Release 2.2.0

Opam 2.2.0 release

Pre-alpha TODO

• opam init menus (ocaml/opam#5057; (@AltGr/@rjbou)
• Compiler/base packages bug (ultimately fixing ocaml/opam#5201; @rjbou)
• Software Heritage fallback (ocaml/opam#4859; @rjbou)
  • review @dra27
• Resolving variables before polling system (ocaml/opam#4892; @rjbou)
• Native Windows opam init working (+ possible built-in depext support) (@dra27)
• sub-path pinning display format. Main idea is to merge the display of the path into the URL. e.g. Ok, root-a-i_g is no longer pinned to git+file://${BASEDIR}/pinnes#master (a/i) (version 2) becomes Ok, root-a-i_g is no longer pinned to git+file://${BASEDIR}/pinnes/a/i#master (version 2) (@rjbou)
  • PR ocaml/opam#5219 (@rjbou)
• Renaming of --with-tools to --for-dev (finally closing ocaml/opam#4959)
  • PR ocaml/opam#5214 (@rjbou)
  • Waiting ocaml/opam#5160 (@rjbou)

Pre-RC TODO

• Conflict error messages improvements (ocaml/opam#4373)

Remainder of the project board can be bumped to 2.3 if necessary

Post-RC TODO

• Ensure ocaml/setup-ocaml#647 gets reverted once it's adopted opam 2.2