yarn create fails when specifying a package version

[Bnaya]

Do you want to request a feature or report a bug?
bug

What is the current behavior?
Running:
yarn create react-app@next --help
fails with an error:

success Installed "create-react-app@2.0.5-next.c662dfb0" with binaries:
      - create-react-app
/bin/sh: /usr/local/bin/create-react-app@next: No such file or directory

What is the expected behavior?
should run /usr/local/bin/create-react-app and not /usr/local/bin/create-react-app@next

Please mention your node.js, yarn and operating system version.
yarn 1.10.1, mac os Mojave, node v8.11.3

Note that with npx you need to supply the version using additional flag:

npx create-react-app test-app-typescript --typescript --scripts-version=@next

[edmorley]

This is affecting us too, using yarn 1.12.3, Node.js 11.0.0, Windows 10 x64:

$ yarn create @neutrinojs/project@next foo
yarn create v1.12.3
[1/4] Resolving packages...
[2/4] Fetching packages...
[3/4] Linking dependencies...
[4/4] Building fresh packages...
success Installed "@neutrinojs/create-project@9.0.0-beta.1" with binaries:
      - create-project
'C:\Users\Ed\AppData\Local\Yarn\bin\create-project@next' is not recognized
as an internal or external command, operable program or batch file.
error Command failed.
Exit code: 1
Command: C:\Users\Ed\AppData\Local\Yarn\bin\create-project@next
Arguments: foo
Directory: C:\Users\Ed\src
Output:

It looks like the tag would need to be handled here:

yarn/src/cli/commands/create.js

Lines 19 to 38 in 77f04c3

	export function parsePackageName(str: string): Object {
	if (str.charAt(0) === '/') {
	throw new Error(`Name should not start with "/", got "${str}"`);
	}
	if (str.charAt(0) === '.') {
	throw new Error(`Name should not start with ".", got "${str}"`);
	}
	const parts = str.split('/');
	const isScoped = str.charAt(0) === '@';
	if (isScoped && parts[0] === '@') {
	throw new Error(`Scope should not be empty, got "${str}"`);
	}
	const scope = isScoped ? parts[0] : '';
	const name = parts[isScoped ? 1 : 0] || '';
	const path = parts.slice(isScoped ? 2 : 1).join('/');
	const fullName = [scope, name].filter(Boolean).join('/');
	const full = [scope, name, path].filter(Boolean).join('/');
	return {fullName, name, scope, path, full};
	}