One of the curl maintainers has pointed me to this bug report on Launchpad that may affect r-base users: https://bugs.launchpad.net/ubuntu/+source/curl/+bug/1754294
The issue is that ubuntu now ships both libcurl3 (gnutls, nss) as well as libcurl4 (openssl) which cannot be installed concurrently. Because r-base-core depends on libcurl4, it will conflict with any other packages depending on libcurl3. _______________________________________________ R-SIG-Debian mailing list R-SIG-Debian@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-debian