Cook the pasta according to package directions, omitting salt and fat.
Add haricots verts during the final 2 minutes of cooking.
Drain and rinse pasta mixture under cold water; drain well.
Place the pasta mixture, pistachios, 1 tablespoon thyme, and 1 tablespoon lemon rind in a large bowl; toss gently to combine.
Combine remaining 1 tablespoon thyme, remaining 1 tablespoon lemon rind, shallots, Champagne or white wine vinegar, and garlic in a small bowl, stirring well with a whisk. Gradually add olive oil, stirring constantly with a whisk.
Add salt and black pepper; stir with a whisk.
Drizzle over pasta mixture, and toss gently to coat. Top each serving with Parmesan cheese.