> First it’s necessary to install OCaml and Opam. Opam is the default package manager for OCaml projects.
$ sudo apt install opam
...list of packages, including several python 2 packages, darcs, and mercurial ---
After this operation, 451 MB of additional disk space will be used.
Do you want to continue? [Y/n] n
Abort.
Python 2 ? In 2021?
Also, darcs? And mercurial?
