86 lines
2.2 KiB
Nix
86 lines
2.2 KiB
Nix
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{
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config,
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lib,
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pkgs,
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modulesPath,
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...
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}:
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let
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cfg = config.debug.closure;
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inherit (lib.types) package;
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inherit (config.system.build) toplevel;
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ps = pkgs.callPackage ../pkgs { };
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inherit (ps) writeErofsLayers;
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emptySystem = import (pkgs.path + "/nixos/lib/eval-config.nix") {
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modules = [
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(modulesPath + "/profiles/minimal.nix")
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{
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system.stateVersion = config.system.stateVersion;
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fileSystems."/".fsType = "tmpfs";
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boot.loader.grub.enable = false;
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networking.hostName = "base";
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networking.nftables.enable = true;
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networking.useNetworkd = true;
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systemd.network.enable = true;
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}
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];
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};
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in
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{
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options.debug.closure = {
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info = lib.mkOption {
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type = package;
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description = "closureInfo { rootPaths = [ toplevel ]; }";
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};
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write = lib.mkOption {
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type = package;
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description = "writeClosure [ toplevel ]";
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};
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extraLayers = lib.mkOption {
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type = lib.types.listOf package;
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description = "Roots from which to generate `erofs.layers`";
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defaultText = ''
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[
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(nixosSystem { modules = [ ]; }).config.system.build.toplevel
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# implicitly appended: config.system.build.toplevel
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]
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'';
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};
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erofs.layers = lib.mkOption {
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type = lib.types.listOf package;
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description = "writeErofs [ ... ]";
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readOnly = true;
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};
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erofs.list = lib.mkOption {
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type = package;
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description = "writeClosure [ (writeErofs [ ... ])... ]";
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};
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};
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config.debug.closure = {
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info = pkgs.closureInfo { rootPaths = [ toplevel ]; };
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write = pkgs.writeClosure [ toplevel ];
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erofs.list =
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pkgs.runCommand "layers"
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{
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__structuredAttrs = true;
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inherit (cfg.erofs) layers;
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}
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''
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printf "%s\n" "''${layers[@]}" > "$out"
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'';
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extraLayers = lib.mkMerge [
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(lib.mkBefore [ emptySystem.config.system.build.toplevel ])
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# (lib.mkAfter [config.system.build.toplevel])
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];
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erofs.layers = writeErofsLayers {
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layers = cfg.extraLayers ++ [
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toplevel
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];
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labelUpper = config.networking.hostName;
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};
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};
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}
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