Nix

MacOS Example

The following works as of nix version 2.10.3.

  1. Install the nix package manager.

  2. Configure nix by modifying and/or adding the following files.

    /etc/nix/nix.conf
    build-users-group = nixbld
sandbox = false
experimental-features = nix-command flakes
substituters = https://cache.nixos.org s3://nsstatdev-main-usae1-nix-cache https://hydra.iohk.io https://cache.iog.io https://cache.dhall-lang.org https://dhall.cachix.org 
trusted-public-keys = cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= nsstatdev-main-usae1-nix-cache-1:3qt3qqlXhyl2HGK8UE1Eh12NEmoyK8mx81uDWDAKPn4= hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ= cache.dhall-lang.org:I9/H18WHd60olG5GsIjolp7CtepSgJmM2CsO813VTmM= dhall.cachix.org-1:8laGciue2JBwD49ICFtg+cIF8ddDaW7OFBjDb/dHEAo=
post-build-hook = /etc/nix/upload-to-cache.sh
max-jobs = auto
    /etc/nix/key.private

    Request key on slack on stats-software-dev channel.

    /etc/nix/upload-to-cache.sh

    This is similar to the script that the nsBuild nix docker image uses.

    #!/bin/sh

set -eu
set -f # disable globbing
export IFS=' '

nix store sign --key-file /etc/nix/key.private $OUT_PATHS
echo "Uploading paths" $OUT_PATHS
exec nix copy --to 's3://nsstatdev-main-usae1-nix-cache' $OUT_PATHS

    Set this script to executable:

    chmod +x /etc/nix/upload-to-cache.sh

  3. Test out nix by running: nix run nixpkgs#hello. You should you see:

    Hello, world!