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coin_ynh/scripts/ynh_install_python
2022-11-07 20:37:10 +01:00

267 lines
9.3 KiB
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#!/bin/bash
ynh_python_try_bash_extension() {
if [ -x src/configure ]; then
src/configure && make -C src || {
ynh_print_info --message="Optional bash extension failed to build, but things will still work normally."
}
fi
}
pyenv_install_dir="/opt/pyenv"
python_version_path="$pyenv_install_dir/versions"
# PYENV_ROOT is the directory of pyenv, it needs to be loaded as a environment variable.
export PYENV_ROOT="$pyenv_install_dir"
export pyenv_root="$pyenv_install_dir"
# Required dependencies
pyenv_dependencies="make build-essential libssl-dev zlib1g-dev libbz2-dev libreadline-dev libsqlite3-dev wget curl llvm libncursesw5-dev xz-utils tk-dev libxml2-dev libxmlsec1-dev libffi-dev liblzma-dev git"
# Load the version of Python for an app, and set variables.
#
# ynh_use_python has to be used in any app scripts before using Python for the first time.
# This helper will provide alias and variables to use in your scripts.
#
# To use pip or Python, use the alias `ynh_pip` and `ynh_python`
# Those alias will use the correct version installed for the app
# For example: use `ynh_pip install` instead of `pip install`
#
# With `sudo` or `ynh_exec_as`, use instead the fallback variables `$ynh_pip` and `$ynh_python`
# And propagate $PATH to sudo with $ynh_python_load_path
# Exemple: `ynh_exec_as $app $ynh_python_load_path $ynh_pip install`
#
# $PATH contains the path of the requested version of Python.
# However, $PATH is duplicated into $ynh_python_path to outlast any manipulation of $PATH
# You can use the variable `$ynh_python_load_path` to quickly load your Python version
# in $PATH for an usage into a separate script.
# Exemple: $ynh_python_load_path $final_path/script_that_use_pip.sh`
#
#
# Finally, to start a Python service with the correct version, 2 solutions
# Either the app is dependent of python or pip, but does not called it directly.
# In such situation, you need to load PATH
# `Environment="__YNH_PYTHON_LOAD_PATH__"`
# `ExecStart=__FINALPATH__/my_app`
# You will replace __YNH_PYTHON_LOAD_PATH__ with $ynh_python_load_path
#
# Or Python start the app directly, then you don't need to load the PATH variable
# `ExecStart=__YNH_PYTHON__ my_app run`
# You will replace __YNH_PYTHON__ with $ynh_python
#
# one other variable is also available
# - $ynh_python_path: The absolute path to Python binaries for the chosen version.
#
# usage: ynh_use_python
#
# Requires YunoHost version 3.2.2 or higher.
ynh_use_python () {
python_version=$(ynh_app_setting_get --app=$app --key=python_version)
# Get the absolute path of this version of Python
ynh_python_path="$python_version_path/$YNH_APP_INSTANCE_NAME/bin"
# Allow alias to be used into bash script
shopt -s expand_aliases
# Create an alias for the specific version of Python and a variable as fallback
ynh_python="$ynh_python_path/python"
alias ynh_python="$ynh_python"
# And pip
ynh_pip="$ynh_python_path/pip"
alias ynh_pip="$ynh_pip"
# Load the path of this version of Python in $PATH
if [[ :$PATH: != *":$ynh_python_path"* ]]; then
PATH="$ynh_python_path:$PATH"
fi
# Create an alias to easily load the PATH
ynh_python_load_path="PATH=$PATH"
# Sets the local application-specific Python version
pushd $final_path
$pyenv_install_dir/bin/pyenv local $python_version
popd
}
# Install a specific version of Python
#
# ynh_install_python will install the version of Python provided as argument by using pyenv.
#
# This helper creates a /etc/profile.d/pyenv.sh that configures PATH environment for pyenv
# for every LOGIN user, hence your user must have a defined shell (as opposed to /usr/sbin/nologin)
#
# Don't forget to execute python-dependent command in a login environment
# (e.g. sudo --login option)
# When not possible (e.g. in systemd service definition), please use direct path
# to pyenv shims (e.g. $PYENV_ROOT/shims/bundle)
#
# usage: ynh_install_python --python_version=python_version
# | arg: -v, --python_version= - Version of Python to install.
#
# Requires YunoHost version 3.2.2 or higher.
ynh_install_python () {
# Declare an array to define the options of this helper.
local legacy_args=v
local -A args_array=( [v]=python_version= )
local python_version
# Manage arguments with getopts
ynh_handle_getopts_args "$@"
# Install required dependencies
ynh_add_app_dependencies --package="$pyenv_dependencies"
# Load pyenv path in PATH
local CLEAR_PATH="$pyenv_install_dir/bin:$PATH"
# Remove /usr/local/bin in PATH in case of Python prior installation
PATH=$(echo $CLEAR_PATH | sed 's@/usr/local/bin:@@')
# Move an existing Python binary, to avoid to block pyenv
#test -x /usr/bin/python && mv /usr/bin/python /usr/bin/python_pyenv
# Install or update pyenv
pyenv="$(command -v pyenv $pyenv_install_dir/bin/pyenv | head -1)"
if [ -n "$pyenv" ]; then
ynh_print_info --message="pyenv already seems installed in \`$pyenv'."
