尝试 brew install watchman 时，地窖中未链接的小桶答案

【问题标题】：Unlinked kegs in cellar when trying to brew install watchman尝试 brew install watchman 时，地窖中未链接的小桶
【发布时间】：2018-05-01 06:58:11
【问题描述】：

我正在尝试通过 Homebrew 安装 watchman。

当它尝试安装其依赖项之一时，我收到此错误：

==> Installing watchman dependency: python@2
==> Downloading https://homebrew.bintray.com/bottles/python@2-2.7.14_3.high_sierra.bottle.2
######################################################################## 100.0%
==> Pouring python@2-2.7.14_3.high_sierra.bottle.2.tar.gz
Error: An unexpected error occurred during the `brew link` step
The formula built, but is not symlinked into /usr/local
Permission denied @ dir_s_mkdir - /usr/local/Frameworks
Error: Permission denied @ dir_s_mkdir - /usr/local/Frameworks

运行brew doctor 给了我：

Warning: You have unlinked kegs in your Cellar
Leaving kegs unlinked can lead to build-trouble and cause brews that depend on
those kegs to fail to run properly once built. Run `brew link` on these:
  python@2
  gnupg

Warning: Broken symlinks were found. Remove them with `brew prune`:
  /usr/local/bin/electron

当我尝试brew link --overwrite python@2 时，我得到：

Linking /usr/local/Cellar/python@2/2.7.14_3... Error: Permission denied @ dir_s_mkdir - /usr/local/Frameworks

当我尝试brew remove python@2 时，我得到：

Error: Refusing to uninstall /usr/local/Cellar/python@2/2.7.14_3
because it is required by mongodb, which is currently installed.
You can override this and force removal with:
  brew uninstall --ignore-dependencies python@2

我在这里有点迷路，因为我几乎没有使用 brew 的经验。我只想安装守望者！

【问题讨论】：

标签： homebrew watchman

【解决方案1】：

似乎 brew 正在尝试链接 python@2 但无法链接，因为它无法创建文件夹 /usr/local/Frameworks。

通过以下步骤解决了这个问题：

sudo mkdir -p /usr/local/Frameworks
sudo chown -R $(whoami) /usr/local/*
brew link python@2

【讨论】：