.venv/bin/activate" ]];then
ENV_NAME="$PROJECT_ROOT/.venv"
elif [[ "$PROJECT_ROOT" != "." ]]; then
ENV_NAME="${PROJECT_ROOT:t}"
fi
if [[ -n $CD_VIRTUAL_ENV && "$ENV_NAME" != "$CD_VIRTUAL_ENV" ]]; then
# We've just left the repo, deactivate the environment
# Note: this only happens if the virtualenv was activated automatically
deactivate && unset CD_VIRTUAL_ENV
fi
if [[ "$ENV_NAME" != "" ]]; then
# Activate the environment only if it is not already active
if [[ "$VIRTUAL_ENV" != "$WORKON_HOME/$ENV_NAME" ]]; then
if [[ -e "$WORKON_HOME/$ENV_NAME/bin/activate" ]]; then
workon "$ENV_NAME" && export CD_VIRTUAL_ENV="$ENV_NAME"
elif [[ -e "$ENV_NAME/bin/activate" ]]; then
source $ENV_NAME/bin/activate && export CD_VIRTUAL_ENV="$ENV_NAME"
fi
fi
fi
}
# Load auto workon cwd hook
if zstyle -t ':prezto:module:python:virtualenv' auto-switch 'yes'; then
# Auto workon when changing directory
add-zsh-hook chpwd _python-workon-cwd
fi
# Load virtualenvwrapper into the shell session, unless requested not to
if zstyle -T ':prezto:module:python' skip-virtualenvwrapper-init; then
# Set the directory where virtual environments are stored.
export WORKON_HOME="${WORKON_HOME:-$HOME/.virtualenvs}"
# Disable the virtualenv prompt.
VIRTUAL_ENV_DISABLE_PROMPT=1
if (( $+commands[pyenv-virtualenvwrapper] )); then
pyenv virtualenvwrapper
elif (( $+commands[pyenv-virtualenv-init] )); then
eval "$(pyenv virtualenv-init -)"
elif (( $+commands[virtualenvwrapper_lazy.sh] )); then
source "$commands[virtualenvwrapper_lazy.sh]"
elif (( $+commands[virtualenvwrapper.sh] )); then
source "$commands[virtualenvwrapper.sh]"
fi
fi
# Load PIP completion.
if (( $+commands[pip] )); then
cache_file="${0:h}/cache.zsh"
if [[ "$commands[pip]" -nt "$cache_file" || ! -s "$cache_file" ]]; then
# pip is slow; cache its output. And also support 'pip2', 'pip3' variants
pip completion --zsh | sed -e "s|compctl -K [-_[:alnum:]]* pip|& pip2 pip3|" >! "$cache_file" 2> /dev/null
fi
source "$cache_file"
unset cache_file
fi
#
# Aliases
#
alias py='python'