From 8b2369eb423df81c9438287b0f125a9e490c87d0 Mon Sep 17 00:00:00 2001
From: seanyusa <seanyusa@gmail.com>
Date: Mon, 13 Dec 2021 17:08:44 -0600
Subject: [PATCH 1/3] checkIfYarnInstalled function

---
 create-turbo/src/yarn.ts | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100644 create-turbo/src/yarn.ts

diff --git a/create-turbo/src/yarn.ts b/create-turbo/src/yarn.ts
new file mode 100644
index 0000000000000..b65f0505f1b3b
--- /dev/null
+++ b/create-turbo/src/yarn.ts
@@ -0,0 +1,10 @@
+import { execSync } from "child_process";
+
+export function checkIfYarnInstalled(): boolean {
+  try {
+    execSync("yarnpkg --version", { stdio: "ignore" });
+    return true;
+  } catch (e) {
+    return false;
+  }
+}

From 6bb6cef6e4621db73c13817465833f53b8624fdf Mon Sep 17 00:00:00 2001
From: seanyusa <seanyusa@gmail.com>
Date: Mon, 13 Dec 2021 17:09:11 -0600
Subject: [PATCH 2/3] disable yarn option if not installed

---
 create-turbo/src/index.ts | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/create-turbo/src/index.ts b/create-turbo/src/index.ts
index 1ecf1c4f7004a..d47b2c8401f79 100644
--- a/create-turbo/src/index.ts
+++ b/create-turbo/src/index.ts
@@ -10,6 +10,7 @@ import gradient from "gradient-string";
 import checkForUpdate from "update-check";
 import chalk from "chalk";
 import cliPkgJson from "../package.json";
+import { checkIfYarnInstalled } from "./yarn";
 import { shouldUseYarn } from "./shouldUseYarn";
 import { tryGitInit } from "./git";
 
@@ -79,6 +80,7 @@ async function run() {
         ).dir
   );
 
+  const isYarnInstalled = checkIfYarnInstalled();
   let answers = await inquirer.prompt<{
     packageManager: "yarn" | "npm";
     install: boolean;
@@ -88,7 +90,11 @@ async function run() {
       type: "list",
       message: "Which package manager do you want to use?",
       choices: [
-        { name: "Yarn", value: "yarn" },
+        {
+          name: "Yarn",
+          value: "yarn",
+          disabled: !isYarnInstalled && "not installed",
+        },
         { name: "NPM", value: "npm" },
         // { name: "PNPM", value: "pnpm" },
       ],

From b03f04afe7214f0087e89ba51b97fa6a4aa7250e Mon Sep 17 00:00:00 2001
From: seanyusa <seanyusa@gmail.com>
Date: Tue, 14 Dec 2021 08:41:35 -0600
Subject: [PATCH 3/3] use shouldUseYarn to check if yarn is available

---
 create-turbo/src/index.ts |  3 +--
 create-turbo/src/yarn.ts  | 10 ----------
 2 files changed, 1 insertion(+), 12 deletions(-)
 delete mode 100644 create-turbo/src/yarn.ts

diff --git a/create-turbo/src/index.ts b/create-turbo/src/index.ts
index d47b2c8401f79..12e1bf6329d7e 100644
--- a/create-turbo/src/index.ts
+++ b/create-turbo/src/index.ts
@@ -10,7 +10,6 @@ import gradient from "gradient-string";
 import checkForUpdate from "update-check";
 import chalk from "chalk";
 import cliPkgJson from "../package.json";
-import { checkIfYarnInstalled } from "./yarn";
 import { shouldUseYarn } from "./shouldUseYarn";
 import { tryGitInit } from "./git";
 
@@ -80,7 +79,7 @@ async function run() {
         ).dir
   );
 
-  const isYarnInstalled = checkIfYarnInstalled();
+  const isYarnInstalled = shouldUseYarn();
   let answers = await inquirer.prompt<{
     packageManager: "yarn" | "npm";
     install: boolean;
diff --git a/create-turbo/src/yarn.ts b/create-turbo/src/yarn.ts
deleted file mode 100644
index b65f0505f1b3b..0000000000000
--- a/create-turbo/src/yarn.ts
+++ /dev/null
@@ -1,10 +0,0 @@
-import { execSync } from "child_process";
-
-export function checkIfYarnInstalled(): boolean {
-  try {
-    execSync("yarnpkg --version", { stdio: "ignore" });
-    return true;
-  } catch (e) {
-    return false;
-  }
-}