`opam option`: make `default-invariant` modifiable

…re directories

Co-authored-by: Raja Boujbel <[email protected]>

…dated git submodule in its local cache

…p-to-date

`--depext-only` no longer return 0 if there is a conflict

…aths in opam outputs

reftest: add 'sed-hash' command to replace single hashes and hashes paths in opam outputs

`opam remove --force` no longer run commands in current directory

Update Windows bootstrap dependencies

…rchive

Make the release archive reproducible

…parsing

depexts: Harden the parsing of 'apk policy' on Alpine

Add opam-set-os command for cleaner reftest OS family configuration

Environment variables registered in variables.sh remain even on opam env
for a different switch.