WIP bcachefs

lib/types/bcachefs.nix

@@ -0,0 +1,70 @@
+{ config, options, lib, diskoLib, parent, device, ... }:
+{
+  options = {
+    type = lib.mkOption {
+      type = lib.types.enum [ "bcachefs" ];
+      internal = true;
+      description = "Type";
+    };
+    device = lib.mkOption {
+      type = lib.types.str;
+      description = "Device";
+      default = device;
+    };
+
+    name = lib.mkOption {
+      type = lib.types.str;
+      description = "Name";
+    };
+
+    label = lib.mkOption {
+      type = lib.types.str;
+      description = "Label";
+    };
+
+    formatOptions = lib.mkOption {
+      type = lib.types.listOf lib.types.str;
+      default = [ "defaults" ];
+      description = "Format options";
+    };
+
+    _parent = lib.mkOption {
+      internal = true;
+      default = parent;
+    };
+    _meta = lib.mkOption {
+      internal = true;
+      readOnly = true;
+      type = lib.types.functionTo diskoLib.jsonType;
+      default = dev: {
+        deviceDependencies.bcachefspool.${config.name} = [ dev ];
+      };
+      description = "Metadata";
+    };
+    _create = diskoLib.mkCreateOption {
+      inherit config options;
+      default = ''
+        echo ${config.device} >>"$disko_devices_dir"/bcachefs_${config.name}/devices
+        echo ${config.label} >>"$disko_devices_dir"/bcachefs_${config.name}/labels
+        echo ${lib.concatStringsSep " " config.formatOptions} >>"$disko_devices_dir"/bcachefs_${config.name}/format_options
+      '';
+    };
+    _mount = diskoLib.mkMountOption {
+      inherit config options;
+      default = { };
+    };
+    _config = lib.mkOption {
+      internal = true;
+      readOnly = true;
+      default = [ ];
+      description = "NixOS configuration";
+    };
+    _pkgs = lib.mkOption {
+      internal = true;
+      readOnly = true;
+      type = lib.types.functionTo (lib.types.listOf lib.types.package);
+      default = pkgs: [ pkgs.bcachefs-tools ];
+      description = "Packages";
+    };
+  };
+}

lib/types/bcachefspool.nix

@@ -0,0 +1,90 @@
+{ config, options, lib, diskoLib, ... }:
+{
+  options = {
+    name = lib.mkOption {
+      type = lib.types.str;
+      default = config._module.args.name;
+      description = "Name";
+    };
+
+    type = lib.mkOption {
+      type = lib.types.enum [ "bcachefspool" ];
+      default = "bcachefspool";
+      internal = true;
+      description = "Type";
+    };
+
+    formatOptions = lib.mkOption {
+      type = lib.types.listOf lib.types.str;
+      default = [ "defaults" ];
+      description = "Format options";
+    };
+
+    mountOptions = lib.mkOption {
+      type = lib.types.listOf lib.types.str;
+      default = [ "defaults" ];
+      description = "Mount options";
+    };
+
+    mountpoint = lib.mkOption {
+      type = lib.types.nullOr diskoLib.optionTypes.absolute-pathname;
+      default = null;
+      description = "A path to mount the bcachefs filesystem to.";
+    };
+
+    _meta = lib.mkOption {
+      internal = true;
+      readOnly = true;
+      type = diskoLib.jsonType;
+      default =
+        lib.optionalAttrs (config.content != null) (config.content._meta [ "bcachefspool" config.name ]);
+      description = "Metadata";
+    };
+
+    _create = diskoLib.mkCreateOption {
+      inherit config options;
+      default = ''
+        readarray -t bcachefs_devices < <(cat "$disko_devices_dir"/bcachefs_${config.name}/devices)
+        readarray -t bcachefs_labels < <(cat "$disko_devices_dir"/bcachefs_${config.name}/labels)
+        readarray -t bcachefs_format_options < <(cat "$disko_devices_dir"/bcachefs_${config.name}/format_options)
+
+        device_configs=()
+
+        for ((i=0; i<''${#bcachefs_devices[@]}; i++)); do
+            device=''${bcachefs_devices[$i]}
+            label=''${bcachefs_labels[$i]}
+            format_options=''${bcachefs_format_options[$i]}
+            device_configs+=("--label=$label $format_options $device")
+        done
+
+        bcachefs format --fs_label=${config.name} ${lib.concatStringsSep " " config.formatOptions} \
+          $(IFS=' \' ; echo "''${device_configs[*]}")
+      '';
+    };
+
+    _mount = diskoLib.mkMountOption {
+      inherit config options;
+      default = "TODO";
+    };
+
+    _config = lib.mkOption {
+      internal = true;
+      readOnly = true;
+      default = lib.optional (config.options.mountpoint or "" != "none") {
+          fileSystems.${config.mountpoint} = {
+            device = "${lib.concatStringsSep ":" config.formatOptions}";
+            fsType = "bcachefs";
+            options = config.mountOptions;
+          };
+        };
+      description = "NixOS configuration";
+    };
+    _pkgs = lib.mkOption {
+      internal = true;
+      readOnly = true;
+      type = lib.types.functionTo (lib.types.listOf lib.types.package);
+      default = pkgs: [];
+      description = "Packages";
+    };
+  };
+}