blob: 144fa6c708e28be30ad48f029a7aee8930bdccfd (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
|
{ config, pkgs, lib, ... }:
let
cfg = config.services.harmonia;
format = pkgs.formats.toml { };
in
{
options = {
services.harmonia = {
enable = lib.mkEnableOption (lib.mdDoc "Harmonia: Nix binary cache written in Rust");
signKeyPath = lib.mkOption {
type = lib.types.nullOr lib.types.path;
default = null;
description = lib.mdDoc "Path to the signing key that will be used for signing the cache";
};
package = lib.mkPackageOptionMD pkgs "harmonia" { };
settings = lib.mkOption {
inherit (format) type;
default = { };
description = lib.mdDoc ''
Settings to merge with the default configuration.
For the list of the default configuration, see <https://github.com/nix-community/harmonia/tree/master#configuration>.
'';
};
};
};
config = lib.mkIf cfg.enable {
systemd.services.harmonia = {
description = "harmonia binary cache service";
requires = [ "nix-daemon.socket" ];
after = [ "network.target" ];
wantedBy = [ "multi-user.target" ];
environment = {
CONFIG_FILE = format.generate "harmonia.toml" cfg.settings;
SIGN_KEY_PATH = lib.mkIf (cfg.signKeyPath != null) "%d/sign-key";
# Note: it's important to set this for nix-store, because it wants to use
# $HOME in order to use a temporary cache dir. bizarre failures will occur
# otherwise
HOME = "/run/harmonia";
};
serviceConfig = {
ExecStart = lib.getExe cfg.package;
User = "harmonia";
Group = "harmonia";
DynamicUser = true;
PrivateUsers = true;
DeviceAllow = [ "" ];
UMask = "0066";
RuntimeDirectory = "harmonia";
LoadCredential = lib.mkIf (cfg.signKeyPath != null) [ "sign-key:${cfg.signKeyPath}" ];
SystemCallFilter = [
"@system-service"
"~@privileged"
"~@resources"
];
CapabilityBoundingSet = "";
ProtectKernelModules = true;
ProtectKernelTunables = true;
ProtectControlGroups = true;
ProtectKernelLogs = true;
ProtectHostname = true;
ProtectClock = true;
RestrictRealtime = true;
MemoryDenyWriteExecute = true;
ProcSubset = "pid";
ProtectProc = "invisible";
RestrictNamespaces = true;
SystemCallArchitectures = "native";
PrivateNetwork = false;
PrivateTmp = true;
PrivateDevices = true;
PrivateMounts = true;
NoNewPrivileges = true;
ProtectSystem = "strict";
ProtectHome = true;
LockPersonality = true;
RestrictAddressFamilies = "AF_UNIX AF_INET AF_INET6";
LimitNOFILE = 65536;
};
};
};
}
|