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nixpkgs/modules/services/hardware/hal.nix
Eelco Dolstra 5ebdee3577 * Continued refactoring the tree: moved most Upstart jobs (namely
those that run daemons) to modules/services.  This probably broke
  some things since there are a few relative paths in modules
  (e.g. imports of system/ids.nix).
* Moved some PAM modules out of etc/pam.d to the directories of NixOS
  modules that use them.

svn path=/nixos/branches/modular-nixos/; revision=15717
2009-05-24 23:13:23 +00:00

120 lines
2.4 KiB
Nix

# HAL daemon.
{pkgs, config, ...}:
###### interface
let
inherit (pkgs.lib) mkOption;
options = {
services = {
hal = {
enable = mkOption {
default = true;
description = "
Whether to start the HAL daemon.
";
};
extraFdi = mkOption {
default = [];
example = [ "/nix/store/.../fdi" ];
description = "
Extend HAL daemon configuration with additionnal paths.
";
};
};
};
};
in
###### implementation
let
cfg = config.services.hal;
inherit (pkgs.lib) mkIf;
inherit (pkgs) hal;
user = {
name = "haldaemon";
uid = (import ../../../system/ids.nix).uids.haldaemon;
description = "HAL daemon user";
};
group = {
name = "haldaemon";
gid = (import ../../../system/ids.nix).gids.haldaemon;
};
fdi =
if cfg.extraFdi == [] then
hal + "/share/hal/fdi"
else
pkgs.buildEnv {
name = "hal-fdi";
pathsToLink = [ "/preprobe" "/information" "/policy" ];
paths = [ (hal + "/share/hal/fdi") ] ++ cfg.extraFdi;
};
job = {
name = "hal";
job = ''
description "HAL daemon"
# !!! TODO: make sure that HAL starts after acpid,
# otherwise hald-addon-acpi will grab /proc/acpi/event.
start on ${if config.powerManagement.enable then "acpid" else "dbus"}
stop on shutdown
start script
mkdir -m 0755 -p /var/cache/hald
rm -f /var/cache/hald/fdi-cache
end script
# HACK ? These environment variables manipulated inside
# 'src'/hald/mmap_cache.c are used for testing the daemon
env HAL_FDI_SOURCE_PREPROBE=${fdi}/preprobe
env HAL_FDI_SOURCE_INFORMATION=${fdi}/information
env HAL_FDI_SOURCE_POLICY=${fdi}/policy
respawn ${hal}/sbin/hald --daemon=no
'';
};
in
mkIf cfg.enable {
require = [
# ../upstart-jobs/default.nix # config.services.extraJobs
# ../system/user.nix # users.*
# ../upstart-jobs/udev.nix # services.udev.*
# ../upstart-jobs/dbus.nix # services.dbus.*
# ? # config.environment.extraPackages
options
];
environment = {
extraPackages = [hal];
};
users = {
extraUsers = [user];
extraGroups = [group];
};
services = {
extraJobs = [job];
udev = {
addUdevPkgs = [hal];
};
dbus = {
enable = true;
services = [hal];
};
};
}