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-The QuAcK software can be downloaded on GitHub as a Git repository
-```
-git clone https://github.com/pfloos/QuAcK.git
-```
-
-Then, one must define the variable `QUACK_ROOT`. For example, 
-```
-export QUACK_ROOT=$HOME/Work/QuAcK
-```
-You must also install [PySCF](https://pyscf.org) (for example using `pip`)
-```
-pip install pyscf
-```
-
-PySCF is used for the computation of one- and two-electron integrals (mainly).