fix: detect cli@v2 alpha (#421)

Author: amrbashir

.changes/deps-tauri-cli-alpha.md

@@ -0,0 +1,7 @@
+---
+"create-tauri-app": "patch"
+"create-tauri-app-js": "patch"
+---
+
+Print info to install `tauri-cli@2.0.0-alpha` if it wasn't detected and `--alpha` flag was passed.
+

packages/cli/src/deps.rs

@@ -3,7 +3,7 @@ use template::Template;
 use crate::colors::*;
 use crate::internal::template;
 use crate::package_manager::PackageManager;
-use std::process::Command;
+use std::process::{Command, Output};
 
 fn is_rustc_installed() -> bool {
     Command::new("rustc")
@@ -34,15 +34,19 @@ fn is_trunk_installed() -> bool {
         .map(|o| o.status.success())
         .unwrap_or(false)
 }
-fn is_tauri_cli_installed() -> bool {
+fn is_appropriate_tauri_cli_installed(alpha: bool) -> bool {
+    let check = |o: Output| match o.status.success() {
+        true if alpha => String::from_utf8_lossy(&o.stderr)
+            .split_once(' ')
+            .map(|(_, v)| v.starts_with('2'))
+            .unwrap_or(false),
+        s => s,
+    };
     Command::new("cargo")
-        .arg("tauri")
-        .arg("-V")
+        .args(["tauri", "-V"])
         .output()
-        .map(|o| {
-            let s = String::from_utf8_lossy(&o.stderr);
-            !s.starts_with("error:")
-        })
+        .map(check)
+        .or_else(|_| Command::new("tauri").arg("-V").output().map(check))
         .unwrap_or(false)
 }
 fn is_wasm32_installed() -> bool {
@@ -172,11 +176,11 @@ pub fn print_missing_deps(pkg_manager: PackageManager, template: Template, alpha
         (
             "Tauri CLI",
             if alpha {
-                format!("Run `{BLUE}{BOLD}cargo install tauri-cli --version ^2.0.0-alpha{RESET}`")
+                format!("Run `{BLUE}{BOLD}cargo install tauri-cli --version '^2.0.0-alpha'{RESET}`")
             } else {
                 format!("Run `{BLUE}{BOLD}cargo install tauri-cli{RESET}`")
             },
-            &is_tauri_cli_installed,
+            &|| is_appropriate_tauri_cli_installed(alpha),
             pkg_manager.is_node() || !template.needs_tauri_cli(),
         ),
         (