From 275dbd33b5a19b046c58637578254cf48ebe0450 Mon Sep 17 00:00:00 2001
From: Jean-Paul Calderone <exarkun@twistedmatrix.com>
Date: Fri, 5 Jun 2020 09:21:45 -0400
Subject: [PATCH] use fixed-output expression for nixpkgs
this means we don't have to download it every time
---
shell.nix | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/shell.nix b/shell.nix
index bbfb2bc7..f13af40c 100644
--- a/shell.nix
+++ b/shell.nix
@@ -1,7 +1,11 @@
let
nixpkgs-rev = builtins.readFile ./nixpkgs.rev;
- nixpkgs-src = "https://github.com/NixOS/nixpkgs-channels/archive/${nixpkgs-rev}.tar.gz";
- nixpkgs = import (builtins.fetchTarball nixpkgs-src) { };
+ nixpkgs-url = "https://github.com/NixOS/nixpkgs-channels/archive/${nixpkgs-rev}.tar.gz";
+ nixpkgs-src = builtins.fetchTarball {
+ url = nixpkgs-url;
+ sha256 = "sha256:0bv34yz892yxhx2kb8a1yr5pm0g8ck5w021yj87r7kfnp416apdh";
+ };
+ nixpkgs = import nixpkgs-src { };
in
{ pkgs ? nixpkgs }:
let
--
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