I need to install the package devtools in R on my mac. The R version is 3.2.3. It gives an error saying
Warning in install.packages :
download had nonzero exit status
Warning in install.packages :
download of package ‘curl’ failed
Other posts addressing similar issues provide solutions to Linux (with the apt-get command, etc) but doesn't seem to have a Mac solution. Highly appreciate if someone with insight can offer some guide here.
The problem pertains to the download, have a look at this discussion. You can consider downloading the package first and installing a package from a local zip file.
install.packages("local_package_file", repos = NULL)
or more specifically:
install.packages("devtools.zip", repos = NULL, type = "source")
as shown on the devtools @ GitHub.
You didn't mentioned, but I understand that you have the Xcode installed as well. Alternatively, it could be informative to check if your R compiler has no problems with connecting to the Internet, you can use the code: is.character(getURL("www.google.com")).
