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# QuAcK
QuAcK is a small quantum chemistry package which does some weird stuff.
**Contributors:**
- [Pierre-Francois Loos](https://pfloos.github.io/WEB_LOOS)
- [Enzo Monino](https://enzomonino.github.io)
- [Antoine Marie](https://antoine-marie.github.io)
# What is it?
In particular, quack can perform
i) various types of GW calculations (G0W0, evGW, qsGW, etc).
ii) ensemble DFT calculations (under progress)
# Installation guide
The QuAcK software can be downloaded on GitHub as a Git repository
```
git clone https://github.com/pfloos/qcmath.git
```
QuAcK also includes a very slow integral package called IntPak which does compute many types of different integrals.
Then, one must define the variable `QCMATH_ROOT` and install [PySCF](https://pyscf.org) using `pip`
```
pip install pyscf
```
PySCF is used for the computation of one- and two-electron integrals.
# Quick start