xpay: one channel with min htlc > payment amount fails entire payment

[JssDWt]

cln v24.11.1
xpay-handle-pay=true

I was paying a node that had a channel with 1000 sat min_htlc. The payment was 10 sat. Upon encountering this constraint, the entire payment failed. The pay plugin was able to pay the same invoice through another channel.

Suggestion: remove the channel in question from pathfinding and try again?

Payment fails with Amount 10000msat below minimum 1000000msat across 871662x1524x0/1

2025-01-30T17:06:07.685Z DEBUG   plugin-cln-xpay: Got command pay
2025-01-30T17:06:07.685Z INFO    plugin-cln-xpay: Redirecting pay->xpay
2025-01-30T17:06:07.686Z DEBUG   plugin-cln-xpay: Got command preapproveinvoice
2025-01-30T17:06:07.688Z DEBUG   plugin-cln-xpay: Got command askrene-create-layer
2025-01-30T17:06:07.689Z DEBUG   plugin-cln-xpay: notify msg debug: getroutes from 02c811e575be2df47d8b48dab3d3f1c9b0f6e16d0d40b5ed78253308fc2bd7170d to 02356bca6f6bf2da33eb01e4b754a9fc575552e87cfd765893b79f83983fead301
2025-01-30T17:06:07.689Z DEBUG   plugin-cln-xpay: 4: getroutes from 02c811e575be2df47d8b48dab3d3f1c9b0f6e16d0d40b5ed78253308fc2bd7170d to 02356bca6f6bf2da33eb01e4b754a9fc575552e87cfd765893b79f83983fead301
2025-01-30T17:06:07.690Z DEBUG   plugin-cln-xpay: Got command getroutes
2025-01-30T17:06:07.691Z DEBUG   plugin-cln-xpay: Got command listpeerchannels
2025-01-30T17:06:09.405Z DEBUG   plugin-cln-askrene: Adding auto.localchans
2025-01-30T17:06:09.405Z DEBUG   plugin-cln-askrene: Adding auto.sourcefree
2025-01-30T17:06:09.405Z DEBUG   plugin-cln-askrene: notify msg unusual: Amount 10000msat below minimum 1000000msat across 871662x1524x0/1
2025-01-30T17:06:09.405Z INFO    plugin-cln-askrene: \"1/cln:xpay-as-pay#1407/cln-xpay:getroutes#43/cln:getroutes#1412\": Amount 10000msat below minimum 1000000msat across 871662x1524x0/1
2025-01-30T17:06:09.405Z DEBUG   plugin-cln-askrene: notify msg unusual: Flow 0/1 was too constrained (Amount 10000msat below minimum 1000000msat across 871662x1524x0/1) so removing it
2025-01-30T17:06:09.405Z INFO    plugin-cln-askrene: \"1/cln:xpay-as-pay#1407/cln-xpay:getroutes#43/cln:getroutes#1412\": Flow 0/1 was too constrained (Amount 10000msat below minimum 1000000msat across 871662x1524x0/1) so removing it