programs/distrobox: init

modules/nixos/default.nix

@@ -8,6 +8,7 @@ let
   modules = [
     ./programs/blender.nix
     ./programs/cardboard-wm.nix
+    ./programs/distrobox.nix
     ./programs/kiwmi.nix
     ./programs/pop-launcher.nix
     ./programs/wezterm.nix

modules/nixos/programs/distrobox.nix

@@ -0,0 +1,93 @@
+{ config, lib, pkgs, ... }:
+
+let
+  cfg = config.programs.distrobox;
+
+  toDistroboxConf = lib.generators.toKeyValue {
+    listsAsDuplicateKeys = false;
+    mkKeyValue = lib.generators.mkKeyValueDefault {
+      mkValueString = v:
+        if v == true then "1"
+        else if v == false then "0"
+        else if lib.isString v then ''"${v}"''
+        else if lib.isList v then lib.concatStringsSep " " v
+        else lib.generators.mkValueStringDefault { } v;
+    } "=";
+  };
+
+  distroboxConfFormat = { }: {
+    type = with lib.types;
+      let
+        valueType = oneOf [
+          bool
+          float
+          int
+          path
+          str
+          (listOf valueType)
+        ];
+      in
+      attrsOf valueType;
+
+    generate = name: value: pkgs.writeText name (toDistroboxConf value);
+  };
+
+  settingsFormat = distroboxConfFormat { };
+
+  settingsFile = settingsFormat.generate "distrobox-settings" cfg.settings;
+in
+{
+  options.programs.distrobox = {
+    enable = lib.mkEnableOption "Distrobox";
+    package = lib.mkPackageOption pkgs "distrobox" { };
+
+    settings = lib.mkOption {
+      type = settingsFormat.type;
+      default = { };
+      description = ''
+        Settings to be included for Distrobox.
+
+        ::: {.note}
+        You don't have surround the string values with double quotes since the
+        module will add them for you.
+        :::
+      '';
+      example = lib.literalExpression ''
+        {
+          container_additional_volumes = [
+            "/nix/store:/nix/store:r"
+            "/etc/profiles/per-user:/etc/profiles/per-user:r"
+          ];
+          container_image_default = "registry.opensuse.org/opensuse/distrobox-packaging:latest";
+          unshare_ipc = true;
+          unshare_netns = true;
+        }
+      '';
+    };
+
+    settingsFile = lib.mkOption {
+      type = lib.types.path;
+      default = settingsFile;
+      description = lib.mdDoc ''
+        The path to the settings file for Distrobox to be put at
+        {file}`/etc/distrobox/distrobox.conf`. By default, it will use a
+        Nix-generated file configured with
+        {option}`programs.distrobox.settings`.
+      '';
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    assertions = [{
+      assertion = config.virtualisation.podman.enable || config.virtualisation.docker.enable;
+      message = ''
+        Neither Podman nor Docker is enabled. You need to use enable either to
+        be able to use this program.
+      '';
+    }];
+
+    environment.systemPackages = [ cfg.package ];
+
+    environment.etc."distrobox/distrobox.conf".source = settingsFile;
+  };
+}