Zef::Repository.candidates gets surprised by Nil return of search calls (related to native dependencies?)

[timo]

When running zef depends Git::Files which depends on git:from<bin>, i.e. a native dependency, then in this code:

zef/lib/Zef/Repository.rakumod

Lines 139 to 147 in da187d3

	my $group-results := @repo-group.hyper(:batch(1)).map: -> $repo {
	my @search-for = $repo.id eq 'Zef::Repository::LocalCache' ?? @identities !! @look-for;
	$repo.search(@search-for, :strict);
	}
	for $group-results.flat -> $dist {
	%searchable{$dist.as} = 0;
	take $dist;
	}

either $group-results or $group-results.flat will result in (Nil,).Seq, causing %searchable{Nil} = 0;, which outputs a warning.

[ugexe]

Huh, I did not expect this type of behavior

$ raku -e 'say Nil.asaasdfasdf'
Nil