From 7e0ea16112433f4443293fe62f12c7507287ff68 Mon Sep 17 00:00:00 2001
From: Jean-Paul Calderone <exarkun@twistedmatrix.com>
Date: Tue, 10 Sep 2019 16:04:23 -0400
Subject: [PATCH] Make the nixpkgs revision more easily accessible

---
 .circleci/config.yml | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 572120c..aaafaf2 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -20,9 +20,14 @@ jobs:
       - image: "nixos/nix:2.2.1"
 
     environment:
-      NIX_PATH: "nixpkgs=https://github.com/NixOS/nixpkgs/archive/3c83ad6ac13b67101cc3e2e07781963a010c1624.tar.gz"
+      NIXPKGS_REV: "3c83ad6ac13b67101cc3e2e07781963a010c1624"
 
     steps:
+      - run:
+          name: "Setup NIX_PATH Environment Variable"
+          command: |
+            echo "export NIX_PATH=nixpkgs=https://github.com/NixOS/nixpkgs/archive/$NIXPKGS_REV.tar.gz >> $BASH_ENV"
+
       - run:
           name: "Install CA Certificates"
           command: |
-- 
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