Sweep utxo with swap

[ghost]

If user have more than one utxo and would like to use the swap service to get it into LN, is there a way with Zeus, how to sweep only selected one and not multiple?

Cannot find a way how to do that.

Would be great to allow me select:
a) the channel where the swap should send the sats
b) the particular utxo providing them

Also after using external services while attempting to get rid of entire utxo - user need to calculate price of tx while deducing fees.

Zeus allow for on chain tx crafting the coin control and use all of it but after choosing the fees, there is no info about the cost of tx.

Not entirely relevant for swap (in case of doing swap in Zeus one could not care at all) but overall usable.

[Darth-Coin]

I support this 👍, good coin control.
I will have to add something: a LND node with anchor channels must keep a single UTXO of maximum 100k sats for closing spiking fees. Would be nice to have a way to mark that UTXO as "anchor reserve", so the user cannot accidentally spend it.

[ghost]

Didn't know this one - what will happen if there is only LN opened and 0 UTXO?
Meaning the user spend it, does that resolve with force close?

[Darth-Coin]

If the closing tx doesn't have enough sats to pay the fees, it will remain in pending forever or until some miner will take that tx and included into a block.

What you can do (more expensive):

• pay an "out of band" fee to the miner to include your closing tx with that low fee
• make a CPFP tx with that pending closing tx. Reminder: never do a RBF for a closing channel tx