opam 2.0.9 release

Feedback on this post is welcomed on Discuss! We are pleased to announce the minor release of opam 2.0.9. This new version contains some back-ported fixes. New features Back-ported ability to load upgraded roots read-only; allows applications compiled with opam-state 2.0.9 to load a root which has been upgraded to opam 2.1 [#4636] macOS sandbox opam 2.0.9 release