mkosi: allow use of python3 from tools tree (#442643)

Signed-off-by: Moritz Sanft <58110325+msanft@users.noreply.github.com>

---

 mkosi/__init__.py   | 17 +++++++----------

 mkosi/bootloader.py |  5 +----

 mkosi/bootloader.py |  3 +--

 mkosi/run.py        |  8 ++++----

 3 files changed, 12 insertions(+), 18 deletions(-)

 3 files changed, 12 insertions(+), 16 deletions(-)

diff --git a/mkosi/__init__.py b/mkosi/__init__.py

index 65cac772bf1fc9feabec5740ed89a958ba406125..c0debc09a76f36ae878bd172294eee6637b95bcb 100644

         die(

             f"Found '{ukify}' with version {v} but version {version} or newer is required to {reason}.",

diff --git a/mkosi/bootloader.py b/mkosi/bootloader.py

index 6f112b854f72a8863dc5e7348f0154851d3dda96..8fdf2c5df7950c032bfcd36d89f7824e86ec9173 100644

index 6f112b854f72a8863dc5e7348f0154851d3dda96..28b32b9c8fcaa7c49a7d69e7e303ccf332d47d58 100644

--- a/mkosi/bootloader.py

+++ b/mkosi/bootloader.py

@@ -268,10 +268,7 @@ def find_signed_grub_image(context: Context) -> Optional[Path]:

@@ -270,8 +270,7 @@ def find_signed_grub_image(context: Context) -> Optional[Path]:

 def python_binary(config: Config) -> PathString:

-    # If there's no tools tree, prefer the interpreter from MKOSI_INTERPRETER. If there is a tools

-    # tree, just use the default python3 interpreter.

     # If there's no tools tree, prefer the interpreter from MKOSI_INTERPRETER. If there is a tools

     # tree, just use the default python3 interpreter.

-    exe = Path(sys.executable)

-    return "python3" if config.tools_tree or not exe.is_relative_to("/usr") else exe

+    return "@PYTHON_PEFILE@"

+    return "python3" if config.tools_tree else "@PYTHON_PEFILE@"

 def extract_pe_section(context: Context, binary: Path, section: str, output: Path) -> Path: