Numina Deployment with Virtualenv
Virtualenv is a tool to build isolated Python environments.
Since Python version 3.3, there is also a module in the standard library called venv with roughly the same functionality.
Create Virtual Environment
In order to create a virtual environment called e.g. numinaenv using venv:
python3 -m venv numinaenv
Activate the Environment
Once the environment is created, you need to activate it. The activation script in in the bin/ folder created under numinaenv. Just source the script `activate:
Notice that the prompt changes once you have activated the environment. To deactivate it, just type deactivate:
(numinaenv) $ deactivate
We are assuming that the user shell is bash. There are alternative activate scripts for tcsh and fish called activate.csh and activate.fish
After the environment activation, we can install numina with pip. This is the standard Python tool for package management. It will download the package and its dependencies, unpack everything and compile when needed:
(numinaenv) $ pip install numina
The requirements of numina will be downloaded and installed inside the virtual environment automatically.
You can also update numina, if your environment contains already a installed version:
(numinaenv) $ pip install -U numina
You can also install directly from the git repository. pip can access individual branches, particular commits or just the latest code. For example this will install the latest development version:
(numinaenv) $ pip install git+https://github.com/guaix-ucm/numina.git
Check the pip documentation for the syntax of other types of packages sources.
Test the installation
We can test the installation by running the
(numinaenv) $ numina
INFO: Numina simple recipe runner version 0.20