A big part of the motivation was that something like this...

  $ which ggplot
  ggplot () {
          if [[ "$1" == "-f" ]]
          then
                  shift
                  rush run --library tidyverse "$(cat "$1")" -
          else
                  rush run --library tidyverse "$@" -
          fi
  }

  $ echo "one,two,three\n1,2,3\n4,5,6\n,7,8,9" | ggplot 'ggplot(df, aes(one, two)) + geom_col() + theme_minimal()' | imgcat

...is just very slow. Booting R just to run ggplot2 was not cutting it compared to a custom DSL written in Rust!

BTW, that "R on the command line" tool was inspired by:

https://datascienceatthecommandline.com

I really like to build things that build other things!