From 01d078d9702aa032fece5d21ae1670dae538843f Mon Sep 17 00:00:00 2001
From: Linus Heckemann <git@sphalerite.org>
Date: Tue, 10 Jan 2023 14:15:05 +0100
Subject: [PATCH 1/3] vmTools.runInLinuxImage: allow setting root filesystem

---
 pkgs/build-support/vm/default.nix | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/pkgs/build-support/vm/default.nix b/pkgs/build-support/vm/default.nix
index 4ec5531192dc..0bca8e4d30b8 100644
--- a/pkgs/build-support/vm/default.nix
+++ b/pkgs/build-support/vm/default.nix
@@ -72,8 +72,8 @@ rec {
 
     for o in $(cat /proc/cmdline); do
       case $o in
-        mountDisk=1)
-          mountDisk=1
+        mountDisk=*)
+          mountDisk=''${mountDisk#mountDisk=}
           ;;
         command=*)
           set -- $(IFS==; echo $o)
@@ -103,6 +103,8 @@ rec {
 
     if test -z "$mountDisk"; then
       mount -t tmpfs none /fs
+    elif [[ -e "$mountDisk" ]]; then
+      mount "$mountDisk" /fs
     else
       mount /dev/${hd} /fs
     fi
@@ -388,7 +390,7 @@ rec {
      filesystem containing a non-NixOS Linux distribution. */
 
   runInLinuxImage = drv: runInLinuxVM (lib.overrideDerivation drv (attrs: {
-    mountDisk = true;
+    mountDisk = attrs.mountDisk or true;
 
     /* Mount `image' as the root FS, but use a temporary copy-on-write
        image since we don't want to (and can't) write to `image'. */

From e6a4a3feea46c11c9daaba01d8acfe52839e185b Mon Sep 17 00:00:00 2001
From: Linus Heckemann <git@sphalerite.org>
Date: Sat, 28 Jan 2023 11:23:45 +0100
Subject: [PATCH 2/3] vmTools/deb tools: pass through args

This is useful for adding preVM/postVM steps.
---
 pkgs/build-support/vm/default.nix | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/pkgs/build-support/vm/default.nix b/pkgs/build-support/vm/default.nix
index 0bca8e4d30b8..17c9184b0947 100644
--- a/pkgs/build-support/vm/default.nix
+++ b/pkgs/build-support/vm/default.nix
@@ -578,9 +578,9 @@ rec {
 
   fillDiskWithDebs =
     { size ? 4096, debs, name, fullName, postInstall ? null, createRootFS ? defaultCreateRootFS
-    , QEMU_OPTS ? "", memSize ? 512 }:
+    , QEMU_OPTS ? "", memSize ? 512, ... }@args:
 
-    runInLinuxVM (stdenv.mkDerivation {
+    runInLinuxVM (stdenv.mkDerivation ({
       inherit name postInstall QEMU_OPTS memSize;
 
       debs = (lib.intersperse "|" debs);
@@ -649,7 +649,6 @@ rec {
 
         echo "running post-install script..."
         eval "$postInstall"
-        ln -sf dash /mnt/bin/sh
 
         rm /mnt/.debug
 
@@ -660,7 +659,7 @@ rec {
       '';
 
       passthru = { inherit fullName; };
-    });
+    } // args));
 
 
   /* Generate a Nix expression containing fetchurl calls for the
@@ -746,7 +745,7 @@ rec {
     , packagesList ? "", packagesLists ? [packagesList]
     , packages, extraPackages ? [], postInstall ? ""
     , extraDebs ? [], createRootFS ? defaultCreateRootFS
-    , QEMU_OPTS ? "", memSize ? 512 }:
+    , QEMU_OPTS ? "", memSize ? 512, ... }@args:
 
     let
       expr = debClosureGenerator {
@@ -754,10 +753,10 @@ rec {
         packages = packages ++ extraPackages;
       };
     in
-      (fillDiskWithDebs {
+      (fillDiskWithDebs ({
         inherit name fullName size postInstall createRootFS QEMU_OPTS memSize;
         debs = import expr {inherit fetchurl;} ++ extraDebs;
-      }) // {inherit expr;};
+      } // args)) // {inherit expr;};
 
 
   /* The set of supported RPM-based distributions. */

From 5a4f40797c98c8eb33d2e86b8eb78624a36b83ea Mon Sep 17 00:00:00 2001
From: Linus Heckemann <git@sphalerite.org>
Date: Sat, 28 Jan 2023 11:24:16 +0100
Subject: [PATCH 3/3] vmTools.debClosureGenerator: remove apparently obsolete
 bugfix

---
 pkgs/build-support/vm/default.nix | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/pkgs/build-support/vm/default.nix b/pkgs/build-support/vm/default.nix
index 17c9184b0947..5103d745b56e 100644
--- a/pkgs/build-support/vm/default.nix
+++ b/pkgs/build-support/vm/default.nix
@@ -728,9 +728,6 @@ rec {
         esac
       done
 
-      # Work around this bug: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=452279
-      sed -i ./Packages -e s/x86_64-linux-gnu/x86-64-linux-gnu/g
-
       perl -w ${deb/deb-closure.pl} \
         ./Packages ${urlPrefix} ${toString packages} > $out
     '';