Looking at the release notes:
Note: RStudio Server Pro now requires a Postgres database when using its internal load balancer;
But the Linux downloads for RStudio Desktop 1.4.1103 on:
now have links to libpq (from PostgreSQL).
This makes the installation of RStudio Desktop more challenging (for me, requiring the compilation of PostgreSQL from source).
Before I undertake that, I would like to understand the reason for the decision to link RStudio Desktop to PostgreSQL (particularly what functionality does it add?). I would expect to see that connectivity in the odbc package, not in the basic desktop.