From f78ed9cc4d6dc9c30b2149eddde9caf0058f805a Mon Sep 17 00:00:00 2001
From: Jean-Paul Calderone <exarkun@twistedmatrix.com>
Date: Mon, 16 Sep 2019 09:03:43 -0400
Subject: [PATCH] Still must repeat myself here...

---
 .circleci/config.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index ebf3d46..d4cc783 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -157,7 +157,7 @@ jobs:
 
       - save_cache:
           name: "Cache Nix Store Paths"
-          key: paymentserver-nix-store-v1-{{ .Environment.NIXPKGS_REV }}
+          key: paymentserver-nix-store-v1-{{ checksum "nixpkgs.rev" }}-{{ checksum "ristretto.nix" }}
           paths:
             - "/nix"
 
-- 
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