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types gpt: hash label if it's > 36 characters
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@ -55,7 +55,15 @@ in
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};
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};
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label = lib.mkOption {
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label = lib.mkOption {
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type = lib.types.str;
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type = lib.types.str;
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default = "${config._parent.type}-${config._parent.name}-${partition.config.name}";
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default = let
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# 72 bytes is the maximum length of a GPT partition name
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# the labels seem to be in UTF-16, so 2 bytes per character
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limit = 36;
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label = "${config._parent.type}-${config._parent.name}-${partition.config.name}";
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in if (lib.stringLength label) > limit then
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builtins.substring 0 limit (builtins.hashString "sha256" label)
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else
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label;
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};
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};
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size = lib.mkOption {
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size = lib.mkOption {
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type = lib.types.either (lib.types.enum [ "100%" ]) (lib.types.strMatching "[0-9]+[KMGTP]?");
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type = lib.types.either (lib.types.enum [ "100%" ]) (lib.types.strMatching "[0-9]+[KMGTP]?");
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