OS:macOS 10.12
python version : 額外安裝的python3
因為python3還沒有完全支援pygame 打算就裝python2可以用的
（也就是官網最新版本）
目前卡在安裝Mercurial這步
~ brew install mercurial
Warning: mercurial 4.2.1 is already installed, it's just not linked.
You can use `brew link mercurial` to link this version.
~ brew link mercurial
Error: Could not symlink share/man/man5/hgignore.5
/usr/local/share/man/man5 is not writable.
Mercurial不處理的話就認不得hg指令
下pip install hg+http://bitbucket.org/pygame/pygame
就會跳出錯誤來
請問我應該如何解決呢
或是有更簡易的安裝方法也可以

pip install https://github.com/pygame/pygame.git

Cannot unpack file /private/var/folders/t9/gmgdrgq96z

or https://github.com/pygame/pygame/archive/master.zip不過我猜 pip install pygame 就可以了(pypi 上有 wheel)