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boinc service: use an FHS environment

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While BOINC itself is open source, many of the project applications
it runs are not. Additionally, these project applications are
checksummed before they are run, so they can't be patched. This
means we can't make the project applications find required binaries/libraries
on a NixOS system. The solution is therefore to make said binaries
and libraries appear in the expected locations, by wrapping BOINC
in an FHS-compatible environment [1].

An `extraEnvPackages` is also added to allow more packages to
be added into this environment. The documentation for this option
describes some practical use cases for it.

[1] https://nixos.org/nixpkgs/manual/#sec-fhs-environments

Version 2: fixed Docbook list formatting, minor rewording

Version 3: rebase onto master (9c048f4fb6)

Version 4: fix usage of targetPkgs argument to buildFHSUserEnv
This commit is contained in:
Kier Davis 2017-10-28 22:29:53 +01:00
parent 9c048f4fb6
commit 9fad70f1de
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1 changed files with 45 additions and 1 deletions
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46
nixos/modules/services/computing/boinc/client.nix
View file

@ -6,6 +6,13 @@ let
cfg = config.services.boinc;
allowRemoteGuiRpcFlag = optionalString cfg.allowRemoteGuiRpc "--allow_remote_gui_rpc";
fhsEnv = pkgs.buildFHSUserEnv {
name = "boinc-fhs-env";
targetPkgs = pkgs': [ cfg.package ] ++ cfg.extraEnvPackages;
runScript = "/bin/boinc_client";
};
fhsEnvExecutable = "${fhsEnv}/bin/${fhsEnv.name}";
in
{
options.services.boinc = {
@ -49,6 +56,43 @@ in
See also: <link xlink:href="http://boinc.berkeley.edu/wiki/Controlling_BOINC_remotely#Remote_access"/>
'';
};
extraEnvPackages = mkOption {
type = types.listOf types.package;
default = [];
example = "[ pkgs.virtualbox ]";
description = ''
Additional packages to make available in the environment in which
BOINC will run. Common choices are:
<variablelist>
<varlistentry>
<term><varname>pkgs.virtualbox</varname></term>
<listitem><para>
The VirtualBox virtual machine framework. Required by some BOINC
projects, such as ATLAS@home.
</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>pkgs.ocl-icd</varname></term>
<listitem><para>
OpenCL infrastructure library. Required by BOINC projects that
use OpenCL, in addition to a device-specific OpenCL driver.
</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>pkgs.linuxPackages.nvidia_x11</varname></term>
<listitem><para>
Provides CUDA libraries. Required by BOINC projects that use
CUDA. Note that this requires an NVIDIA graphics device to be
present on the system.
</para><para>
Also provides OpenCL drivers for NVIDIA GPUs;
<varname>pkgs.ocl-icd</varname> is also needed in this case.
</para></listitem>
</varlistentry>
</variablelist>
'';
};
};
config = mkIf cfg.enable {
@ -70,7 +114,7 @@ in
chown boinc ${cfg.dataDir}
'';
script = ''
${cfg.package}/bin/boinc_client --dir ${cfg.dataDir} --redirectio ${allowRemoteGuiRpcFlag}
${fhsEnvExecutable} --dir ${cfg.dataDir} --redirectio ${allowRemoteGuiRpcFlag}
'';
serviceConfig = {
PermissionsStartOnly = true; # preStart must be run as root