home-assistant-minimalist: add required lovelace modules

pkgs/lovelace-state-switch/package.nix

@@ -0,0 +1,37 @@
+{
+  lib,
+  buildNpmPackage,
+  fetchFromGitHub,
+}:
+
+buildNpmPackage rec {
+  pname = "lovelace-state-switch";
+  version = "1.9.5";
+
+  src = fetchFromGitHub {
+    owner = "thomasloven";
+    repo = "lovelace-state-switch";
+    rev = version;
+    hash = "sha256-jrybRchpZWmqauKKv4i4ht/CAdMNykOuPjlDnZh4KPw=";
+  };
+
+  npmDepsHash = "sha256-p+XPG6nB9wDmaWrmSc0dmJdKBdIivbM337Gf4j6xqBg=";
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir $out
+    install -m0644 state-switch.js $out
+
+    runHook postInstall
+  '';
+
+  makeCacheWritable = true;
+
+  meta = with lib; {
+    description = "Dynamically replace lovelace cards depending on occasion";
+    homepage = "https://github.com/thomasloven/lovelace-state-switch";
+    license = licenses.mit;
+    maintainers = [ ];
+  };
+}