Development
R Package: The Build Only Uses a Single Thread
**Problem:**
By default, R compiles packages using a single thread, which causes the build to be slow.  
**Solution:**
To parallelize the compilation, create or edit the `~/.R/Makevars` file, and add a line like the following:  
```ini
MAKEFLAGS = -j8
```  
The above will parallelize the compilation using 8 threads. On Linux/macOS, you can add the following to use all of the machine's threads:  
```ini
MAKEFLAGS = -j$(nproc)
```  
However, note that, the more threads that are used, the higher the RAM consumption. If the system runs out of RAM while compiling, then the R session will crash.