mkosi: fix missing pefile dependency

When building a bootable image, mkosi will invoke python with a script
that import pefile. We therefor add a python interpreter with the
needed module and pass it over the intended env var.

Co-authored-by: Malte Poll <mp@edgeless.systems>
Signed-off-by: Paul Meyer <49727155+katexochen@users.noreply.github.com>

pkgs/tools/virtualization/mkosi/default.nix

@@ -1,10 +1,12 @@
 { lib
 , fetchFromGitHub
+, python3
 , setuptools
 , setuptools-scm
 , wheel
 , buildPythonApplication
 , pytestCheckHook
+, pefile
 , bubblewrap
 , systemd
 , stdenv
@@ -19,6 +21,10 @@ let
     withEfi = true;
     withUkify = true;
   };
+
+  python3pefile = python3.withPackages (ps: with ps; [
+    pefile
+  ]);
 in
 buildPythonApplication rec {
   pname = "mkosi";
@@ -49,6 +55,10 @@ buildPythonApplication rec {
     wheel
   ];
 
+  makeWrapperArgs = [
+    "--set MKOSI_INTERPRETER ${python3pefile}/bin/python3"
+  ];
+
   propagatedBuildInputs = [
     systemdForMkosi
     bubblewrap