From 9dd5dc57a77b1b592708a6d27fef081be0b06fa8 Mon Sep 17 00:00:00 2001
From: volth <volth@webmaster.ms>
Date: Fri, 12 Oct 2018 00:45:59 +0000
Subject: [PATCH 1/2] bootStage1: fix cross build

---
 nixos/modules/system/boot/stage-1.nix | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/nixos/modules/system/boot/stage-1.nix b/nixos/modules/system/boot/stage-1.nix
index f58b68cb335..8688b5ad9bf 100644
--- a/nixos/modules/system/boot/stage-1.nix
+++ b/nixos/modules/system/boot/stage-1.nix
@@ -251,7 +251,8 @@ let
     postInstall = ''
       echo checking syntax
       # check both with bash
-      ${pkgs.bash}/bin/sh -n $target
+      ${pkgs.buildPackages.bash}/bin/sh -n $target
+    '' + optionalString (pkgs.stdenv.hostPlatform == pkgs.stdenv.buildPlatform) ''
       # and with ash shell, just in case
       ${extraUtils}/bin/ash -n $target
     '';

From b3dff39105beb0190d9a576afba95cd2a6903540 Mon Sep 17 00:00:00 2001
From: volth <volth@webmaster.ms>
Date: Fri, 12 Oct 2018 09:24:00 +0000
Subject: [PATCH 2/2] bootStage1: fix cross build (@matthewbauer's solution)

---
 nixos/modules/system/boot/stage-1.nix | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/nixos/modules/system/boot/stage-1.nix b/nixos/modules/system/boot/stage-1.nix
index 8688b5ad9bf..f4cf9753c0a 100644
--- a/nixos/modules/system/boot/stage-1.nix
+++ b/nixos/modules/system/boot/stage-1.nix
@@ -252,9 +252,8 @@ let
       echo checking syntax
       # check both with bash
       ${pkgs.buildPackages.bash}/bin/sh -n $target
-    '' + optionalString (pkgs.stdenv.hostPlatform == pkgs.stdenv.buildPlatform) ''
       # and with ash shell, just in case
-      ${extraUtils}/bin/ash -n $target
+      ${pkgs.buildPackages.busybox}/bin/ash -n $target
     '';
 
     inherit udevRules extraUtils modulesClosure;