My crappy patch.

cluster/kubernetes/resource/fluxhelmrelease.go

@@ -129,6 +129,18 @@ func interpret_stringmap(m map[string]interface{}) (image.Ref, ImageSetter, bool
 				}
 			}
 		}
+	case map[interface{}]interface{}:
+		if imgRepo, ok := img["repository"].(string); ok {
+			if imgTag, ok := img["tag"].(string); ok {
+				imgRef, err := image.ParseRef(imgRepo + ":" + imgTag)
+				if err == nil {
+					return imgRef, func(ref image.Ref) {
+						img["repository"] = ref.Name.String()
+						img["tag"] = ref.Tag
+					}, true
+				}
+			}
+		}
 	}
 	return image.Ref{}, nil, false
 }

cluster/kubernetes/resource/fluxhelmrelease_test.go

@@ -298,3 +298,70 @@ spec:
 		t.Errorf("expected container name %q, got %q", expectedContainer, containers[0].Name)
 	}
 }
+
+func TestParseNamedImageObjectFormatFlat(t *testing.T) {
+	expectedContainer := ReleaseContainerName
+	expectedImageName := "bitnami/mariadb"
+	expectedImageTag := "10.1.30-r1"
+	expectedImage := expectedImageName + ":" + expectedImageTag
+
+	doc := `---
+apiVersion: helm.integrations.flux.weave.works/v1alpha2
+kind: FluxHelmRelease
+metadata:
+  name: mariadb
+  namespace: maria
+  labels:
+    chart: mariadb
+spec:
+  chartGitPath: mariadb
+  values:
+    image:
+      repository: ` + expectedImageName + `
+      tag: ` + expectedImageTag + `
+    persistence:
+      enabled: false
+`
+
+	resources, err := ParseMultidoc([]byte(doc), "test")
+	if err != nil {
+		t.Fatal(err)
+	}
+	res, ok := resources["maria:fluxhelmrelease/mariadb"]
+	if !ok {
+		t.Fatalf("expected resource not found; instead got %#v", resources)
+	}
+	fhr, ok := res.(resource.Workload)
+	if !ok {
+		t.Fatalf("expected resource to be a Workload, instead got %#v", res)
+	}
+
+	containers := fhr.Containers()
+	if len(containers) != 1 {
+		t.Fatalf("expected 1 container; got %#v", containers)
+	}
+	image := containers[0].Image.String()
+	if image != expectedImage {
+		t.Errorf("expected container image %q, got %q", expectedImage, image)
+	}
+	if containers[0].Name != expectedContainer {
+		t.Errorf("expected container name %q, got %q", expectedContainer, containers[0].Name)
+	}
+
+	newImage := containers[0].Image.WithNewTag("some-other-tag")
+	if err := fhr.SetContainerImage(expectedContainer, newImage); err != nil {
+		t.Error(err)
+	}
+
+	containers = fhr.Containers()
+	if len(containers) != 1 {
+		t.Fatalf("expected 1 container; got %#v", containers)
+	}
+	image = containers[0].Image.String()
+	if image != newImage.String() {
+		t.Errorf("expected container image %q, got %q", newImage.String(), image)
+	}
+	if containers[0].Name != expectedContainer {
+		t.Errorf("expected container name %q, got %q", expectedContainer, containers[0].Name)
+	}
+}