Add section about Nix and NixOS under docs/installation/installation-…

…packages

pages/docs/installation/installation-packages.md

@@ -32,6 +32,28 @@ Please have a look at the official [AUR wiki page](https://wiki.archlinux.org/in
 
 The community also maintains a [development version](https://aur.archlinux.org/packages/precice-git) and [several other packages](https://aur.archlinux.org/packages?&K=precice).
 
+## Nix / NixOS
+
+In addition to the community efforts listed above, preCICE and several of the bindings and adapters are available for Nix in the [precice/nix-packages repository](https://github.com/precice/nix-packages/).
+
+If you are using Nix (or NixOS for that matter), you can simply run the command
+
+```sh
+nix shell github:precice/nix-packages#precice-calculix-adapter github:precice/nix-packages#precice-openfoam-adapter
+```
+
+for instance, which will drop you into a shell with the CalculiX adapter and the OpenFOAM adapter accessible.
+For more information, please consult the `README.md` file in the repository.
+All available outputs of the Nix flake can be shown by running `nix flake show github:precice/nix-packages`.
+
+The Nix flake also contains the outputs `vm`, `iso` and `vagrant-vbox-image`, which output a VM in several formats containing a remake of the [preCICE distribution v2211.0](installation-vm.html).
+To run the preCICE VM you can, on a NixOS system, simply run `nix run github:precice/nix-packages`.
+Note that this will build all the components needed for the preCICE VM locally on your machine, if they cannot be fetched from the upstream binary cache.
+A full build of the VM can take several hours, depending on the hardware used.
+For more options have a look at the [readme](https://github.com/precice/nix-packages#readme) in the repository.
+
+For all packages available upstream, see the [NixOS search](https://search.nixos.org/packages?channel=unstable&from=0&size=50&sort=relevance&query=precice).
+
 ## Something else
 
 For other systems you need to either use [Spack](installation-spack.html) or [build from source](installation-source-preparation.html).
@@ -42,7 +64,6 @@ These packages are maintained by the preCICE community and may be occasionally o
 However, we appreciate the effort and you may be able to contribute to them.
 
 - [MSYS2](https://packages.msys2.org/base/mingw-w64-precice) (for Windows, built with MinGW), [thread on our forum](https://precice.discourse.group/t/precice-and-mingw-packages/382)
-- [Nix / NixOS](https://search.nixos.org/packages?channel=unstable&from=0&size=50&sort=relevance&query=precice)
 - [EasyBuild](https://github.com/easybuilders/easybuild-easyconfigs/tree/develop/easybuild/easyconfigs/p/preCICE)
 - [Conda](https://anaconda.org/conda-forge/precice) (see also packages [pyprecice](https://anaconda.org/conda-forge/pyprecice) and [fenicsprecice](https://anaconda.org/conda-forge/fenicsprecice))
 - [FreeBSD](https://www.freshports.org/science/precice)