From de4097d923de211a20f9c535a06d533db9278331 Mon Sep 17 00:00:00 2001
From: Rok Mandeljc <rok.mandeljc@gmail.com>
Date: Thu, 18 Feb 2021 13:49:11 +0100
Subject: [PATCH] depend/utils: strip paths from modules collected into
 base_library.zip

Strip paths from modules collected into base_library.zip, to enable
reproducible builds regardless of python's install location.

Fixes #5563.
---
 PyInstaller/depend/utils.py | 7 ++++++-
 news/5563.bugfix.rst        | 2 ++
 2 files changed, 8 insertions(+), 1 deletion(-)
 create mode 100644 news/5563.bugfix.rst

diff --git a/PyInstaller/depend/utils.py b/PyInstaller/depend/utils.py
index 95846f39d5..bb293859cb 100644
--- a/PyInstaller/depend/utils.py
+++ b/PyInstaller/depend/utils.py
@@ -49,6 +49,10 @@ def create_py3_base_library(libzip_filename, graph):
     modules is necessary to have on PYTHONPATH for initializing libpython3
     in order to run the frozen executable with Python 3.
     """
+    # Import strip_paths_in_code locally to avoid cyclic import between
+    # building.utils and depend.utils (this module); building.utils
+    # imports depend.bindepend, which in turn imports depend.utils.
+    from ..building.utils import strip_paths_in_code
     # Construct regular expression for matching modules that should be bundled
     # into base_library.zip.
     # Excluded are plain 'modules' or 'submodules.ANY_NAME'.
@@ -102,7 +106,8 @@ def create_py3_base_library(libzip_filename, graph):
                                 fc.write(source_hash)
                             else:
                                 fc.write(struct.pack('<II', timestamp, size))
-                            marshal.dump(mod.code, fc)
+                            code = strip_paths_in_code(mod.code)  # Strip paths
+                            marshal.dump(code, fc)
                             # Use a ZipInfo to set timestamp for deterministic build
                             info = zipfile.ZipInfo(new_name)
                             zf.writestr(info, fc.getvalue())
diff --git a/news/5563.bugfix.rst b/news/5563.bugfix.rst
new file mode 100644
index 0000000000..85d5d9db52
--- /dev/null
+++ b/news/5563.bugfix.rst
@@ -0,0 +1,2 @@
+Strip absolute paths from ``.pyc`` modules collected into ``base_library.zip``
+to enable reproducible builds that are invariant to Python install location.