If you know the temperature coefficient of the wire, this isn't particularly hard to do! You can do it easily by applying a constant voltage roughly of the want

If you know the temperature coefficient of the wire, this isn't particularly hard to do! You can do it easily by applying a constant voltage roughly of the wanted amperage and then calculating the resistance via voltage and resulting amperage, then feedback to adjust voltage. It's fairly popular in a wide range of applications, mostly either machines with too much current or too large areas to reasonably measure temperature or parts that are too small (vape coils for example can be used in a temperature coefficient mode).