公式にこんなの書いてるけど。

👉 Set up an environment | Kotlin 
❯ kdoctor
[v] System
OS: macOS (12.6)
CPU: Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz
[v] Java
Java (openjdk version "11.0.13" 2021-10-19)
Location: /Users/maochanz/Library/Application Support/JetBrains/Toolbox/apps/AndroidStudio/ch-0/213.7172.25.2113.9014738/Android Studio.app/Contents/jre/Contents/Home/bin/java
JAVA_HOME=/Users/maochanz/Library/Application Support/JetBrains/Toolbox/apps/AndroidStudio/ch-0/213.7172.25.2113.9014738/Android Studio.app/Contents/jre/Contents/Home
* Note that, by default, Xcode uses Java environment returned by /usr/libexec/java_home:
/usr/local/Cellar/openjdk@11/11.0.16.1_1/libexec/openjdk.jdk/Contents/Home
It does not match current JAVA_HOME environment variable:
/Users/maochanz/Library/Application Support/JetBrains/Toolbox/apps/AndroidStudio/ch-0/213.7172.25.2113.9014738/Android Studio.app/Contents/jre/Contents/Home
Set JAVA_HOME in XCode -> Preferences -> Locations -> Custom Paths to
/Users/maochanz/Library/Application Support/JetBrains/Toolbox/apps/AndroidStudio/ch-0/213.7172.25.2113.9014738/Android Studio.app/Contents/jre/Contents/Home
* Note that, by default, Android Studio uses bundled JDK for Gradle tasks execution.
Gradle JDK can be configured in Android Studio Preferences under Build, Execution, Deployment -> Build Tools -> Gradle section
[x] Android Studio
* Android Studio (2021.3)
Location: /Users/maochanz/Library/Application Support/JetBrains/Toolbox/apps/AndroidStudio/ch-0/213.7172.25.2113.9014738/Android Studio.app
Bundled Java: openjdk 11.0.13 2021-10-19
Kotlin Plugin: 213-1.7.10-release-for-android-studio-AS6777.52
Kotlin Multiplatform Mobile Plugin: not installed
Install Kotlin Multiplatform Mobile plugin - https://plugins.jetbrains.com/plugin/14936-kotlin-multiplatform-mobile
[v] Xcode
Xcode (14.0.1)
Location: /Applications/Xcode.app
[x] Cocoapods
ruby (ruby 2.7.6p219 (2022-04-12 revision c9c2245c0a) [x86_64-darwin21])
ruby gems (3.3.11)
cocoapods (1.11.3)
* cocoapods-generate plugin not found
Get cocoapods-generate from https://github.com/square/cocoapods-generate#installation
Failures: 2
KDoctor has diagnosed one or more problems while checking your environment.
Please check the output for problem description and possible solutions.
Failures: 2
ですけど!!
👉 Kotlin/kdoctor: Environment analysis tool 
■ JAVA_HOME
Homebrew で OpenJDK11 最新を入れておく。
👉 Mac に Homebrew で OpenJDK11 を インストール する 
export JAVA_HOME=$(/usr/libexec/java_home -v11)
export PATH="$JAVA_HOME/bin:$PATH"
❯ java -version
openjdk version "11.0.16.1" 2022-08-12
OpenJDK Runtime Environment Homebrew (build 11.0.16.1+0)
OpenJDK 64-Bit Server VM Homebrew (build 11.0.16.1+0, mixed mode)
❯ javac -version
javac 11.0.16.1
❯ which java
/usr/local/Cellar/openjdk@11/11.0.16.1_1/libexec/openjdk.jdk/Contents/Home/bin/java
❯ which javac
/usr/local/Cellar/openjdk@11/11.0.16.1_1/libexec/openjdk.jdk/Contents/Home/bin/javac
❯ ./gradlew --version
------------------------------------------------------------
Gradle 7.5.1
------------------------------------------------------------
Build time: 2022-08-05 21:17:56 UTC
Revision: d1daa0cbf1a0103000b71484e1dbfe096e095918
Kotlin: 1.6.21
Groovy: 3.0.10
Ant: Apache Ant(TM) version 1.10.11 compiled on July 10 2021
JVM: 11.0.16.1 (Homebrew 11.0.16.1+0)
OS: Mac OS X 12.6 x86_64
AndroidStudio 内の設定で選択肢から指定するだけでいい。

👉 AndroidStudio 利用する Java (JDK) の選択・設定の方法 
■ Kotlin Multiplatform Mobile Plugin
KMM プラグインをインストールしても、ずっと
Kotlin Multiplatform Mobile Plugin: not installed
のままです。
どうやら、JetBrains ToolBox で Android Studio を使ってる場合の現象のようです。
KDoctor が KMM プラグインを見つけられないようです。

👉 Android Studio: Cannot detect installed Kotlin Multiplatform Mobile Plugin · Issue #25 · Kotlin/kdoctor 
■ cocoapods-generate
~/AndroidStudioProjects/KMM main
❯ gem 'cocoapods-generate'
ERROR: While executing gem ... (Gem::UnknownCommandError)
Unknown command cocoapods-generate
~/AndroidStudioProjects/KMM main
❯ gem install cocoapods-generate
ERROR: While executing gem ... (Errno::EACCES)
Permission denied @ dir_s_mkdir - /usr/local/lib/ruby/gems/2.7.0/gems/cocoapods-disable-podfile-validations-0.1.1
❯ pod env --verbose
CDN: trunk Relative path: CocoaPods-version.yml exists! Returning local because checking is only performed in repo update
### Stack
```
CocoaPods : 1.11.3
Ruby : ruby 2.7.6p219 (2022-04-12 revision c9c2245c0a) [x86_64-darwin21]
RubyGems : 3.3.11
Host : macOS 12.6 (21G115)
Xcode : 14.0.1 (14A400)
Git : git version 2.33.0
Ruby lib dir : /usr/local/Cellar/[email protected]/2.7.6_1/lib
Repositories : trunk - CDN - https://cdn.cocoapods.org/
```
### Installation Source
```
Executable Path: /usr/local/bin/pod
```
### Plugins
```
cocoapods-deintegrate : 1.0.5
cocoapods-plugins : 1.0.0
cocoapods-search : 1.0.1
cocoapods-trunk : 1.6.0
cocoapods-try : 1.2.0
```
Kotlin 1.7.0 以降は、
sudo gem install cocoapods
だけでいいんじゃね?

👉 CocoaPods overview and setup | Kotlin 
■ まとめ
GitHub リポジトリを見てる限り、

最終更新日時、
古すぎん?
生きてないのかな、KDoctor。
■ バージョン 0.0.5 公開 : 2022-12-04 追記
0.0.5
が公開されています。
正常に診断できるようになってます!!

--verbose
で実行すると状態の詳細が分かりやすいです。
❯ kdoctor -h
Usage: kdoctor options_list
Options:
--version -> print KDoctor version
--verbose, -v -> print extended information
--debug -> debug mode
--help, -h -> Usage info

👉 Kotlin/kdoctor: Environment analysis tool 
👉 CocoaPods/CocoaPods: The Cocoa Dependency Manager. 
👉 square/cocoapods-generate: A CocoaPods plugin that allows you to easily generate a workspace from a podspec. 
👉 テキストアニメーションで Progress Indicator 