* nix_environments

  This is a set of various environments which can be used with the *Nix* package manager.

  Copy the =shell.nix= file from the desired folder into your project and run ~nix-shell~.
  This will drop you into a virtual environment with all requirements fulfilled.
  Please check below how the virtual environments work and how to add environment specific packages.
 
  If you need more Nix packages in your environent, enhance the list ~buildInputs~ in the file =shell.nix=.

** node

   This environment does the following:

   1. Create a directory =.npm/bin= if not existent
   2. Add the =.npm/bin= directory to the ~$PATH~ variable
   3. Upgrade npm to the latest version
   4. If the file =global_packages.txt= is present, install the packages via npm into the =.npm= directory
   5. Run ~npm install~ if a file =package.json= is present

** python

   This environment does the following:

   1. Create a new python virtualenv in the folder =.venv= if not existent
   2. Source the virtual environment
   3. Upgrade pip to the latest version
   4. If present, install the packages from the file =requirements.txt= via pip

** rust

   This environment does the following:

   1. Run ~cargo build~ if =Cargo.toml= is present