自 Big Sur 以来，安装需要在 macOS 中编译的 R 包已被破坏。这是一个这样的例子。
> install.packages('nlme')
There is a binary version available but the source version is later:
binary source needs_compilation
nlme 3.1-150 3.1-151 TRUE
Do you want to install from sources the package which needs compilation? (Yes/no/cancel) Yes
installing the source package ‘nlme’
trying URL 'https://cran.rstudio.com/src/contrib/nlme_3.1-151.tar.gz'
Content type 'application/x-gzip' length 805592 bytes (786 KB)
==================================================
downloaded 786 KB
* installing *source* package ‘nlme’ ...
** package ‘nlme’ successfully unpacked and MD5 sums checked
** using …