47 lines
1.6 KiB
Nix
47 lines
1.6 KiB
Nix
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## Tenant-specific build capacity.
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## This can come from anywhere and is not hold to the same level of responsibility that our build-infra has.
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{ pkgs, config, lib, nodes, ... }:
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let
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inherit (lib) mkIf types mkEnableOption mkOption;
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freeGbDiskSpace = 10;
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cfg = config.bagel.builders.extra-build-capacity.provider;
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in
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{
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options.bagel.builders.extra-build-capacity.provider = {
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enable = mkEnableOption "providing of extra build capacity to other systems";
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buildfarmPublicKeys = mkOption {
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type = types.listOf types.str;
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description = "SSH public keys to allow to connect for remote builds";
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};
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# TODO: register tenant in some deployment wide module
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# so that the consumer side can just automatically generate buildMachines entries.
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tenant = mkOption {
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type = types.enum [ "lix" ];
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};
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};
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config = mkIf cfg.enable {
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users.groups.builders = {};
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users.users.nix = {
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openssh.authorizedKeys.keys = cfg.buildfarmPublicKeys;
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extraGroups = [ "builders" ];
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isNormalUser = true;
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};
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nix.settings.allowed-users = [ "@wheel" "@builders" ];
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nix.settings.trusted-users = [ "@builders" ];
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nix.gc.automatic = true;
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nix.gc.dates = "hourly";
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nix.gc.options = ''
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--max-freed "$((${toString freeGbDiskSpace} * 1024**3 - 1024 * $(df -P -k /nix/store | tail -n 1 | ${pkgs.gawk}/bin/awk '{ print $4 }')))"
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'';
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# Bump the open files limit so that non-root users can run NixOS VM tests, if supported at all.
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security.pam.loginLimits = [
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{ domain = "*"; item = "nofile"; type = "-"; value = "20480"; }
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];
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};
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}
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