pak is enabled, but not used during initialization

[memeplex]

r$> renv::init()
- Resolving missing dependencies ... 
# Downloading packages -------------------------------------------------------
✔ blob 1.3.0                               [50 kB in 0.46s]                                                                                                          
✔ mime 0.13                                [48 kB in 0.47s]                                                                                                          
✔ lifecycle 1.0.5                          [133 kB in 0.73s] 
...

During initialization renv detects missing dependencies from the source code and starts installing (without asking, isn't it a bit too much?), but it's not using pak to do it.

If later I explicitly call renv::install then pak is used as expected.

See diagnostics in my previous report #2280