From a5ca9accbf416c6a75fe6dfc7f78aeb22109f1af Mon Sep 17 00:00:00 2001
From: Julien Moutinho <julm+haskell.nix@sourcephile.fr>
Date: Sat, 29 Aug 2020 23:07:52 +0200
Subject: [PATCH] Fix #824 (#824)

---
 flake.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/flake.nix b/flake.nix
index aa64d038b0..23d744b126 100644
--- a/flake.nix
+++ b/flake.nix
@@ -7,7 +7,7 @@
     # Using the eval-on-build version here as the plan is that
     # `builtins.currentSystem` will not be supported in flakes.
     # https://github.com/NixOS/rfcs/pull/49/files#diff-a5a138ca225433534de8d260f225fe31R429
-    overlay = (self.overlays {}).combined-eval-on-build;
+    overlay = (self.overlays {sourcesOverride = self.sources;}).combined-eval-on-build;
     overlays = import ./overlays;
     config = import ./config.nix;
     # We can't import ./nix/sources.nix directly, because that uses nixpkgs to fetch by default,