From a9203c21eca60ce4be95fd3ccb64e9f1329c1980 Mon Sep 17 00:00:00 2001
From: Robin Stumm <robin.stumm@iohk.io>
Date: Wed, 23 Nov 2022 21:30:08 +0100
Subject: [PATCH] purify nix evaluation of hydra jobs

---
 nix/default.nix | 6 ++++--
 release.nix     | 5 ++++-
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/nix/default.nix b/nix/default.nix
index 2dbaff8..d13d07f 100644
--- a/nix/default.nix
+++ b/nix/default.nix
@@ -7,8 +7,10 @@ let
   sources = import ./sources.nix { inherit pkgs; }
     // sourcesOverride;
   iohkNix = import sources.iohk-nix {};
-  haskellNix = import sources."haskell.nix" {};
-  nixpkgs = haskellNix.sources.nixpkgs-2105;
+  haskellNix = import sources."haskell.nix" {
+    pkgs = import nixpkgs { inherit system; };
+  };
+  nixpkgs = iohkNix.nixpkgs;
 
   # for inclusion in pkgs:
   overlays =
diff --git a/release.nix b/release.nix
index 5281a6b..52f5577 100644
--- a/release.nix
+++ b/release.nix
@@ -30,7 +30,10 @@
 , sourcesOverride ? {}
 
 # Import pkgs, including IOHK common nix lib
-, pkgs ? import ./nix { inherit sourcesOverride; }
+, pkgs ? import ./nix {
+  inherit sourcesOverride;
+  system = builtins.head supportedSystems;
+}
 
 }: