From 2754d1a8c3820abb9cf90a01af0f6d6d0de3bf34 Mon Sep 17 00:00:00 2001
From: Franz Pletz <fpletz@fnordicwalking.de>
Date: Thu, 14 Dec 2017 09:00:03 +0100
Subject: [PATCH] xmr-stak module: init

---
 nixos/modules/module-list.nix            |  1 +
 nixos/modules/services/misc/xmr-stak.nix | 73 ++++++++++++++++++++++++
 pkgs/top-level/all-packages.nix          |  4 +-
 3 files changed, 77 insertions(+), 1 deletion(-)
 create mode 100644 nixos/modules/services/misc/xmr-stak.nix

diff --git a/nixos/modules/module-list.nix b/nixos/modules/module-list.nix
index 5f5ebae891f..b03d9aa2fcb 100644
--- a/nixos/modules/module-list.nix
+++ b/nixos/modules/module-list.nix
@@ -354,6 +354,7 @@
   ./services/misc/taskserver
   ./services/misc/tzupdate.nix
   ./services/misc/uhub.nix
+  ./services/misc/xmr-stak.nix
   ./services/misc/zookeeper.nix
   ./services/monitoring/apcupsd.nix
   ./services/monitoring/arbtt.nix
diff --git a/nixos/modules/services/misc/xmr-stak.nix b/nixos/modules/services/misc/xmr-stak.nix
new file mode 100644
index 00000000000..57f43936547
--- /dev/null
+++ b/nixos/modules/services/misc/xmr-stak.nix
@@ -0,0 +1,73 @@
+{ lib, config, pkgs, ... }:
+
+with lib;
+
+let
+
+  cfg = config.services.xmr-stak;
+
+  pkg = pkgs.xmr-stak.override {
+    inherit (cfg) openclSupport cudaSupport;
+  };
+
+  xmrConfArg = optionalString (cfg.configText != "") ("-c " +
+    pkgs.writeText "xmr-stak-config.txt" cfg.configText);
+
+in
+
+{
+  options = {
+    services.xmr-stak = {
+      enable = mkEnableOption "xmr-stak miner";
+      openclSupport = mkEnableOption "support for OpenCL (AMD/ATI graphics cards)";
+      cudaSupport = mkEnableOption "support for CUDA (NVidia graphics cards)";
+
+      extraArgs = mkOption {
+        type = types.listOf types.str;
+        default = [];
+        example = [ "--noCPU" "--currency monero" ];
+        description = "List of parameters to pass to xmr-stak.";
+      };
+
+      configText = mkOption {
+        type = types.lines;
+        default = "";
+        example = ''
+          "currency" : "monero",
+          "pool_list" :
+            [ { "pool_address" : "pool.supportxmr.com:5555",
+                "wallet_address" : "<long-hash>",
+                "pool_password" : "minername",
+                "pool_weight" : 1,
+              },
+            ],
+        '';
+        description = ''
+          Verbatim xmr-stak config.txt. If empty, the <literal>-c</literal>
+          parameter will not be added to the xmr-stak command.
+        '';
+      };
+    };
+  };
+
+  config = mkIf cfg.enable {
+    systemd.services.xmr-stak = {
+      wantedBy = [ "multi-user.target" ];
+      bindsTo = [ "network-online.target" ];
+      after = [ "network-online.target" ];
+      environment = mkIf cfg.cudaSupport {
+        LD_LIBRARY_PATH = "${pkgs.linuxPackages_latest.nvidia_x11}/lib";
+      };
+      script = ''
+        exec ${pkg}/bin/xmr-stak ${xmrConfArg} ${concatStringsSep " " cfg.extraArgs}
+      '';
+      serviceConfig = let rootRequired = cfg.openclSupport || cfg.cudaSupport; in {
+        # xmr-stak generates cpu and/or gpu configuration files
+        WorkingDirectory = "/tmp";
+        PrivateTmp = true;
+        DynamicUser = !rootRequired;
+        LimitMEMLOCK = toString (1024*1024);
+      };
+    };
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 37c11f27017..da625136fcb 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -15816,7 +15816,9 @@ with pkgs;
 
   monero = callPackage ../applications/misc/monero { };
 
-  xmr-stak = callPackage ../applications/misc/xmr-stak { };
+  xmr-stak = callPackage ../applications/misc/xmr-stak {
+    hwloc = hwloc-nox;
+  };
 
   monkeysAudio = callPackage ../applications/audio/monkeys-audio { };