Cannot install packages to a personal library

[dmattek]

R keeps trying to install packages to /usr/local/lib/R/site-library even if personal library chosen during package installation.

When installing a package:

> install.packages('devtools')
Installing package into ‘/usr/local/lib/R/site-library’
(as ‘lib’ is unspecified)
Warning in install.packages("devtools") :
  'lib = "/usr/local/lib/R/site-library"' is not writable
Would you like to use a personal library instead?  (y/n) y

And then, after downloading packages:

Error: ERROR: no permission to install to directory ‘/usr/local/lib/R/site-library’

Also, it keeps fetching packages from https://mran.microsoft.com even if a different repo chosen in Rstudio GUI.

[mjstealey]

Image has been updated, package installs should now default to user's home directory at:

/home/$USER/R/x86_64-pc-linux-gnu-library/3.4

[ishonest]

@mjstealey Am I doing anything wrong here?

> install.packages('devtools')
Installing package into ‘C:/Users/QED/Documents/R/win-library/3.5’
(as ‘lib’ is unspecified)

  There is a binary version available but the source version is later:
         binary source needs_compilation
devtools  2.2.0  2.2.1             FALSE

installing the source package ‘devtools’

trying URL 'https://cran.rstudio.com/src/contrib/devtools_2.2.1.tar.gz'
Content type 'application/x-gzip' length 372273 bytes (363 KB)
downloaded 363 KB

Error: ERROR: no permission to install to directory 'C:/Users/QED/Documents/R/win-library/3.5'
In R CMD INSTALL
Warning in install.packages :
  installation of package ‘devtools’ had non-zero exit status

The downloaded source packages are in
	‘C:\Users\QED\AppData\Local\Temp\RtmpEZhZXf\downloaded_packages’
> .libPaths()
[1] "C:/Users/QED/Documents/R/win-library/3.5"
[2] "C:/Program Files/R/R-3.5.2/library"