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nixos/services.tarsnap: remove with lib;
This commit is contained in:
Felix Buehler
Jörg Thalheim
parent
8442ed34ac
commit
e53c595a18
@ -1,41 +1,38 @@
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{ config, lib, options, pkgs, utils, ... }:
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with lib;
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let
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gcfg = config.services.tarsnap;
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opt = options.services.tarsnap;
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configFile = name: cfg: ''
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keyfile ${cfg.keyfile}
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${optionalString (cfg.cachedir != null) "cachedir ${cfg.cachedir}"}
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${optionalString cfg.nodump "nodump"}
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${optionalString cfg.printStats "print-stats"}
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${optionalString cfg.printStats "humanize-numbers"}
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${optionalString (cfg.checkpointBytes != null) ("checkpoint-bytes "+cfg.checkpointBytes)}
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${optionalString cfg.aggressiveNetworking "aggressive-networking"}
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${concatStringsSep "\n" (map (v: "exclude ${v}") cfg.excludes)}
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${concatStringsSep "\n" (map (v: "include ${v}") cfg.includes)}
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${optionalString cfg.lowmem "lowmem"}
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${optionalString cfg.verylowmem "verylowmem"}
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${optionalString (cfg.maxbw != null) "maxbw ${toString cfg.maxbw}"}
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${optionalString (cfg.maxbwRateUp != null) "maxbw-rate-up ${toString cfg.maxbwRateUp}"}
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${optionalString (cfg.maxbwRateDown != null) "maxbw-rate-down ${toString cfg.maxbwRateDown}"}
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${lib.optionalString (cfg.cachedir != null) "cachedir ${cfg.cachedir}"}
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${lib.optionalString cfg.nodump "nodump"}
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${lib.optionalString cfg.printStats "print-stats"}
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${lib.optionalString cfg.printStats "humanize-numbers"}
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${lib.optionalString (cfg.checkpointBytes != null) ("checkpoint-bytes "+cfg.checkpointBytes)}
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${lib.optionalString cfg.aggressiveNetworking "aggressive-networking"}
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${lib.concatStringsSep "\n" (map (v: "exclude ${v}") cfg.excludes)}
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${lib.concatStringsSep "\n" (map (v: "include ${v}") cfg.includes)}
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${lib.optionalString cfg.lowmem "lowmem"}
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${lib.optionalString cfg.verylowmem "verylowmem"}
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${lib.optionalString (cfg.maxbw != null) "maxbw ${toString cfg.maxbw}"}
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${lib.optionalString (cfg.maxbwRateUp != null) "maxbw-rate-up ${toString cfg.maxbwRateUp}"}
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${lib.optionalString (cfg.maxbwRateDown != null) "maxbw-rate-down ${toString cfg.maxbwRateDown}"}
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'';
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in
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{
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imports = [
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(mkRemovedOptionModule [ "services" "tarsnap" "cachedir" ] "Use services.tarsnap.archives.<name>.cachedir")
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(lib.mkRemovedOptionModule [ "services" "tarsnap" "cachedir" ] "Use services.tarsnap.archives.<name>.cachedir")
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];
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options = {
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services.tarsnap = {
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enable = mkEnableOption "periodic tarsnap backups";
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enable = lib.mkEnableOption "periodic tarsnap backups";
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package = mkPackageOption pkgs "tarsnap" { };
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package = lib.mkPackageOption pkgs "tarsnap" { };
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keyfile = mkOption {
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type = types.str;
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keyfile = lib.mkOption {
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type = lib.types.str;
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default = "/root/tarsnap.key";
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description = ''
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The keyfile which associates this machine with your tarsnap
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@ -61,14 +58,14 @@ in
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'';
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};
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archives = mkOption {
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type = types.attrsOf (types.submodule ({ config, options, ... }:
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archives = lib.mkOption {
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type = lib.types.attrsOf (lib.types.submodule ({ config, options, ... }:
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{
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options = {
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keyfile = mkOption {
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type = types.str;
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keyfile = lib.mkOption {
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type = lib.types.str;
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default = gcfg.keyfile;
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defaultText = literalExpression "config.${opt.keyfile}";
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defaultText = lib.literalExpression "config.${opt.keyfile}";
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description = ''
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Set a specific keyfile for this archive. This defaults to
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`"/root/tarsnap.key"` if left unspecified.
