I am trying install devtools and dartR packages, I have updated R version and Rtools. I got error saying
install.packages("devtools")
" Warning in install.packages :
installation of package ‘usethis’ had non-zero exit status"
Any suggestions please and greatly appreciated
Can you please post the complete console output you get when you try to install it? The excerpt you are showing is only telling us that the installation process has failed but it doesn't give us any clue about the cause.
I'm glad your problem is solved now but just for future reference, that particular error message was asking you to update the rlang package.
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