Unable to install packages in latest version of RStudio and R Version.3.1.1 [duplicate]

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Not 100% certain that you have the same problem, but I found out the hard way that my job blocks each mirror site option that was offered and I was getting errors like this:

Installing package into ‘/usr/lib64/R/library’
(as ‘lib’ is unspecified)
--- Please select a CRAN mirror for use in this session ---
Error in download.file(url, destfile = f, quiet = TRUE) : 
  unsupported URL scheme
Warning: unable to access index for repository https://rweb.crmda.ku.edu/cran/src/contrib
Warning message:
package ‘ggplot2’ is not available (for R version 3.2.2)

Workaround (I am using CentOS)…

install.packages('package_name', dependencies=TRUE, repos="http://cran.rstudio.com/")

I hope this saves someone hours of frustration.

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