Installation

Python

\(\text{FeO}_\text{s}\) is available on PyPI. You can install it using pip:

pip install feos

If you have a Rust compiler installed and want to have the latest development version (github main branch), you can build and install the python wheel via

pip install git+https://github.com/feos-org/feos

Rust

In Rust, the feos-dft crate and each equation of state or DFT functional is a separate, optional module behind a feature flag. To use \(\text{FeO}_\text{s}\) with all models (including Python bindings), use the all_models feature:

[dependencies]
feos-core = "0.4"
feos = { version="0.4", features = ["all_models"] }
quantity = "0.6"

To access the generic implementations for properties and phase equilibria, the feos-core crate is also included as dependency. Finally, \(\text{FeO}_\text{s}\) makes extensive use of SI units provided by the quantity crate.

In the following example we use only the PC-SAFT equation of state and Helmholtz energy functionals (without Python bindings):

[dependencies]
feos-core = "0.4"
feos-dft = "0.4"
feos = { version="0.4", features = ["dft", "pcsaft"] }
quantity = "0.6"

To access generic DFT functionalities like interfaces and adsorption isotherms, the feos-dft crate is added to the dependencies.