nixos/applications/nix_cache/nix_cache.nix

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/*
A nix cache for our use
atticd-atticadm make-token --sub "admin_username" --validity "10y" --pull "*" --push "*" --create-cache "*" --delete "*" --configure-cache "*" --configure-cache-retention "*" --destroy-cache "*"
# for the gitlab runner, done eyarly
atticd-atticadm make-token --sub "wheatly-runner" --validity "1y" --pull "skynet-cache" --push "skynet-cache"
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Documentation:
https://docs.attic.rs/introduction.html
*/
{
lib,
config,
pkgs,
inputs,
...
}:
with lib; let
name = "nix-cache";
cfg = config.services.skynet."${name}";
in {
imports = [
inputs.attic.nixosModules.atticd
];
options.services.skynet."${name}" = {
enable = mkEnableOption "Skynet Nix Cache";
};
config = mkIf cfg.enable {
services.skynet.acme.domains = [
"${name}.skynet.ie"
];
services.skynet.dns.records = [
{
record = "${name}";
r_type = "CNAME";
value = config.services.skynet.host.name;
}
];
users.groups."nix-serve" = {};
users.users."nix-serve" = {
isSystemUser = true;
group = "nix-serve";
};
services.atticd = {
enable = true;
# Replace with absolute path to your credentials file
credentialsFile = "/etc/atticd.env";
settings = {
listen = "127.0.0.1:8080";
# Data chunking
#
# Warning: If you change any of the values here, it will be
# difficult to reuse existing chunks for newly-uploaded NARs
# since the cutpoints will be different. As a result, the
# deduplication ratio will suffer for a while after the change.
chunking = {
# The minimum NAR size to trigger chunking
#
# If 0, chunking is disabled entirely for newly-uploaded NARs.
# If 1, all NARs are chunked.
nar-size-threshold = 64 * 1024; # 64 KiB
# The preferred minimum size of a chunk, in bytes
min-size = 16 * 1024; # 16 KiB
# The preferred average size of a chunk, in bytes
avg-size = 64 * 1024; # 64 KiB
# The preferred maximum size of a chunk, in bytes
max-size = 256 * 1024; # 256 KiB
};
};
};
networking.firewall.allowedTCPPorts = [80 443];
services.nginx = {
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clientMaxBodySize = "500m";
virtualHosts = {
"${name}.skynet.ie" = {
forceSSL = true;
useACMEHost = "skynet";
locations."/" = {
proxyPass = "http://127.0.0.1:8080";
};
};
};
};
};
}