一个R lib文件夹，最好就装一个版本的R packages，因为不同版本存在兼容性问题。
偶然间我把新版本装到了旧版本里，产生了兼容性问题。
用以下代码重装就行
GPT神器，问题如下：
- how to list R package that build under specific version of R?
- how to reinstall these packages?
installed <- installed.packages()
built_under <- installed[installed[, "Built"] == "4.4.1", ]
built_under[, c("Package", "Built")]specific_version <- installed[installed[, "Built"] == "4.4.1", ]
packages_to_reinstall <- specific_version[, "Package"]install.packages(packages_to_reinstall)
