fix: exclude tailwind package when installing integration (#13106)

* fix: exclude tailwind package when installing integration

* Update .changeset/green-sloths-switch.md

---------

Co-authored-by: Florian Lefebvre <contact@florian-lefebvre.dev>

Author: ascorbic

.changeset/green-sloths-switch.md

@@ -0,0 +1,5 @@
+---
+'astro': patch
+---
+
+Fixes a bug that caused peer dependency errors when running `astro add tailwind`

packages/astro/src/cli/add/index.ts

@@ -40,6 +40,7 @@ interface AddOptions {
 interface IntegrationInfo {
 	id: string;
 	packageName: string;
+	integrationName: string;
 	dependencies: [name: string, version: string][];
 	type: 'integration' | 'adapter';
 }
@@ -283,7 +284,7 @@ export async function add(names: string[], { flags }: AddOptions) {
 						'SKIP_FORMAT',
 						`\n  ${magenta(
 							`Check our deployment docs for ${bold(
-								integration.packageName,
+								integration.integrationName,
 							)} to update your "adapter" config.`,
 						)}`,
 					);
@@ -349,7 +350,9 @@ export async function add(names: string[], { flags }: AddOptions) {
 		case UpdateResult.failure:
 		case UpdateResult.updated:
 		case undefined: {
-			const list = integrations.map((integration) => `  - ${integration.packageName}`).join('\n');
+			const list = integrations
+				.map((integration) => `  - ${integration.integrationName}`)
+				.join('\n');
 			logger.info(
 				'SKIP_FORMAT',
 				msg.success(
@@ -618,8 +621,7 @@ async function convertIntegrationsToInstallSpecifiers(
 	integrations: IntegrationInfo[],
 ): Promise<string[]> {
 	const ranges: Record<string, string> = {};
-	for (let { packageName, dependencies } of integrations) {
-		ranges[packageName] = '*';
+	for (let { dependencies } of integrations) {
 		for (const [name, range] of dependencies) {
 			ranges[name] = range;
 		}
@@ -790,7 +792,7 @@ async function validateIntegrations(integrations: string[]): Promise<Integration
 
 				const resolvedScope = pkgType === 'first-party' ? '@astrojs' : scope;
 				const packageName = `${resolvedScope ? `${resolvedScope}/` : ''}${name}`;
-
+				let integrationName = packageName;
 				let dependencies: IntegrationInfo['dependencies'] = [
 					[pkgJson['name'], `^${pkgJson['version']}`],
 				];
@@ -823,13 +825,19 @@ async function validateIntegrations(integrations: string[]): Promise<Integration
 				}
 
 				if (integration === 'tailwind') {
+					integrationName = 'tailwind';
 					dependencies = [
 						['@tailwindcss/vite', '^4.0.0'],
 						['tailwindcss', '^4.0.0'],
 					];
 				}
-
-				return { id: integration, packageName, dependencies, type: integrationType };
+				return {
+					id: integration,
+					packageName,
+					dependencies,
+					type: integrationType,
+					integrationName,
+				};
 			}),
 		);
 		spinner.success();