From 52a1f03824d538b5886bacef67df66c22508eb07 Mon Sep 17 00:00:00 2001
From: Greg Brown <gmb60@cam.ac.uk>
Date: Tue, 8 Dec 2020 15:07:16 +0000
Subject: Make substitution into a macro.

---
 Cargo.toml | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'Cargo.toml')

diff --git a/Cargo.toml b/Cargo.toml
index 2fe9469..ae907a5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,9 +5,12 @@ authors = ["Greg Brown <gmb60@cam.ac.uk>"]
 edition = "2018"
 
 [dependencies]
-proc-macro2 = "1.0.24"
 quote = "1.0.7"
 
+[dependencies.proc-macro2]
+version = "1.0.24"
+features = ["span-locations"]
+
 [dependencies.syn]
 version = "1.0.48"
 features = ["extra-traits"]
-- 
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