If a future Scotland gains independence and then seeks entry to the EU I presume (hah - big talk!) that the EU would require Scotland to adopt the Euro, free movement, full trade access and so on. Does that mean that England would want a hard border to prevent EU nationals from wandering in and taking their jobs? Does it mean that the EU would require a hard border to prevent the leaking of non-EU certified goods from England to Scotland?

I lived in Scotland before Brexit and the last IndyRef. Now I live in Ireland. Watching what Brexit has brought to Ireland (thanks Nigel!) makes me wonder what the thinking is on how an independent Scotland inside the EU would work? I suppose there is the precedent of the several other non-EU countries with EU borders. And indeed the history of civil war in Northern Ireland is much more recent than war between Scotland and England, so perhaps it's NBD.