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@ -88,10 +85,10 @@ in
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'';
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};
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cachedir = mkOption {
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type = types.nullOr types.path;
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default = "/var/cache/tarsnap/${utils.escapeSystemdPath config.keyfile}";
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defaultText = literalExpression ''
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cachedir = lib.mkOption {
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type = lib.types.nullOr lib.types.path;
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default = "/var/cache/tarsnap/${utils.lib.escapeSystemdPath config.keyfile}";
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defaultText = lib.literalExpression ''
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"/var/cache/tarsnap/''${utils.escapeSystemdPath config.${options.keyfile}}"
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'';
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description = ''
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@ -106,16 +103,16 @@ in
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'';
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};
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nodump = mkOption {
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type = types.bool;
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nodump = lib.mkOption {
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type = lib.types.bool;
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default = true;
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description = ''
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Exclude files with the `nodump` flag.
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'';
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};
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printStats = mkOption {
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type = types.bool;
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printStats = lib.mkOption {
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type = lib.types.bool;
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default = true;
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description = ''
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Print global archive statistics upon completion.
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@ -124,8 +121,8 @@ in
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'';
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};
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checkpointBytes = mkOption {
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type = types.nullOr types.str;
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checkpointBytes = lib.mkOption {
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type = lib.types.nullOr lib.types.str;
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default = "1GB";
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description = ''
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Create a checkpoint every `checkpointBytes`
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@ -138,8 +135,8 @@ in
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'';
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};
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period = mkOption {
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type = types.str;
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period = lib.mkOption {
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type = lib.types.str;
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default = "01:15";
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example = "hourly";
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description = ''
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@ -150,8 +147,8 @@ in
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'';
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};
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aggressiveNetworking = mkOption {
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type = types.bool;
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aggressiveNetworking = lib.mkOption {
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type = lib.types.bool;
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default = false;
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description = ''
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Upload data over multiple TCP connections, potentially
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@ -162,22 +159,22 @@ in
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'';
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};
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directories = mkOption {
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type = types.listOf types.path;
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directories = lib.mkOption {
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type = lib.types.listOf lib.types.path;
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default = [];
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description = "List of filesystem paths to archive.";
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};
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excludes = mkOption {
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type = types.listOf types.str;
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excludes = lib.mkOption {
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type = lib.types.listOf lib.types.str;
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default = [];
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description = ''
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Exclude files and directories matching these patterns.
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'';
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};
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includes = mkOption {
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type = types.listOf types.str;
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includes = lib.mkOption {
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type = lib.types.listOf lib.types.str;
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default = [];
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description = ''
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Include only files and directories matching these
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@ -187,8 +184,8 @@ in
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'';
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};
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lowmem = mkOption {
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type = types.bool;
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lowmem = lib.mkOption {
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type = lib.types.bool;
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default = false;
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description = ''
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Reduce memory consumption by not caching small files.
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@ -198,8 +195,8 @@ in
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'';
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};
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verylowmem = mkOption {
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type = types.bool;
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verylowmem = lib.mkOption {
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type = lib.types.bool;
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default = false;
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description = ''
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Reduce memory consumption by a factor of 2 beyond what
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@ -208,8 +205,8 @@ in
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'';
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};
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maxbw = mkOption {
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type = types.nullOr types.int;
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maxbw = lib.mkOption {
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type = lib.types.nullOr lib.types.int;
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default = null;
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description = ''
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Abort archival if upstream bandwidth usage in bytes
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@ -217,40 +214,40 @@ in
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'';
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};
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maxbwRateUp = mkOption {
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type = types.nullOr types.int;
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maxbwRateUp = lib.mkOption {
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type = lib.types.nullOr lib.types.int;
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default = null;
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example = literalExpression "25 * 1000";
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example = lib.literalExpression "25 * 1000";
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description = ''
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Upload bandwidth rate limit in bytes.
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'';
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};
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maxbwRateDown = mkOption {
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type = types.nullOr types.int;
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maxbwRateDown = lib.mkOption {
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type = lib.types.nullOr lib.types.int;
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default = null;
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example = literalExpression "50 * 1000";
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example = lib.literalExpression "50 * 1000";
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description = ''
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Download bandwidth rate limit in bytes.
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'';
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};
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verbose = mkOption {
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type = types.bool;
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verbose = lib.mkOption {
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type = lib.types.bool;
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default = false;
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description = ''
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Whether to produce verbose logging output.
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'';
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};
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explicitSymlinks = mkOption {
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type = types.bool;
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explicitSymlinks = lib.mkOption {
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type = lib.types.bool;
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default = false;
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description = ''
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Whether to follow symlinks specified as archives.
