fix(create-astro): use CLI version tag to determine astro version

.changeset/selfish-bulldogs-jog.md

@@ -0,0 +1,5 @@
+---
+'create-astro': patch
+---
+
+Fixes an issue where installing Astro beta using `create-astro` displays the wrong Astro version in the installation messages.

packages/create-astro/src/actions/context.ts

@@ -33,7 +33,24 @@ export interface Context {
 	tasks: Task[];
 }
 
+function getPackageTag(packageSpecifier: string | undefined): string | undefined {
+	switch (packageSpecifier) {
+		case 'alpha':
+		case 'beta':
+		case 'rc':
+			return packageSpecifier;
+		// Will fallback to latest
+		case undefined:
+		default:
+			return undefined;
+	}
+}
+
 export async function getContext(argv: string[]): Promise<Context> {
+	const packageSpecifier = argv
+		.find((argItem) => /^(astro|create-astro)@/.exec(argItem))
+		?.split('@')[1];
+
 	const flags = arg(
 		{
 			'--template': String,
@@ -93,7 +110,12 @@ export async function getContext(argv: string[]): Promise<Context> {
 		prompt,
 		packageManager,
 		username: getName(),
-		version: getVersion(packageManager, 'astro', process.env.ASTRO_VERSION),
+		version: getVersion(
+			packageManager,
+			'astro',
+			getPackageTag(packageSpecifier),
+			process.env.ASTRO_VERSION,
+		),
 		skipHouston,
 		fancy,
 		add,

packages/create-astro/src/messages.ts

@@ -51,10 +51,10 @@ export const getName = () =>
 		});
 	});
 
-export const getVersion = (packageManager: string, packageName: string, fallback = '') =>
+export const getVersion = (packageManager: string, packageName: string, packageTag = 'latest', fallback = '') =>
 	new Promise<string>(async (resolve) => {
 		let registry = await getRegistry(packageManager);
-		const { version } = await fetch(`${registry}/${packageName}/latest`, {
+		const { version } = await fetch(`${registry}/${packageName}/${packageTag}`, {
 			redirect: 'follow',
 		})
 			.then((res) => res.json())