From 6a980e0a537d35d076ecdda2113e194943b6dba4 Mon Sep 17 00:00:00 2001
From: Peter Taoussanis <peter@taoensso.com>
Date: Fri, 18 Nov 2022 10:59:26 +0100
Subject: [PATCH] [fix] [#360] Broken GraalVM compatibility (@borkdude)

---
 src/taoensso/timbre.cljc | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/taoensso/timbre.cljc b/src/taoensso/timbre.cljc
index eebadcbf..d81ffc4c 100644
--- a/src/taoensso/timbre.cljc
+++ b/src/taoensso/timbre.cljc
@@ -752,8 +752,9 @@
 ;; Try enable reproducible builds by ensuring that `log!` macro expansion
 ;; produces deterministic callsite-ids, Ref. #354
 #?(:cljs (def ^:private deterministic-rand rand) ; Dummy, non-deterministic
-   :clj  (let [rand ^java.util.Random (java.util.Random. 715873)]
-           (defn- deterministic-rand [] (.nextDouble rand))))
+   :clj  (let [;; Must be delayed for GraalVM compatibility, Ref. #360
+               rand_ (delay (java.util.Random. 715873))]
+           (defn- deterministic-rand [] (.nextDouble ^java.util.Random @rand_))))
 
 (defmacro log! ; Public wrapper around `-log!`
   "Core low-level log macro. Useful for tooling/library authors, etc.