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nixpkgs/nixos/modules/services/misc/cgminer.nix
Eelco Dolstra 29027fd1e1 Rewrite ‘with pkgs.lib’ -> ‘with lib’
Using pkgs.lib on the spine of module evaluation is problematic
because the pkgs argument depends on the result of module
evaluation. To prevent an infinite recursion, pkgs and some of the
modules are evaluated twice, which is inefficient. Using ‘with lib’
prevents this problem.
2014-04-14 16:26:48 +02:00

145 lines
3.5 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.cgminer;
convType = with builtins;
v: if isBool v then (if v then "true" else "false") else toString v;
mergedHwConfig =
mapAttrsToList (n: v: ''"${n}": "${(concatStringsSep "," (map convType v))}"'')
(foldAttrs (n: a: [n] ++ a) [] cfg.hardware);
mergedConfig = with builtins;
mapAttrsToList (n: v: ''"${n}": ${if isBool v then "" else ''"''}${convType v}${if isBool v then "" else ''"''}'')
cfg.config;
cgminerConfig = pkgs.writeText "cgminer.conf" ''
{
${concatStringsSep ",\n" mergedHwConfig},
${concatStringsSep ",\n" mergedConfig},
"pools": [
${concatStringsSep ",\n"
(map (v: ''{"url": "${v.url}", "user": "${v.user}", "pass": "${v.pass}"}'')
cfg.pools)}]
}
'';
in
{
###### interface
options = {
services.cgminer = {
enable = mkOption {
default = false;
description = ''
Whether to enable cgminer, an ASIC/FPGA/GPU miner for bitcoin and
litecoin.
'';
};
package = mkOption {
default = pkgs.cgminer;
description = "Which cgminer derivation to use.";
type = types.package;
};
user = mkOption {
default = "cgminer";
description = "User account under which cgminer runs";
};
pools = mkOption {
default = []; # Run benchmark
description = "List of pools where to mine";
example = [{
url = "http://p2pool.org:9332";
username = "17EUZxTvs9uRmPsjPZSYUU3zCz9iwstudk";
password="X";
}];
};
hardware = mkOption {
default = []; # Run without options
description= "List of config options for every GPU";
example = [
{
intensity = 9;
gpu-engine = "0-985";
gpu-fan = "0-85";
gpu-memclock = 860;
gpu-powertune = 20;
temp-cutoff = 95;
temp-overheat = 85;
temp-target = 75;
}
{
intensity = 9;
gpu-engine = "0-950";
gpu-fan = "0-85";
gpu-memclock = 825;
gpu-powertune = 20;
temp-cutoff = 95;
temp-overheat = 85;
temp-target = 75;
}];
};
config = mkOption {
default = {};
description = "Additional config";
example = {
auto-fan = true;
auto-gpu = true;
expiry = 120;
failover-only = true;
gpu-threads = 2;
log = 5;
queue = 1;
scan-time = 60;
temp-histeresys = 3;
};
};
};
};
###### implementation
config = mkIf config.services.cgminer.enable {
users.extraUsers = optionalAttrs (cfg.user == "cgminer") (singleton
{ name = "cgminer";
uid = config.ids.uids.cgminer;
description = "Cgminer user";
});
environment.systemPackages = [ cfg.package ];
systemd.services.cgminer = {
path = [ pkgs.cgminer ];
after = [ "network.target" "display-manager.service" ];
wantedBy = [ "multi-user.target" ];
environment = {
LD_LIBRARY_PATH = ''/run/opengl-driver/lib:/run/opengl-driver-32/lib'';
DISPLAY = ":0";
GPU_MAX_ALLOC_PERCENT = "100";
GPU_USE_SYNC_OBJECTS = "1";
};
serviceConfig = {
ExecStart = "${pkgs.cgminer}/bin/cgminer --syslog --text-only --config ${cgminerConfig}";
User = cfg.user;
RestartSec = "30s";
Restart = "always";
StartLimitInterval = "1m";
};
};
};
}