fixup tests

modules/helm.nix

@@ -0,0 +1,118 @@
+# helm defines kubenix module with options for using helm charts
+# with kubenix
+
+{ config, lib, pkgs, helm, ... }:
+
+with lib;
+let
+  cfg = config.kubernetes.helm;
+
+  globalConfig = config;
+
+  recursiveAttrs = mkOptionType {
+    name = "recursive-attrs";
+    description = "recursive attribute set";
+    check = isAttrs;
+    merge = loc: foldl' (res: def: recursiveUpdate res def.value) { };
+  };
+
+  parseApiVersion = apiVersion:
+    let
+      splitted = splitString "/" apiVersion;
+    in
+    {
+      group = if length splitted == 1 then "core" else head splitted;
+      version = last splitted;
+    };
+
+in
+{
+  imports = [ ./k8s.nix ];
+
+  options.kubernetes.helm = {
+    instances = mkOption {
+      description = "Attribute set of helm instances";
+      type = types.attrsOf (types.submodule ({ config, name, ... }: {
+        options = {
+          name = mkOption {
+            description = "Helm release name";
+            type = types.str;
+            default = name;
+          };
+
+          chart = mkOption {
+            description = "Helm chart to use";
+            type = types.package;
+          };
+
+          namespace = mkOption {
+            description = "Namespace to install helm chart to";
+            type = types.nullOr types.str;
+            default = null;
+          };
+
+          values = mkOption {
+            description = "Values to pass to chart";
+            type = recursiveAttrs;
+            default = { };
+          };
+
+          kubeVersion = mkOption {
+            description = "Kubernetes version to build chart for";
+            type = types.str;
+            default = globalConfig.kubernetes.version;
+          };
+
+          overrides = mkOption {
+            description = "Overrides to apply to all chart resources";
+            type = types.listOf types.unspecified;
+            default = [ ];
+          };
+
+          overrideNamespace = mkOption {
+            description = "Whether to apply namespace override";
+            type = types.bool;
+            default = true;
+          };
+
+          objects = mkOption {
+            description = "Generated kubernetes objects";
+            type = types.listOf types.attrs;
+            default = [ ];
+          };
+        };
+
+        config.overrides = mkIf (config.overrideNamespace && config.namespace != null) [{
+          metadata.namespace = config.namespace;
+        }];
+
+        config.objects = importJSON (helm.chart2json {
+          inherit (config) chart name namespace values kubeVersion;
+        });
+      }));
+      default = { };
+    };
+  };
+
+  config = {
+    # expose helm helper methods as module argument
+    _module.args.helm = import ../lib/helm { inherit pkgs; };
+
+    kubernetes.api.resources = mkMerge (flatten (mapAttrsToList
+      (_: instance:
+        map
+          (object:
+            let
+              apiVersion = parseApiVersion object.apiVersion;
+              name = object.metadata.name;
+            in
+            {
+              "${apiVersion.group}"."${apiVersion.version}".${object.kind}."${name}" = mkMerge ([
+                object
+              ] ++ instance.overrides);
+            })
+          instance.objects
+      )
+      cfg.instances));
+  };
+}