We learnt how to build a macOS app entirely from scratch using Cocoa. We learnt how to use Xcode IB to design our UI elements. We learnt how to create our custom view class. We learnt how to design delegate pattern. We learnt how to install external library with Carthage. For macOS apps, distribute an Apple-notarized build to testers before you distribute the app through the App Store. To learn more, see Notarizing macOS Software Before Distribution. Publish on the App Store. After beta testing your final build, submit it to App Review, then offer it on the App Store. Xcode is the Mac app that you use to build apps for iOS, macOS, tvOS and watchOS. You use Swift programming, and the many tools inside Xcode, to build applications for iPhone, iPad, Mac, Apple TV.

Use an on-demand cloud Mac server to develop iOS, macOS, watchOS, and tvOS apps in Swift or Objective-C BUILD Combine the power of cloud Mac servers with Xcode's new indexing engine to speed up the building process by up to 50x.
Running the above command displays that it's signed with my 3rd Party Mac App Developer certificate. I have tried looking for a way to export the Xcode project out from Unity app, so I can attempt to build and sign it with Xcode, but after searching the Web, I realized that Unity doesn't have support for exporting the Xcode project for macOS app yet (it can do the same for iOS).

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System Version: macOS 10.15.5 (19F101)
Kernel Version: Darwin 19.5.0
System Integrity Protection: Enabled
Image Version: 20200707.3

Macos Xcode Command Line Tools

Installed Software

Language and Runtime

Java 1.7: (Zulu 7.38.0.11-CA-macosx) (build 1.7.0_262-b10)
Java 1.8: (AdoptOpenJDK)(build 1.8.0_252-b09) (default)
Java 11: AdoptOpenJDK (build 11.0.7+10)
Java 12: AdoptOpenJDK (build 12.0.2+10)
Java 13: AdoptOpenJDK (build 13.0.2+8)
Java 14: AdoptOpenJDK (build 14.0.1+7)
Rust 1.44.1
Clang/LLVM 10.0.0
gcc-8 (Homebrew GCC 8.4.0_1) 8.4.0
gcc-9 (Homebrew GCC 9.3.0) 9.3.0
GNU Fortran (Homebrew GCC 8.4.0_1) 8.4.0
GNU Fortran (Homebrew GCC 9.3.0) 9.3.0
Node.js v12.18.2
NVM 0.35.3
NVM - Cached node versions: v6.17.1 v8.17.0 v10.21.0 v12.18.2 v13.14.0 v14.5.0
PowerShell 7.0.2
Python 2.7.17
Python 3.7.8
Ruby 2.6.6p146
.NET SDK 2.1.300 2.1.301 2.1.302 2.1.401 2.1.402 2.1.403 2.1.500 2.1.502 2.1.503 2.1.504 2.1.505 2.1.506 2.1.507 2.1.602 2.1.603 2.1.604 2.1.607 2.1.700 2.1.701 2.1.801 2.1.802 2.1.803 2.1.804 2.1.805 2.1.806 2.1.807 3.0.100 3.0.101 3.0.102 3.0.103 3.1.100 3.1.101 3.1.200 3.1.201 3.1.300 3.1.301
Go 1.14.4
PHP 7.4.7
julia 1.4.2

Package Management

Rustup 1.22.0
Vcpkg 2020.06.15
Bundler version 2.1.4
Carthage 0.35.0
CocoaPods 1.9.3
Homebrew 2.4.4
NPM 6.14.5
Yarn 1.22.4
NuGet 5.6.0.6489
Pip 19.3.1 (python 2.7)
Pip 20.0.2 (python 3.7)
Miniconda 4.8.3
RubyGems 3.1.4

Project Management

Apache Maven 3.6.3
Gradle 6.5.1
Apache Ant(TM) 1.10.8

Utilities

Curl 7.71.1
Git: 2.27.0
Git LFS: 2.11.0
GitHub CLI: 0.10.1
Hub CLI: 2.14.2
GNU Wget 1.20.3
Subversion (SVN) 1.14.0
Packer 1.6.0
GNU parallel 20200622
OpenSSL 1.0.2t 10 Sep 2019 (/usr/local/opt/openssl -> /usr/local/Cellar/openssl/1.0.2t)
jq 1.6
gpg (GnuPG) 2.2.20
psql (PostgreSQL) 12.3
PostgreSQL 12.3
aria2 1.35.0
azcopy 10.4.3
zstd 1.4.5
bazel 3.3.1
bazelisk v1.5.0
helm v3.2.4+g0ad800e
virtualbox 6.1.10r138449
mongo v4.2.8
mongod v4.2.8
Vagrant 2.2.9
7-Zip 16.02

