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