conda install -c conda-forge r-devtools报错：Solving environment: \ Killed
Solving environment: \ Killed - Product Help - Anaconda Community 中的方法无用
install.packages('devtools')报错：
ERROR: dependencies ‘usethis’, ‘pkgdown’, ‘rcmdcheck’, ‘rversions’, ‘urlchecker’ are not available for package ‘devtools’
依次安装依赖conda install r-usethis,r-pkgdown
最终，解决问题，
install.packages('devtools')