From 58f3335cc12336c32df24919e9c3800d965468d6 Mon Sep 17 00:00:00 2001
From: Eric Mastro <eric.mastro@gmail.com>
Date: Mon, 22 Aug 2022 12:55:19 +1000
Subject: [PATCH] [fix] Fix C-compilation error failing tests

---
 codex/purchasing.nim | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/codex/purchasing.nim b/codex/purchasing.nim
index c2ff6e3a..7991ee03 100644
--- a/codex/purchasing.nim
+++ b/codex/purchasing.nim
@@ -32,7 +32,9 @@ proc start(purchase: Purchase) {.gcsafe.}
 func id*(purchase: Purchase): PurchaseId
 proc `==`*(x, y: PurchaseId): bool {.borrow.}
 proc hash*(x: PurchaseId): Hash {.borrow.}
-proc toHex*(x: PurchaseId): string {.borrow.}
+# Using {.borrow.} for toHex does not borrow correctly and causes a
+# C-compilation error, so we must do it long form
+proc toHex*(x: PurchaseId): string = array[32, byte](x).toHex
 
 proc new*(_: type Purchasing, market: Market, clock: Clock): Purchasing =
   Purchasing(