From a1a84855789a0f81fa0a7ed5aa97d2edc1bf642c Mon Sep 17 00:00:00 2001
From: Tobias Happ <tobias.happ@gmx.de>
Date: Tue, 31 Dec 2019 15:51:01 +0100
Subject: [PATCH] Be more error prone and explicit

---
 pkgs/nix-directory.nix | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/pkgs/nix-directory.nix b/pkgs/nix-directory.nix
index e26238d..af91e47 100644
--- a/pkgs/nix-directory.nix
+++ b/pkgs/nix-directory.nix
@@ -24,9 +24,13 @@ stdenv.mkDerivation {
   src = builtins.fetchurl {
     url = "https://nixos.org/releases/nix/nix-2.3.1/nix-2.3.1-${config.build.arch}-linux.tar.xz";
     sha256 =
-      if config.build.arch == "aarch64"
-      then "94a6a525bd0b2df82e14b96b5b0eaae86669b5d4671aacfc4db2db85325a81c1"
-      else "a5d3f26d4a449616bf654286f2fe29c1c1df4f029b7e29fa3ccf8494d598bfee";  # i686
+      let
+        archShas = {
+         aarch64 = "94a6a525bd0b2df82e14b96b5b0eaae86669b5d4671aacfc4db2db85325a81c1";
+         i686 = "a5d3f26d4a449616bf654286f2fe29c1c1df4f029b7e29fa3ccf8494d598bfee";
+        };
+      in
+        "${archShas.${config.build.arch}}";
   };
 
   PROOT_NO_SECCOMP = 1;  # see https://github.com/proot-me/PRoot/issues/106