https://github.com/21cmfast/21cmFAST

https://21cmfast.readthedocs.io/en/latest/installation.html

Create a conda environment, activate and install as following.

conda create --name=envnam
conda activate envnam
conda install -c conda-forge 21cmFAST

Install on Ubuntu 20.04 LTS.

Inside your conda environment

Install gsl and fftw: conda install -c conda-forge gsl fftw

And then install 21cmFAST:

LIB=~/anaconda3/envs/myenv/lib INC=~/anaconda3/envs/myenv/include conda install -c conda-forge 21cmFAST

Then clone the 21cmFAST directory into your home and move the data directory to your home.

git clone https://github.com/21cmfast/21cmFAST
cd
mkdir .21cmfast
mv ~21cmFAST/src/py21cmfast/_data ~/.21cmfast/External_tables