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#
# Enables local Python package installation.
#
# Authors:
# Sorin Ionescu <sorin.ionescu@gmail.com>
# Sebastian Wiesner <lunaryorn@googlemail.com>
# Patrick Bos <egpbos@gmail.com>
#
# Load manually installed pyenv into the path
if [[ -n "$PYENV_ROOT" && -s "$PYENV_ROOT/bin/pyenv" ]]; then
path=("$PYENV_ROOT/bin" $path)
elif [[ -s "$HOME/.pyenv/bin/pyenv" ]]; then
path=("$HOME/.pyenv/bin" $path)
fi
# Load pyenv into the current python session
if (( $+commands[pyenv] )); then
if [[ -z "$PYENV_ROOT" ]]; then
export PYENV_ROOT=$(pyenv root)
fi
eval "$(pyenv init - --no-rehash zsh)"
# Prepend PEP 370 per user site packages directory, which defaults to
# ~/Library/Python on macOS 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] && ! $+commands[pyenv] )); then
return 1
fi
function _python-workon-cwd {
# Check if this is a Git repo
local GIT_REPO_ROOT=""
local GIT_TOPLEVEL="$(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
autoload -Uz add-zsh-hook
add-zsh-hook chpwd _python-workon-cwd
fi
# Load virtualenvwrapper into the shell session, if pre-requisites are met
# and unless explicitly requested not to
if (( $+VIRTUALENVWRAPPER_VIRTUALENV || $+commands[virtualenv] )) && \
zstyle -T ':prezto:module:python:virtualenv' initialize ; then
# Set the directory where virtual environments are stored.
export WORKON_HOME="${WORKON_HOME:-$HOME/.virtualenvs}"
# Disable the virtualenv prompt. Note that we use the magic value used by the
# pure prompt because there's some additional logic in that prompt which tries
# to figure out if a user set this variable and disable the python portion of
# that prompt based on it which is the exact opposite of what we want to do.
export VIRTUAL_ENV_DISABLE_PROMPT=12
# Create a sorted array of available virtualenv related 'pyenv' commands to
# look for plugins of interest. Scanning shell '$path' isn't enough as they
# can exist in 'pyenv' synthesized paths (e.g., '~/.pyenv/plugins') instead.
local -a pyenv_plugins
if (( $+commands[pyenv] )); then
pyenv_plugins=(${(@oM)${(f)"$(pyenv commands --no-sh 2>/dev/null)"}:#virtualenv*})
fi
if (( $pyenv_plugins[(i)virtualenv-init] <= $#pyenv_plugins )); then
# Enable 'virtualenv' with 'pyenv'.
eval "$(pyenv virtualenv-init - zsh)"
# Optionally activate 'virtualenvwrapper' plugin when available.
if (( $pyenv_plugins[(i)virtualenvwrapper(_lazy|)] <= $#pyenv_plugins )); then
pyenv "$pyenv_plugins[(R)virtualenvwrapper(_lazy|)]"
fi
else
# Fallback to 'virtualenvwrapper' without 'pyenv' wrapper if available
# in '$path' or in an alternative location on a Debian based system.
#
# If homebrew is installed and the python location wasn't overridden via
# environment variable we fall back to python3 then python2 in that order.
# This is needed to fix an issue with virtualenvwrapper as homebrew no
# longer shadows the system python.
if [[ -z "$VIRTUALENVWRAPPER_PYTHON" ]] && (( $+commands[brew] )); then
if (( $+commands[python3] )); then
export VIRTUALENVWRAPPER_PYTHON=$commands[python3]
elif (( $+commands[python2] )); then
export VIRTUALENVWRAPPER_PYTHON=$commands[python2]
fi
fi
virtenv_sources=(
${(@Ov)commands[(I)virtualenvwrapper(_lazy|).sh]}
/usr/share/virtualenvwrapper/virtualenvwrapper(_lazy|).sh(OnN)
)
if (( $#virtenv_sources )); then
source "${virtenv_sources[1]}"
fi
unset virtenv_sources
fi
unset pyenv_plugins
fi
# Load PIP completion.
if (( $#commands[(i)pip(|[23])] )); then
cache_file="${TMPDIR:-/tmp}/prezto-pip-cache.$UID.zsh"
# Detect and use one available from among 'pip', 'pip2', 'pip3' variants
pip_command="$commands[(i)pip(|[23])]"
if [[ "$pip_command" -nt "$cache_file" \
|| "${ZDOTDIR:-$HOME}/.zpreztorc" -nt "$cache_file" \
|| ! -s "$cache_file" ]]; then
# pip is slow; cache its output. And also support 'pip2', 'pip3' variants
$pip_command completion --zsh \
| sed -e "s/\(compctl -K [-_[:alnum:]]* pip\).*/\1{,2,3}{,.{0..9}}/" \
>! "$cache_file" \
2> /dev/null
fi
source "$cache_file"
unset cache_file pip_command
fi
# Load conda into the shell session, if requested
zstyle -T ':prezto:module:python' conda-init
if (( $? && $+commands[conda] )); then
if (( $(conda ..changeps1) )); then
echo "To make sure Conda doesn't change your prompt (should do that in the prompt module) run:\n conda config --set changeps1 false"
# TODO:
# We could just run this ourselves. In an exit hook
# (add zsh-hook zshexit [(anonymous) function]) we could then set it back
# to the way it was before we changed it. However, I'm not sure if this is
# exception safe, so left it like this for now.
fi
fi
#
# Aliases
#
alias py='python'
alias py2='python2'
alias py3='python3'
alias pip2-update="pip2 freeze --local | grep -v '^\-e' | cut -d = -f 1 | xargs -n1 pip2 install -U"
alias pip3-update="pip3 freeze --local | grep -v '^\-e' | cut -d = -f 1 | xargs -n1 pip3 install -U"
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