Hi there!
I was trying to install shinystan which gave me the error message
ERROR: configuration failed for package ‘RCurl’
* removing ‘/usr/local/lib/R/site-library/RCurl’
ERROR: dependency ‘RCurl’ is not available for package ‘rsconnect’
* removing ‘/usr/local/lib/R/site-library/rsconnect’
ERROR: dependency ‘rsconnect’ is not available for package ‘shinystan’
* removing ‘/usr/local/lib/R/site-library/shinystan’
I then tried to follow the instructions on https://github.com/stan-dev/shinystan/wiki/Installing-the-R-package but had the same problems. Even when trying to install the package devtools I got similar errors:
ERROR: dependency ‘curl’ is not available for package ‘httr’
* removing ‘/usr/local/lib/R/site-library/httr’
ERROR: dependency ‘httr’ is not available for package ‘devtools’
* removing ‘/usr/local/lib/R/site-library/devtools’
I am on Ubuntu, using R version 3.4.1. Any ideas? If more info is needed, just let me know!