r - 你能解释一下为什么我不能在 R 版本 3.4.4 上安装 rlang 0.4.10 吗？

Question

当我尝试在 R 版本 3.4.4 上安装 rlang 0.4.10 时，我收到一条错误消息。但是在主页上他们说需要 r 版本 3.3.0。 https://cran.r-project.org/web/packages/rlang/index.html

install.packages("https://cran.r-project.org/bin/windows/contrib/4.2/rlang_0.4.10.zip")

WARNING: Rtools is required to build R packages but is not currently installed. Please download and install the appropriate version of Rtools before proceeding:

https://cran.rstudio.com/bin/windows/Rtools/
Installing package into ‘C:/R/win-library/3.4.4’
(as ‘lib’ is unspecified)
Warning in install.packages :
  package ‘https://cran.r-project.org/bin/windows/contrib/4.2/rlang_0.4.10.zip’ is not available (for R version 3.4.4)

有谁能够帮我？

标签： rrlang