modularize cinny and ente-auth, add package ente-auth-web

The previous was more of a workaround not fitting in the spirit of
nixos, this fixes this and makes proper modules out of them. Sadly
ente-web-auth has to be build with a env var and therefore can't be
configured before properly.

packages/ente-web-auth/default.nix

@@ -0,0 +1,73 @@
+{
+  lib,
+  stdenv,
+  fetchFromGitHub,
+  fetchYarnDeps,
+  nodejs,
+  yarnConfigHook,
+  yarnBuildHook,
+  nix-update-script,
+  extraBuildEnv ? { },
+}:
+
+stdenv.mkDerivation (finalAttrs: {
+  pname = "ente-web-auth";
+  version = "4.3.6";
+
+  src = fetchFromGitHub {
+    owner = "ente-io";
+    repo = "ente";
+    sparseCheckout = [ "auth" ];
+    tag = "auth-v${finalAttrs.version}";
+    fetchSubmodules = true;
+    hash = "sha256-/dWnaVll/kaKHTJ5gH18BR6JG5E6pF7/j+SgvE66b7M=";
+  };
+  sourceRoot = "${finalAttrs.src.name}/web";
+
+  offlineCache = fetchYarnDeps {
+    yarnLock = "${finalAttrs.src}/web/yarn.lock";
+    hash = "sha256-Wu0/YHqkqzrmA5hpVk0CX/W1wJUh8uZSjABuc+DPxMA=";
+  };
+
+  nativeBuildInputs = [
+    yarnConfigHook
+    yarnBuildHook
+    nodejs
+  ];
+
+  # See: https://github.com/ente-io/ente/blob/main/web/apps/photos/.env
+  env = extraBuildEnv;
+
+  buildPhase = ''
+    export NEXT_PUBLIC_ENTE_ENDPOINT=https://ente-api.monapona.dev
+    yarn build:auth
+  '';
+
+  installPhase = ''
+    runHook preInstall
+
+    cp -r apps/auth/out $out
+
+    runHook postInstall
+  '';
+
+  passthru.updateScript = nix-update-script {
+    extraArgs = [
+      "--version-regex"
+      "auth-v(.*)"
+    ];
+  };
+
+  meta = {
+    description = "Web client for Ente Auth";
+    homepage = "https://ente.io/";
+    changelog = "https://github.com/ente-io/ente/releases";
+    license = lib.licenses.agpl3Only;
+    maintainers = with lib.maintainers; [
+      surfaceflinger
+      pinpox
+      spaenny
+    ];
+    platforms = lib.platforms.all;
+  };
+})