mirror of
https://github.com/hcartiaux/dotfiles.git
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117 lines
3.8 KiB
Bash
117 lines
3.8 KiB
Bash
# -*- mode: sh; -*-
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# Custom global configuration for [direnv](https://direnv.net/)
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# i.e. override/complete the direnv-stdlib:
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# https://github.com/direnv/direnv/blob/master/stdlib.sh
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#
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# Quick installation of this file:
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# mkdir -p ~/.config/direnv
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# cd ~/.config/direnv
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# curl -o direnvrc https://raw.githubusercontent.com/Falkor/dotfiles/master/direnv/direnvrc
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#
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# Sample .envrc you can use for Python projects based on the
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# layouts defined in this file:
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# https://github.com/Falkor/dotfiles/blob/master/direnv/envrc
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#
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############################ Python ############################
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# Workfow based on:
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# - 'pyenv' to easily switch to a special version of python
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# - 'pyenv-virtualenv' to manage python versions AND virtualenvs
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#
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# Typical .envrc for your python project using the below functions:
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# if [ -f ".python-version" ]; then
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# pyversion=$(head .python-version)
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# else
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# pyversion=2.7.16
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# fi
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# pvenv=$(basename $PWD)
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#
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# use python ${pyversion}
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# layout virtualenv ${pyversion} ${pvenv}
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# layout activate ${pvenv}
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#
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# Adapted from
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# - https://github.com/direnv/direnv/wiki/Python#-pyenv and
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# - https://github.com/direnv/direnv/wiki/Python#-virtualenvwrapper
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# - https://github.com/direnv/direnv/wiki/Python#venv-stdlib-module
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#
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# Side note:
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# It appeared required to reload the pyenv [virtualenv-]init as for
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# It May be due to the fact that direnv is creating a new bash
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# sub-process to load the stdlib, direnvrc and .envrc
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###
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# === Use a specific python version (with pyenv) ===
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# Usage in .envrc:
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# use python <version>
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use_python() {
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if has pyenv; then
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local pyversion=$1
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eval "$(pyenv init --path)"
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eval "$(pyenv init -)"
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pyenv local ${pyversion} || log_error "Could not find pyenv version '${pyversion}'. Consider running 'pyenv install ${pyversion}'"
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fi
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}
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# === Support for Python >=3.3 venv ===
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# See https://github.com/direnv/direnv/wiki/Python#venv-stdlib-module
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# Python 3.3 and later provide built-in support for virtual environments via the venv module in the standard library.
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# Usage in .envrc:
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# export VIRTUAL_ENV_HOME=.venv # Default: ~/venv
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# layout python-venv <name> # creates ${VIRTUAL_ENV_HOME}/<name> venv
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realpath() {
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[[ $1 = /* ]] && echo "$1" || echo "$PWD/${1#./}"
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}
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layout_python-venv() {
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local pvenv=$1
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VIRTUAL_ENV_HOME=${VIRTUAL_ENV_HOME:-~/venv}
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VIRTUAL_ENV=${VIRTUAL_ENV:-${VIRTUAL_ENV_HOME}/${pvenv}}
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unset PYTHONHOME
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export VIRTUAL_ENV
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if [[ ! -d $VIRTUAL_ENV ]]; then
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log_status "no venv found; creating $VIRTUAL_ENV"
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python3 -m venv "$VIRTUAL_ENV"
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fi
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PATH_add "${VIRTUAL_ENV}/bin"
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}
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# === Create a new virtualenv ===
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# Usage in .envrc:
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# layout virtualenv <version> <name>
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layout_virtualenv() {
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local pyversion=$1
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local pvenv=$2
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if has pyenv; then
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pyenv local ${pyversion}
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if [ -n "$(which pyenv-virtualenv)" ]; then
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eval "$(pyenv virtualenv-init -)"
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pyenv virtualenv --force --quiet ${pyversion} ${pvenv}
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else
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log_error "pyenv-virtualenv is not installed."
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fi
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elif has python3; then
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# Use venv by default
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layout_python-venv ${pvenv}
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else
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log_error "pyenv or python3 venv not found."
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fi
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}
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# === Activate a virtualenv ===
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# Note that pyenv-virtualenv uses 'python -m venv' if it is
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# available (CPython 3.3 and newer) and 'virtualenv' otherwise
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# Usage in .envrc:
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# layout activate <name>
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layout_activate() {
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if has pyenv; then
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local pyenvprefix=$(pyenv prefix)
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local pyversion=$(pyenv version-name)
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local pvenv="$1"
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# Below initialization is necessary to recall ;(
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pyenv activate ${pvenv}
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else
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source ${VIRTUAL_ENV}/bin/activate
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fi
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}
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