Install optional in environment

[dletai]

Currently, dnf environment info also provides optional groups, however the mechanism for installing environment groups is via

dnf install @environment-id

The issue here is that the install command doesn't accept the --with-optional flag, and while the group install command does have --with-optional, it doesn't recognize the @environment-id spec.

This result in there being no immediate mechanism for installing an environment group with its optionals.

I'd imagine the solution is either let dnf group install recognize @environment-id, let dnf install accept --with-optional or (best?) do both.

[ppisar]

I think environments can be installed with "dnf5 group install" command. That means you can use --with-optional there.

At then end, removing the environments works with "dnf group". I don't fully understand why listing environments is handled by a special command and with with "dnf group". I will ask other DNF5 maintainers on their opinion.

I think we should improve the documentation.

[ppisar]

Related issue #724.

A DNF5 developer who implemented the "dnf environment" command said that "dnf environment" should be enhanced with "install" subcommand, including "--with-optional" option.