commit fa3d7ea77ba1b4dca52b97dfe90755ce7e6edc80 · pyrox.dev/nixpkgs

+27 -29

nixos/modules/services/hardware/freefall.nix

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       with lib;

     

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       {

     

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         ###### interface

     

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         options = with types; {

     

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           services.freefall = {

     

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             enable = mkOption {

     

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               default = false;

     

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               description = ''

     

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                 Whether to protect HP/Dell laptop hard drives (not SSDs) in free fall.

     

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               '';

     

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               type = bool;

     

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             };

     

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             devices = mkOption {

     

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               default = [ "/dev/sda" ];

     

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               description = ''

     

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                 Device paths to all internal spinning hard drives.

     

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               '';

     

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               type = listOf string;

     

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             };

     

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           };

     

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         };

     

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       -
         ###### implementation

     

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         config = let

     

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           cfg = config.services.freefall;

     

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           mkService = dev:

     

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             assert dev != "";

     
···

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               description = "Free-fall protection for ${dev}";

     

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               after = [ "${dev'}.device" ];

     

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               wantedBy = [ "${dev'}.device" ];

     

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               path = [ pkgs.freefall ];

     

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               unitConfig = {

     

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                 DefaultDependencies = false;

     

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               };

     

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               serviceConfig = {

     

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                 ExecStart = "${pkgs.freefall}/bin/freefall ${dev}";

     

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                 Restart = "on-failure";

     

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                 Type = "forking";

     

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               };

     
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         in mkIf cfg.enable {

     

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           environment.systemPackages = [ pkgs.freefall ];

     

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           systemd.services = listToAttrs (map mkService cfg.devices);

     

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         };

     

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···

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       with lib;

     

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       let

     

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         cfg = config.services.freefall;

     

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       in {

     

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         options.services.freefall = {

     

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           enable = mkOption {

     

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             type = types.bool;

     

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             default = false;

     

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             description = ''

     

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               Whether to protect HP/Dell laptop hard drives (not SSDs) in free fall.

     

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             '';

     

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           };

     

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           package = mkOption {

     

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             type = types.package;

     

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             default = pkgs.freefall;

     

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             description = ''

     

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               freefall derivation to use.

     

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             '';

     

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           };

     

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           devices = mkOption {

     

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             type = types.listOf types.string;

     

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             default = [ "/dev/sda" ];

     

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             description = ''

     

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               Device paths to all internal spinning hard drives.

     

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             '';

     

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           };

     

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         };

     

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         config = let

     

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           mkService = dev:

     

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             assert dev != "";

     
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               description = "Free-fall protection for ${dev}";

     

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               after = [ "${dev'}.device" ];

     

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               wantedBy = [ "${dev'}.device" ];

     

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               serviceConfig = {

     

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                 ExecStart = "${cfg.package}/bin/freefall ${dev}";

     

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                 Restart = "on-failure";

     

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                 Type = "forking";

     

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               };

     
···

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         in mkIf cfg.enable {

     

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           environment.systemPackages = [ cfg.package ];

     

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           systemd.services = builtins.listToAttrs (map mkService cfg.devices);

     

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         };

     

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