6.2.901.900
1 Installation
Install Racket, which includes DrRacket.
Linux and Mac users: update your PATH to include "/path-to-new-racket-directory/bin/". Then you’ll have access to raco (see raco: Racket Command-Line Tools).
Mac users who haven’t done this before: these instructions are simple and accurate.
Windows users, I’ll trust you to convert raco into the appropriate command for your system — assuming defaults, it’s likely to be "C:\Program Files\Racket\raco" (include the surrounding quotes in the command).
Then, from the command line, install Pollen:
raco pkg install pollen
After that, you can update the package from the command line:
raco pkg update --update-deps pollen