Installing ABSCAL

1. You will need to clone the ABSCAL source code from the github repository. cd into the directory where you would like to store the source code and run:

   git clone https://github.com/spacetelescope/ABSCAL.git
   
   cd ABSCAL
   

2. The environment file can be used in two ways:

   1. To create a new Conda environment named abscal run:

      conda env create -f environment.yml
      
      conda activate abscal
      

   2. To install to or update an existing (currently active) Conda environment:

      conda env update --file environment.yml
      

3. You can now install ABSCAL from the repository, either by using its setup script directly:

   python setup.py install
   

   or by installing via pip:

   pip install [-e] .
   

   where the -e flag makes the installation editable, and is useful if you intend to modify your local version.