Tools

Fastlane 2.151.1
Cmake 3.17.3
App Center CLI 2.6.1
Azure CLI 2.8.0
AWS CLI 2.0.29
AWS SAM CLI 0.53.0
Aliyun CLI 3.0.50
GHCup v0.1.5-p2
GHC 8.10.1
Cabal 3.2.0.0
Stack 2.3.1

Browsers

Safari 13.1.1 (15609.2.9.1.2)
SafariDriver 13.1.1 (15609.2.9.1.2)
Google Chrome 83.0.4103.116
ChromeDriver 83.0.4103.39
Microsoft Edge 83.0.478.58
MSEdgeDriver 83.0.478.61
Mozilla Firefox 78.0.1
geckodriver 0.26.0

Cached Tools

Ruby

2.4.10
2.5.8
2.6.6
2.7.1

Python

2.7.18
3.5.9
3.6.11
3.7.8
3.8.3

PyPy

2.7.13 [PyPy 7.3.1]
3.6.9 [PyPy 7.3.1]

Node.js

8.17.0
10.21.0
12.18.2
14.5.0

Go

1.11.13
1.12.17
1.13.12
1.14.4

Xamarin

Visual Studio for Mac

8.6.5.23

Mono

6.10.0.104
6.8.0.123
6.6.0.166
6.4.0.208

Xamarin.iOS

13.18.2.1
13.16.0.13
13.14.1.39
13.10.0.21
13.8.3.0
13.6.0.12
13.4.0.2
13.2.0.47

Xamarin.Mac

6.18.2.1
6.16.0.13
6.14.1.39
6.10.0.21
6.8.3.0
6.6.0.12
6.4.0.2
6.2.0.47

Xamarin.Android

10.3.1
10.2.0
10.1.3
10.0.6

Unit Test Framework

NUnit 3.6.1

Xcode

Version	Build	Path
12.0 (beta)	12A6163b	/Applications/Xcode_12_beta.app
11.6 (beta)	11N700h	/Applications/Xcode_11.6_beta.app
11.5 (default)	11E608c	/Applications/Xcode_11.5.app
11.4.1	11E503a	/Applications/Xcode_11.4.1.app
11.4	11E146	/Applications/Xcode_11.4.app
11.3.1	11C505	/Applications/Xcode_11.3.1.app
11.2.1	11B500	/Applications/Xcode_11.2.1.app
11.1	11A1027	/Applications/Xcode_11.1.app
11.0	11A420a	/Applications/Xcode_11.app
10.3	10G8	/Applications/Xcode_10.3.app

Xcode Support Tools

Nomad CLI 3.1.4
Nomad CLI IPA ipa 0.14.3
xcpretty 0.3.0
xctool 0.3.7
xcversion 2.6.6

Installed SDKs

SDK	SDK Name	Xcode Version
macOS 10.14	macosx10.14	10.3
macOS 10.15	macosx10.15	11.0, 11.1, 11.2.1, 11.3.1, 11.4, 11.4.1, 11.5, 11.6
macOS 10.16	macosx10.16	12.0
iOS 12.4	iphoneos12.4	10.3
iOS 13.0	iphoneos13.0	11.0
iOS 13.1	iphoneos13.1	11.1
iOS 13.2	iphoneos13.2	11.2.1, 11.3.1
iOS 13.4	iphoneos13.4	11.4, 11.4.1
iOS 13.5	iphoneos13.5	11.5
iOS 13.6	iphoneos13.6	11.6
iOS 14.0	iphoneos14.0	12.0
Simulator - iOS 12.4	iphonesimulator12.4	10.3
Simulator - iOS 13.0	iphonesimulator13.0	11.0
Simulator - iOS 13.1	iphonesimulator13.1	11.1
Simulator - iOS 13.2	iphonesimulator13.2	11.2.1, 11.3.1
Simulator - iOS 13.4	iphonesimulator13.4	11.4, 11.4.1
Simulator - iOS 13.5	iphonesimulator13.5	11.5
Simulator - iOS 13.6	iphonesimulator13.6	11.6
Simulator - iOS 14.0	iphonesimulator14.0	12.0
tvOS 12.4	appletvos12.4	10.3
tvOS 13.0	appletvos13.0	11.0, 11.1
tvOS 13.2	appletvos13.2	11.2.1, 11.3.1
tvOS 13.4	appletvos13.4	11.4, 11.4.1, 11.5, 11.6