Add attrs like directory path to registry list output. #4069
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The registry targets can have associated attributes (e.g.
github.com/owner/repo?dir=subdir/in/repo
) but the attributes are not displayed on a registry listing. They are currently only visible via the$ nix flake info flake:foo
command, but if there is a problem with the registry entry, an error is displayed without any local information. It is sometimes possible to extract the attribute from the error message, but since the attributes are local information that doesn't depend on the remote object, they should be visible independently of success in accessing the remote object.This can also cause confusion about the registry support for these attributes (see issue #4050).
This patch adds the display of the attributes to the
registry list
command. At present, the only attribute I'm aware of is the "dir" attribute; in the future it may be appropriate to add filtering if there are attributes that should not be visible.