pushd "${pyenv%/*/*}"
if git remote -v 2>/dev/null | grep "https://github.com/pyenv/pyenv.git"; then
ynh_print_info --message="Trying to update with git..."
git pull -q --tags origin master
cd ..
ynh_python_try_bash_extension
fi
popd
else
ynh_print_info --message="Installing pyenv with git..."
mkdir -p $pyenv_install_dir
pushd $pyenv_install_dir
git init -q
git remote add -f -t master origin https://github.com/pyenv/pyenv.git > /dev/null 2>&1
git checkout -q -b master origin/master
ynh_python_try_bash_extension
pyenv=$pyenv_install_dir/bin/pyenv
popd
fi
pyenv_virtualenv="$(command -v "$pyenv_install_dir"/plugins/*/bin/pyenv-virtualenv pyenv-virtualenv | head -1)"
if [ -n "$pyenv_virtualenv" ]; then
ynh_print_info --message="\`pyenv virtualenv' command already available in \`$pyenv_virtualenv'."
pushd "${pyenv_virtualenv%/*/*}"
if git remote -v 2>/dev/null | grep "https://github.com/pyenv/pyenv-virtualenv.git"; then
ynh_print_info --message="Trying to update pyenv-virtualenv with git..."
git pull -q origin master
fi
popd
else
ynh_print_info --message="Installing pyenv-virtualenv with git..."
mkdir -p "${pyenv_install_dir}/plugins"
git clone -q https://github.com/pyenv/pyenv-virtualenv.git "${pyenv_install_dir}/plugins/pyenv-virtualenv"
fi
# Enable caching
mkdir -p "${pyenv_install_dir}/cache"
# Create shims directory if needed
mkdir -p "${pyenv_install_dir}/shims"
chmod -R a+w "${pyenv_install_dir}/shims"
# Restore /usr/local/bin in PATH
PATH=$CLEAR_PATH
# And replace the old Python binary
# test -x /usr/bin/python_pyenv && mv /usr/bin/python_pyenv /usr/bin/python
# Install the requested version of Python
ynh_print_info --message="Installation of Python-$python_version"
pyenv install --skip-existing $python_version > /dev/null 2>&1
# Store python_version into the config of this app
ynh_app_setting_set --app=$YNH_APP_INSTANCE_NAME --key=python_version --value=$python_version
# Remove app virtualenv
if `pyenv virtualenvs | grep --quiet "$YNH_APP_INSTANCE_NAME " 1>/dev/null 2>&1`
then
pyenv virtualenv-delete --force $YNH_APP_INSTANCE_NAME
fi
# Create app virtualenv
pyenv virtualenv --force $python_version $YNH_APP_INSTANCE_NAME
# Cleanup Python versions
ynh_cleanup_python
# Set environment for Python users
echo "#pyenv
export PYENV_ROOT=$pyenv_install_dir
export PATH=\"$pyenv_install_dir/bin:$PATH\"
eval \"\$(pyenv init -)\"
#pyenv" > /etc/profile.d/pyenv.sh
# Load the environment
eval "$(pyenv init -)"
}
# Remove the version of Python used by the app.
#
# This helper will also cleanup Python versions
#
# usage: ynh_remove_python
ynh_remove_python () {
local python_version=$(ynh_app_setting_get --app=$YNH_APP_INSTANCE_NAME --key=python_version)
# Load pyenv path in PATH
local CLEAR_PATH="$pyenv_install_dir/bin:$PATH"
# Remove /usr/local/bin in PATH in case of Python prior installation
PATH=$(echo $CLEAR_PATH | sed 's@/usr/local/bin:@@')
pyenv virtualenv-delete --force $YNH_APP_INSTANCE_NAME
# Remove the line for this app
ynh_app_setting_delete --app=$YNH_APP_INSTANCE_NAME --key=python_version
# Cleanup Python versions
ynh_cleanup_python
}
# Remove no more needed versions of Python used by the app.
#
# This helper will check what Python version are no more required,
# and uninstall them
# If no app uses Python, pyenv will be also removed.
#
# usage: ynh_cleanup_python
ynh_cleanup_python () {
# List required Python versions
local installed_apps=$(yunohost app list | grep -oP 'id: \K.*$')
local required_python_versions=""
for installed_app in $installed_apps
do
local installed_app_python_version=$(ynh_app_setting_get --app=$installed_app --key="python_version")
if [[ $installed_app_python_version ]]
then
required_python_versions="${installed_app_python_version}\n${required_python_versions}"
fi
done
# Remove no more needed Python versions
local installed_python_versions=$(pyenv versions --bare --skip-aliases | grep -Ev '/')
for installed_python_version in $installed_python_versions
do
if ! `echo ${required_python_versions} | grep "${installed_python_version}" 1>/dev/null 2>&1`
then
ynh_print_info --message="Removing of Python-$installed_python_version"
$pyenv_install_dir/bin/pyenv uninstall --force $installed_python_version
fi
done
# If none Python version is required
if [[ ! $required_python_versions ]]
then
# Remove pyenv environment configuration
ynh_print_info --message="Removing of pyenv-$pyenv_version"
ynh_secure_remove --file="$pyenv_install_dir"
ynh_secure_remove --file="/etc/profile.d/pyenv.sh"
fi
}