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swap: support swapDevices.*.priority option
This just forwards to the underlying NixOS option and expands the mount script to exhibit the same behavior.
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@ -29,6 +29,7 @@
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content = {
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type = "swap";
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randomEncryption = true;
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priority = 100; # prefer to encrypt as long as we have space for it
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};
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};
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plainSwap = {
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@ -28,6 +28,15 @@
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default = [ ];
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description = "Extra arguments";
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};
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priority = lib.mkOption {
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type = lib.types.nullOr lib.types.int;
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default = null;
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description = lib.mdDoc ''
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Specify the priority of the swap device. Priority is a value between 0 and 32767.
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Higher numbers indicate higher priority.
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null lets the kernel choose a priority, which will show up as a negative value.
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'';
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};
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randomEncryption = lib.mkOption {
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type = lib.types.bool;
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default = false;
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@ -69,7 +78,10 @@
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lib.optionalString (config.discardPolicy != null)
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"--discard${lib.optionalString (config.discardPolicy != "both")
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"=${config.discardPolicy}"
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}"} ${config.device}
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}"} ${
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lib.optionalString (config.priority != null)
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"--priority=${toString config.priority}"
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} ${config.device}
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fi
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'';
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};
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@ -80,7 +92,7 @@
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default = [{
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swapDevices = [{
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device = config.device;
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inherit (config) discardPolicy randomEncryption;
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inherit (config) discardPolicy priority randomEncryption;
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}];
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boot.resumeDevice = lib.mkIf config.resumeDevice config.device;
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}];
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