老款MacBook系統(tǒng)Monterey(MacOS 12)由于brew停止了從上游下載cocoapods提示不支持os12系統(tǒng)，無(wú)法安裝最新版cocoapods，本文講述了另一種方法來(lái)更新cocoapods
原文鏈接：http://www.kovli.com/2024/12/18/old-macos-install-cocoapods/
作者:Kovli
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嘗試過(guò)的方法：
sudo gem install cocoapods
sudo gem install cocoapods -pre
gem install cocoapods --user-install
sudo gem update cocoapods --version 1.16.2
均無(wú)法成功安裝，系統(tǒng)ruby是2.6
后來(lái)嘗試用brew安裝
brew install ruby
提示報(bào)錯(cuò)如下：
Error: Your Command Line Tools are too outdated.
Update them from Software Update in System Preferences.
If that doesn't show you any updates, run:
sudo rm -rf /Library/Developer/CommandLineTools
sudo xcode-select --install
Alternatively, manually download them from:
https://developer.apple.com/download/all/.
You should download the Command Line Tools for Xcode 14.2.
經(jīng)過(guò)檢查是安裝了命令行工具14.2的，也重復(fù)安裝一遍還是報(bào)錯(cuò)同樣錯(cuò)誤，判斷是版本太低不支持，但是xCode14.2已經(jīng)是OS12系統(tǒng)的最新版本了，受限于系統(tǒng)無(wú)法升級(jí)。
于是想著升級(jí)下當(dāng)前系統(tǒng)所支持的最高ruby版本2.7.2
brew install ruby@2.7
報(bào)錯(cuò)如下，
Error: ruby@2.7 has been disabled because it is not supported upstream! It was disabled on 2024-06-15.
嘗試brew安裝ruby2.6
brew install ruby@2.6
報(bào)錯(cuò)如下
No available formula with the name "ruby@2.6". Did you mean ruby@2.7, ruby@3.2, ruby@3.1 or ruby@3.0?
也就是說(shuō)brew只支持安裝ruby3以上
于是安裝3.0版本試試
brew install ruby@3.0
結(jié)果報(bào)錯(cuò)如下
Error: You are using macOS 12.
We (and Apple) do not provide support for this old version.
說(shuō)明brew已經(jīng)不支持macOS12系統(tǒng)安裝ruby3了，到這里可以看出，brew在macOS12系統(tǒng)已經(jīng)安裝不了ruby了
于是考慮用rvm
curl -L get.rvm.io | bash -s stable
順利安裝了rvm最新版
rvm 1.29.12 (latest) by Michal Papis, Piotr Kuczynski, Wayne E. Seguin [https://rvm.io]
先嘗試安裝ruby 3以上的，結(jié)果沒(méi)成功，經(jīng)過(guò)查詢，最高支持安裝2.7.2
rvm install 2.7.2
提示報(bào)錯(cuò)
Error running '__rvm_make -j8',
經(jīng)檢查問(wèn)題出在openssl
卸載openssl
brew uninstall --ignore-dependencies openssl@3
重裝低版本
rm -rf /usr/local/etc/openssl@1.1
brew reinstall openssl@1.1
提示報(bào)錯(cuò)
Error: openssl@1.1 has been disabled because it is not supported upstream! It was disabled on 2024-10-24.
此時(shí)有種換電腦的沖動(dòng)了，但是不想讓老外的計(jì)謀得逞，繼續(xù)努力兼容!
brew edit openssl@1.1
會(huì)提示編輯如下文件
Editing /usr/local/opt/openssl@1.1/.brew/openssl@1.1.rb
通過(guò)編輯器或者vim編輯，注釋下面這行
deprecate! date: "2023-11-11", because: :unsupported
# deprecate! date: "2023-11-11", because: :unsupported
然后執(zhí)行：
HOMEBREW_NO_INSTALL_FROM_API=1 brew install openssl@1.1
HOMEBREW_NO_INSTALL_FROM_API=1 這個(gè)環(huán)境變量的作用就是告訴brew 不使用api中的formula而是使用你自己編輯后的， 這樣就可以正常安裝被brew禁止disable的軟件包了。
上面的執(zhí)行完再次安裝2.7.2就可以成功
rvm install 2.7.2
設(shè)為默認(rèn)ruby
rvm use 2.7.2 --default
更新了ruby從系統(tǒng)默認(rèn)的2.6到rvm安裝的2.7.2后再次嘗試安裝cocoapods
sudo gem install cocoapods -v 1.16.2 -n /usr/local/bin
提示報(bào)錯(cuò)
ERROR: Error installing cocoapods:
The last version of securerandom (>= 0.3) to support your Ruby & RubyGems was 0.3.2. Try installing it with `gem install securerandom -v 0.3.2` and then running the current command again
securerandom requires Ruby version >= 3.1.0. The current ruby version is 2.7.2.137.
按照指引繼續(xù)安裝securerandom
sudo gem install -n /usr/local/bin securerandom -v 0.3.2
然后重試
sudo gem install cocoapods -v 1.16.2 -n /usr/local/bin
提示報(bào)錯(cuò)
ERROR: Error installing cocoapods:
The last version of activesupport (>= 5.0, < 8) to support your Ruby & RubyGems was 7.1.5.1. Try installing it with `gem install activesupport -v 7.1.5.1` and then running the current command again
activesupport requires Ruby version >= 3.1.0. The current ruby version is 2.7.2.137.
按照指引開(kāi)始安裝activesupport
sudo gem install -n /usr/local/bin activesupport -v 7.1.5.1
繼續(xù)重試
sudo gem install -n /usr/local/bin cocoapods -v 1.16.2
這次終于沒(méi)報(bào)錯(cuò)了，安裝成功，檢查版本
~ pod --version
1.16.2
成功更新到新版cocoapods
tips:
1、RVM官方網(wǎng)站
https://rvm.io/workflow/examples#rvm-list
2、ruby可安裝的版本信息
rvm list known
3、cocoapods所有版本
https://rubygems.org/gems/cocoapods/versions
4、cocoapods官網(wǎng)
https://guides.cocoapods.org/using/getting-started.html
版權(quán)聲明：
轉(zhuǎn)載時(shí)請(qǐng)注明作者Kovli以及本文地址：
http://www.kovli.com/2024/12/18/old-macos-install-cocoapods/
