问题描述
我正尝试在Mac(最新的操作系统以及所有更新)上安装Ruby版本2.7.2,并执行以下操作
bool isFirstRun = true;
do
{
if (!isFirstRun) Console.WriteLine();
isFirstRun = false;
Console.Write("Give the width of the window between " + MIN_WIDTH + " and " + MAX_WIDTH + ": ");
widthString = Console.ReadLine();
width = double.Parse(widthString);
if (width < MIN_WIDTH)
{
Console.WriteLine("Width is too small.");
}
if (width > MAX_WIDTH)
{
Console.WriteLine("Width is too large.");
}
} while (width < MIN_WIDTH || width > MAX_WIDTH);
然后
brew update
brew upgrade rbenv ruby-build
所以我尝试按照上面的说明进行操作
rbenv install 2.7.2
ruby-build: definition not found: 2.7.2
See all available versions with `rbenv install --list'.
If the version you need is missing,try upgrading ruby-build:
brew update && brew upgrade ruby-build
解决方法
您需要安装最新的ruby-build
$ brew unlink ruby-build # remove STABLE version
$ brew install --HEAD ruby-build
$ rbenv install -l | grep '2.7.2'
2.7.2
Only latest stable releases for each Ruby implementation are shown.
Use 'rbenv install --list-all' to show all local versions.
,
@ andrei-kovrov的回答是正确的,但也可以等到此PR合并后:
https://github.com/Homebrew/homebrew-core/pull/62096
顺便说一句,这个答案不能满足年龄要求,因此,仅供参考,下面是公式发布之前的阶段:
https://github.com/Homebrew/homebrew-core/pulls
,根据指定的路径读取正确的红宝石版本可能是一个问题。如果您已经安装了其他版本的ruby,则该路径可能不会更新以寻找较新的版本。
本文提供了有关如何在Mac上设置红宝石的大量非常有用的信息: https://stackify.com/install-ruby-on-your-mac-everything-you-need-to-get-going/