GRICAD NUR repository

Basic usage

• To make NUR accessible for your login user, add the following to ~/.config/nixpkgs/config.nix:

{
  packageOverrides = pkgs: {
    nur = import (builtins.fetchTarball "https://github.com/nix-community/NUR/archive/master.tar.gz") {
      inherit pkgs;
    };
  };
}

• List the packages

$ nix-env -f "<nixpkgs>" -qaP -A nur.repos.gricad

• Install a package

$ nix-env -iA -f "<nixpkgs>" nur.repos.gricad.openmpi2-opa

Advanced usage (mostly for admins)

• Local build of a package:

nix-build --arg pkgs 'import <nixpkgs> {}' -A hello

• Optional pushing into the cache (need gricad cachix key)

nix-build --arg pkgs 'import <nixpkgs> {}' -A hello | cachix push gricad

• Force an update of the repository

curl -XPOST https://nur-update.nix-community.org/update?repo=gricad

• Configure cachix on a cluster

  • Login as root and load nix environment
  • Install cachix: nix-env -iA cachix -f https://cachix.org/api/v1/install
  • Activate cachix: cachix use gricad

• Cachix configuration for Travis

Frst, get the secretkey (from ~/.config/cachix/cachix.dhall)

travis encrypt --pro CACHIX_SIGNING_KEY="XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX=="