Problem description

https://pixi.sh/latest/reference/pixi_manifest/#exclude-newer-optional allows to exclude packages that are newer than a given date.

Would it make sense to also support a relative time scale as a convenience, e.g. --exclude-newer 7d meaning exclude packages that were published within the last 7 days? Applications could be scenarios that want to update regularly but skip the bleeding edge.

While technically the caller could calculate the respective date and pass that, it may be a nice convenience to support this out-of-the box.