From 1b6dd4781f901a769718c49f6f255c15fd376f6e Mon Sep 17 00:00:00 2001
From: Alexandru Ardelean <ardeleanalex@gmail.com>
Date: Tue, 19 Dec 2017 22:29:52 +0200
Subject: [PATCH] python,python3: add support for SOURCE_DATE_EPOCH var

See:
https://github.com/openwrt/packages/issues/5278

This should make Python & Python3 packages reproducible
when building.
In my local tests, I got the same sha256 for a sample
.pyc file, so likely this is the solution that should address
this.

Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>
---
 lang/python/python/Makefile                         |  2 +-
 .../012-add-support-source-date-epoch-pyc.patch     | 10 ++++++++++
 lang/python/python3/Makefile                        |  2 +-
 .../012-add-support-source-date-epoch-pyc.patch     | 13 +++++++++++++
 4 files changed, 25 insertions(+), 2 deletions(-)
 create mode 100644 lang/python/python/patches/012-add-support-source-date-epoch-pyc.patch
 create mode 100644 lang/python/python3/patches/012-add-support-source-date-epoch-pyc.patch

diff --git a/lang/python/python/Makefile b/lang/python/python/Makefile
index 0e0ffc25c..b1bccfc8e 100644
--- a/lang/python/python/Makefile
+++ b/lang/python/python/Makefile
@@ -14,7 +14,7 @@ PKG_NAME:=python
 PKG_VERSION:=$(PYTHON_VERSION).$(PYTHON_VERSION_MICRO)
 # XXX: reset PKG_RELEASE to 1 only if Python's pip & setuptools versions have also bumped;
 #      otherwise, keep bumping PKG_RELEASE
-PKG_RELEASE:=5
+PKG_RELEASE:=6
 
 PKG_SOURCE:=Python-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=https://www.python.org/ftp/python/$(PKG_VERSION)
diff --git a/lang/python/python/patches/012-add-support-source-date-epoch-pyc.patch b/lang/python/python/patches/012-add-support-source-date-epoch-pyc.patch
new file mode 100644
index 000000000..6f33bed1e
--- /dev/null
+++ b/lang/python/python/patches/012-add-support-source-date-epoch-pyc.patch
@@ -0,0 +1,10 @@
+--- a/Lib/py_compile.py
++++ b/Lib/py_compile.py
+@@ -108,6 +108,7 @@ def compile(file, cfile=None, dfile=None, doraise=False):
+             timestamp = long(os.fstat(f.fileno()).st_mtime)
+         except AttributeError:
+             timestamp = long(os.stat(file).st_mtime)
++        timestamp = long(os.getenv('SOURCE_DATE_EPOCH', timestamp))
+         codestring = f.read()
+     try:
+         codeobject = __builtin__.compile(codestring, dfile or file,'exec')
diff --git a/lang/python/python3/Makefile b/lang/python/python3/Makefile
index 924fec58f..b5d9cf46f 100644
--- a/lang/python/python3/Makefile
+++ b/lang/python/python3/Makefile
@@ -16,7 +16,7 @@ PYTHON_VERSION_MICRO:=$(PYTHON3_VERSION_MICRO)
 PKG_NAME:=python3
 # XXX: reset PKG_RELEASE to 1 only if Python's pip & setuptools versions have also bumped;
 #      otherwise, keep bumping PKG_RELEASE
-PKG_RELEASE:=11
+PKG_RELEASE:=12
 PKG_VERSION:=$(PYTHON_VERSION).$(PYTHON_VERSION_MICRO)
 
 PKG_SOURCE:=Python-$(PKG_VERSION).tar.xz
diff --git a/lang/python/python3/patches/012-add-support-source-date-epoch-pyc.patch b/lang/python/python3/patches/012-add-support-source-date-epoch-pyc.patch
new file mode 100644
index 000000000..4c2c2f7cd
--- /dev/null
+++ b/lang/python/python3/patches/012-add-support-source-date-epoch-pyc.patch
@@ -0,0 +1,13 @@
+--- a/Lib/py_compile.py
++++ b/Lib/py_compile.py
+@@ -137,8 +137,9 @@ def compile(file, cfile=None, dfile=None
+     except FileExistsError:
+         pass
+     source_stats = loader.path_stats(file)
++    mtime = int(os.getenv('SOURCE_DATE_EPOCH', source_stats['mtime']))
+     bytecode = importlib._bootstrap_external._code_to_bytecode(
+-            code, source_stats['mtime'], source_stats['size'])
++            code, mtime, source_stats['size'])
+     mode = importlib._bootstrap_external._calc_mode(file)
+     importlib._bootstrap_external._write_atomic(cfile, bytecode, mode)
+     return cfile