If you’re really looking for lightweight and resolable I think you’ll have a frustrating search. I don’t think they are compatible goals.
For example I own a shoe that really is resolable – the toe-curlingly named Nimble Toes Trail (pun intended).
https://www.joe-nimble.com/int/men/sport/nimbletoes-trail-274
It’s a minimal shoe by German company Joe Nimble and hand-sewn in India in their own ethically-run facility. This traditional construction is reflected in the price, which is eye-watering. I got mine in a sale. So a resolable shoe is going to cost a lot if the workers aren’t being exploited.
They have a resoling service, but it’s not cheap. And the upper is giving out before the sole, so the potential for resoling is somewhat academic.
The cost of the hand-sewn shoe and the resole would be more than the cost of two more conventional shoes. The saving in fabric would be pretty minimal – a fraction of a square yard.
If you really want something that will last you’ll have to go for a traditionally made boot, but then you have something that’s slow to dry and a whole load of extra weight on the end of your longest levers. Plus far more resources went into its manufacture. So I’m not sure there’s a clear cut case that it’s better for the planet, and in my experience it’s certainly not better for the walker…
As for the Joe Nimble shoe, it’s surprisingly durable for the weight and constructed of prime materials. But I found that the Vibram sole is virtually useless for anything tougher than a groomed trail – it’s horrible on mud or slick rock. Pretty much a fail – I don’t use it for anything serious.