You should ask your doctor but my guess is it should not be any more difficult that had you not had pancreatitis. But I am not a doctor or any type of medical professional,
You shouldn't start treatment with a medication that can cause pancreatitis while you have pancreatitis. I bet any doctor would tell you that. Epclusa includes sofosbuvir which lists "pancreatitis" as a possible side effect.
Here's a study that says....
"There were 7 grade 3 events including anemia, neutropenia, nausea, hypophosphatemia, and cholelithiasis or pancreatitis."