From 26eba25577388072ba13b1682860fe872ba39942 Mon Sep 17 00:00:00 2001
From: Maximilian Bosch <maximilian@mbosch.me>
Date: Sun, 24 Nov 2024 13:10:26 +0100
Subject: [PATCH] runInLinuxVM: re-add sourcing of stdenv & .attrs.sh

This is required for `preVM` which can be arbitrary code: e.g.
`vmTools.createEmptyImage` assumes the presence of `$out` in its default
configuration.

Also, before this patch, `preVM` wasn't even set in the
`__structuredAttrs` case.
---
 pkgs/build-support/vm/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/build-support/vm/default.nix b/pkgs/build-support/vm/default.nix
index 648fea5cd016..8e262b20b3f6 100644
--- a/pkgs/build-support/vm/default.nix
+++ b/pkgs/build-support/vm/default.nix
@@ -240,6 +240,10 @@ rec {
 
 
   vmRunCommand = qemuCommand: writeText "vm-run" ''
+    if [ -f "''${NIX_ATTRS_SH_FILE-}" ]; then
+      source "$NIX_ATTRS_SH_FILE"
+    fi
+    source $stdenv/setup
     export > saved-env
 
     PATH=${coreutils}/bin