60 lines
1.4 KiB
Nix
60 lines
1.4 KiB
Nix
{
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config,
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pkgs,
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lib,
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...
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}:
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let
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cfg = config.clan.core.machine;
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facts = config.clan.core.facts.services.machineId.public or { };
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in
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{
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options.clan.core.machine = {
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machineId = lib.mkOption {
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type = lib.types.nullOr lib.types.str;
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default = null;
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description = "A machine id based on the UUID v4 format";
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};
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generateMachineId = lib.mkOption {
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type = lib.types.bool;
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default = true;
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description = "Generate a new machine id";
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};
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};
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config = lib.mkMerge [
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(lib.mkIf (cfg.machineId != null) {
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assertions = [
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{
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assertion = lib.stringLength cfg.machineId == 32;
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message = "machineId must be exactly 32 characters long.";
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}
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];
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boot.kernelParams = [
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''systemd.machine_id=${cfg.machineId}''
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];
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})
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(lib.mkIf ((facts.machineId.value or null) != null) {
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clan.core.machine.machineId = lib.mkDefault facts.machineId.value;
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})
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(lib.mkIf cfg.generateMachineId {
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clan.core.facts.services.machineId = {
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public.machineId = { };
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generator.path = [
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pkgs.coreutils
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pkgs.bash
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];
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generator.script = ''
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uuid=$(bash ${./uuid4.sh})
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# Remove the hyphens from the UUID
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uuid_no_hyphens=$(echo -n "$uuid" | tr -d '-')
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echo -n "$uuid_no_hyphens" > "$facts/machineId"
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'';
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};
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})
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];
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}
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