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Conda Forge est analogue à [https://pypi.org/ the Python Package Index (PyPI)], un canal communautaire composé de milliers de contributeurs et sert [https://anaconda.org/conda-forge/freecad freecad ] en tant que package conda.
Conda Forge est analogue à [https://pypi.org/ the Python Package Index (PyPI)], un canal communautaire composé de milliers de contributeurs et sert [https://anaconda.org/conda-forge/freecad freecad ] en tant que package conda.


===Conda as a Dependency Manager===
=== Conda en tant que gestionnaire de dépendances ===


Next, Conda is a dependency manager, also similar to <code>apt</code> or <code>pip</code>.
Next, Conda is a dependency manager, also similar to <code>apt</code> or <code>pip</code>.

Revision as of 16:29, 2 October 2020

Introduction

Cette page est destinée à présenter Conda en tant que gestionnaire de packages, de dépendances et d'environnement pour FreeCAD.

Actuellement, cette page répertorie principalement des liens vers des forums de discussion FreeCAD pertinents et d'autres endroits sur le Web, mais l'espoir est de documenter les points saillants de ces liens dans cette page.

Motivation

La motivation pour utiliser Conda est multiple, tout comme le but de Conda.

Décomposons-le.

Conda en tant que gestionnaire de packages

Premièrement, Conda est un gestionnaire de paquets - similaire à apt ou pip.

Cela signifie que nous pouvons installer des packages avec une simple conda install à partir de divers canaux tels que conda-forge.

Conda Forge est analogue à the Python Package Index (PyPI), un canal communautaire composé de milliers de contributeurs et sert freecad en tant que package conda.

Conda en tant que gestionnaire de dépendances

Next, Conda is a dependency manager, also similar to apt or pip.

Conda can manage the dependencies and install the dependencies for a project like FreeCAD.

Why not just use pip? pip works really well for managing the dependencies of projects that only use python.

Conda works for multiple languages, and is therefore better suited for managing the dependencies of projects like FreeCAD that have dependencies across a variety of languages like C / C++ and Python.

Conda as a Environment Manager

Conda has the concept of an environment which is the unique combination of packages and versions needed to run a piece of software. For example, a FreeCAD workbench.

With environments, you can easily "activate" and "deactivate" them, or switch between versions of packages needed for particular pieces of software.

This is useful for testing how a workbench behaves with a particular set of packages. For example, how does a workbench behave in FreeCAD 18.4 vs 19?

Conda environments allow you to reproduce the same exact environment on different machines.

For example, multiple local developer machines, or a remote build-server hosted by Travis CI.

Installing Conda

1. Install Miniconda.

2. Verify your installation was successful and familiarize yourself with the conda CLI. $ conda --help

Installing FreeCAD Using Conda

First, you need to decide whether you want to install a stable version of FreeCAD, or experiment with the latest unstable code from FreeCAD master.

Stable released versions of FreeCAD are served on the conda-forge channel, while the latest from FreeCAD master is served on the freecad/label/dev channel.

Conda Channel Stable?
conda-forge Yes ✔️
freecad/label/dev No ❌

Secondly, since you can easily create dedicated environments in conda, it's recommended to create one for FreeCAD.

The create command allows you to create an environment from a list of specified packages. In our case, we want to create an environment called "fcenv" (short for FreeCAD environment) from the freecad package, and tell conda to search for the freecad package using the conda-forge channel.

conda create --name fcenv --channel conda-forge freecad

Tip: You can alternatively tell conda to always search conda-forge when installing packages with the following command:

conda config --add channels conda-forge

The weekly builds can be installed from the freecad/label/dev channel like so:

conda create --name fcenv-dev --channel freecad/label/dev freecad

FreeCAD Forum Discussion

See Also