NOTE: UPDATING
Before you update PLEASE make sure you use the command /scoreboard objectives remove traderTimer right before reloading. This scoreboard has changed across versions and must be cleared.

Does it ever seem like the Wandering Trader takes forever to spawn? This datapack fixes that!
The random spawn attempt mechanic used by vanilla Minecraft to spawn wandering traders is disabled, and a hard cooldown is instead placed on their spawning. Every 30 minutes of real time that a player is logged in, a trader and their llamas will be spawned randomly nearby. The cooldowns are individualized to every player, so that multiple players can have a wandering trader at once.
The despawn delays on traders are also lowered to 10 minutes, so that there are 20 minute gaps between wandering trader visits. However, the spawn delay can be changed in the advancements/traderspawn.json and the despawn delay can be changed in the functions/spawn.mcfunction files.

While wandering traders are not always incredibly useful, they can be invaluable in certain gamemodes, such as skyblock or single-biome survival. This datapack should help in these scenarios by lessening the waiting game associated with acquiring the materials locked behind wandering traders.

This should be compatible with any datapack that alters the wandering trader's trades. If you find one that isn't compatible, let me know in the comments!