README.md

This is a nixpkgs overlay with various additional cluster packages.

It includes the ability to create a Modules modulefile version of each package, rather than using nix-env as usual.

env sets up the environment for the local cluster and points to the nix install.

Individual packages can be built with nix-build -A PKGNAME ..

The update script builds a full set of modules and updates the system modules profile with the result.