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'';
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};
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followSymlinks = mkOption {
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type = types.bool;
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followSymlinks = lib.mkOption {
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type = lib.types.bool;
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default = false;
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description = ''
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Whether to follow all symlinks in archive trees.
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@ -262,7 +259,7 @@ in
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default = {};
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example = literalExpression ''
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example = lib.literalExpression ''
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{
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nixos =
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{ directories = [ "/home" "/root/ssl" ];
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@ -292,19 +289,19 @@ in
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};
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};
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config = mkIf gcfg.enable {
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config = lib.mkIf gcfg.enable {
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assertions =
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(mapAttrsToList (name: cfg:
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(lib.mapAttrsToList (name: cfg:
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{ assertion = cfg.directories != [];
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message = "Must specify paths for tarsnap to back up";
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}) gcfg.archives) ++
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(mapAttrsToList (name: cfg:
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(lib.mapAttrsToList (name: cfg:
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{ assertion = !(cfg.lowmem && cfg.verylowmem);
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message = "You cannot set both lowmem and verylowmem";
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}) gcfg.archives);
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systemd.services =
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(mapAttrs' (name: cfg: nameValuePair "tarsnap-${name}" {
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(lib.mapAttrs' (name: cfg: lib.nameValuePair "tarsnap-${name}" {
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description = "Tarsnap archive '${name}'";
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requires = [ "network-online.target" ];
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after = [ "network-online.target" ];
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@ -322,11 +319,11 @@ in
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script = let
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tarsnap = ''${lib.getExe gcfg.package} --configfile "/etc/tarsnap/${name}.conf"'';
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run = ''${tarsnap} -c -f "${name}-$(date +"%Y%m%d%H%M%S")" \
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${optionalString cfg.verbose "-v"} \
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${optionalString cfg.explicitSymlinks "-H"} \
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${optionalString cfg.followSymlinks "-L"} \
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${concatStringsSep " " cfg.directories}'';
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cachedir = escapeShellArg cfg.cachedir;
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${lib.optionalString cfg.verbose "-v"} \
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${lib.optionalString cfg.explicitSymlinks "-H"} \
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${lib.optionalString cfg.followSymlinks "-L"} \
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${lib.concatStringsSep " " cfg.directories}'';
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cachedir = lib.escapeShellArg cfg.cachedir;
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in if (cfg.cachedir != null) then ''
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mkdir -p ${cachedir}
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chmod 0700 ${cachedir}
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@ -353,7 +350,7 @@ in
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};
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}) gcfg.archives) //
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(mapAttrs' (name: cfg: nameValuePair "tarsnap-restore-${name}"{
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(lib.mapAttrs' (name: cfg: lib.nameValuePair "tarsnap-restore-${name}"{
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description = "Tarsnap restore '${name}'";
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requires = [ "network-online.target" ];
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@ -362,8 +359,8 @@ in
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script = let
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tarsnap = ''${lib.getExe gcfg.package} --configfile "/etc/tarsnap/${name}.conf"'';
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lastArchive = "$(${tarsnap} --list-archives | sort | tail -1)";
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run = ''${tarsnap} -x -f "${lastArchive}" ${optionalString cfg.verbose "-v"}'';
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cachedir = escapeShellArg cfg.cachedir;
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run = ''${tarsnap} -x -f "${lastArchive}" ${lib.optionalString cfg.verbose "-v"}'';
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cachedir = lib.escapeShellArg cfg.cachedir;
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in if (cfg.cachedir != null) then ''
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mkdir -p ${cachedir}
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@ -393,14 +390,14 @@ in
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# Note: the timer must be Persistent=true, so that systemd will start it even
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# if e.g. your laptop was asleep while the latest interval occurred.
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systemd.timers = mapAttrs' (name: cfg: nameValuePair "tarsnap-${name}"
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systemd.timers = lib.mapAttrs' (name: cfg: lib.nameValuePair "tarsnap-${name}"
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{ timerConfig.OnCalendar = cfg.period;
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timerConfig.Persistent = "true";
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wantedBy = [ "timers.target" ];
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}) gcfg.archives;
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environment.etc =
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mapAttrs' (name: cfg: nameValuePair "tarsnap/${name}.conf"
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lib.mapAttrs' (name: cfg: lib.nameValuePair "tarsnap/${name}.conf"
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{ text = configFile name cfg;
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}) gcfg.archives;
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