clan-config: init

- nixos-modules to jsonschema converter
- nix unit testing via adisbladis/nix-unit
- clan config: configuration CLI for nixos-modules

pkgs/clan-cli/tests/config/example-interface.nix

@@ -0,0 +1,46 @@
+/*
+  An example nixos module declaring an interface.
+*/
+{ lib, ... }: {
+  options = {
+    name = lib.mkOption {
+      type = lib.types.str;
+      default = "John Doe";
+      description = "The name of the user";
+    };
+    age = lib.mkOption {
+      type = lib.types.int;
+      default = 42;
+      description = "The age of the user";
+    };
+    isAdmin = lib.mkOption {
+      type = lib.types.bool;
+      default = false;
+      description = "Is the user an admin?";
+    };
+    # a submodule option
+    services = lib.mkOption {
+      type = lib.types.submodule {
+        options.opt = lib.mkOption {
+          type = lib.types.str;
+          default = "foo";
+          description = "A submodule option";
+        };
+      };
+    };
+    userIds = lib.mkOption {
+      type = lib.types.attrsOf lib.types.int;
+      description = "Some attributes";
+      default = {
+        horst = 1;
+        peter = 2;
+        albrecht = 3;
+      };
+    };
+    kernelModules = lib.mkOption {
+      type = lib.types.listOf lib.types.str;
+      default = [ "nvme" "xhci_pci" "ahci" ];
+      description = "A list of enabled kernel modules";
+    };
+  };
+}