I would not use copalsp and diff would not mix 2 diff types of lube.
As Peterpoddy said Linsead (in old days but still good) acts and lube then as a thread lock but easier to turn when needed than DT spoke lock.
Which is why I use a ceramic or wax type chain lube for threads and nipple/rim, acts as lube but drys hard in helps as thread lock.
Also it has very good “anti fling” propertys so stays put and not get flung all over the place like thinner lube and not get washed out like thin lube.
It is best to lube the nipple/rim hole area as it helps stop binding/twisting when building/truing the wheel (also reduces the number of time you need de tension the wheel)
I would NOT use carbon paste on carbon rims, carbon paste is designed to increase friction so not the thing you what in that area. as it make it hard to to do small turn/tension the spoke