extremist-software/modules/harmonia.nix

43 lines
1.1 KiB
Nix

{ config, pkgs, ... }:
let
cacheKeyDir = "/var/lib/harmonia";
privKeyPath = "${cacheKeyDir}/cache-priv-key.pem";
pubKeyPath = "${cacheKeyDir}/cache-pub-key.pem";
in
{
# Generate signing key pair on first boot
systemd.services.harmonia-setup = {
description = "Generate Harmonia binary cache signing key";
wantedBy = [ "multi-user.target" ];
before = [ "harmonia.service" ];
serviceConfig = {
Type = "oneshot";
RemainAfterExit = true;
};
script = ''
if [ ! -f ${privKeyPath} ]; then
mkdir -p ${cacheKeyDir}
${pkgs.nix}/bin/nix-store --generate-binary-cache-key cache.extremist.software-1 ${privKeyPath} ${pubKeyPath}
chmod 600 ${privKeyPath}
chmod 644 ${pubKeyPath}
echo "Signing key generated. Public key:"
cat ${pubKeyPath}
fi
'';
};
# Harmonia binary cache server
services.harmonia = {
enable = true;
signKeyPath = privKeyPath;
settings.bind = "[::]:5000";
};
# Caddy reverse proxy for the cache
services.caddy.virtualHosts."cache.extremist.software" = {
extraConfig = ''
reverse_proxy localhost:5000
'';
};
}