From 548db366fdfe49c4418967c7582130313241dc03 Mon Sep 17 00:00:00 2001
From: Basile Henry <bjm.henry@gmail.com>
Date: Wed, 18 Nov 2020 15:41:27 +0100
Subject: [PATCH] pythonPackages.setuptools: reproducible sdist (#104009)

* setuptools: Remove date from release tag

* setuptools: Fix timestamps in sdist

* setuptools: Move untar/retar to buildPhase

* setuptools: Reproducible 44.0

* setuptools: Use $SOURCE_DATE_EPOCH for src

Co-authored-by: Pavol Rusnak <pavol@rusnak.io>

Co-authored-by: Pavol Rusnak <pavol@rusnak.io>
---
 pkgs/development/python-modules/setuptools/44.0.nix  | 11 ++++++++++-
 .../python-modules/setuptools/default.nix            | 11 ++++++++++-
 .../python-modules/setuptools/tag-date.patch         | 12 ++++++++++++
 3 files changed, 32 insertions(+), 2 deletions(-)
 create mode 100644 pkgs/development/python-modules/setuptools/tag-date.patch

diff --git a/pkgs/development/python-modules/setuptools/44.0.nix b/pkgs/development/python-modules/setuptools/44.0.nix
index 66330ca250f..c2f6eb230b4 100644
--- a/pkgs/development/python-modules/setuptools/44.0.nix
+++ b/pkgs/development/python-modules/setuptools/44.0.nix
@@ -27,14 +27,23 @@ let
       name = "${pname}-${version}-source";
     };
 
+    patches = [
+      ./tag-date.patch
+    ];
+
     buildPhase = ''
       ${python.pythonForBuild.interpreter} bootstrap.py
       ${python.pythonForBuild.interpreter} setup.py sdist --formats=gztar
+
+      # Here we untar the sdist and retar it in order to control the timestamps
+      # of all the files included
+      tar -xzf dist/${pname}-${version}.post0.tar.gz -C dist/
+      tar -czf dist/${name} -C dist/ --mtime="@$SOURCE_DATE_EPOCH" ${pname}-${version}.post0
     '';
 
     installPhase = ''
       echo "Moving sdist..."
-      mv dist/*.tar.gz $out
+      mv dist/${name} $out
     '';
   };
 in buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/setuptools/default.nix b/pkgs/development/python-modules/setuptools/default.nix
index b618ec6f634..54eacea892e 100644
--- a/pkgs/development/python-modules/setuptools/default.nix
+++ b/pkgs/development/python-modules/setuptools/default.nix
@@ -27,14 +27,23 @@ let
       name = "${pname}-${version}-source";
     };
 
+    patches = [
+      ./tag-date.patch
+    ];
+
     buildPhase = ''
       ${python.pythonForBuild.interpreter} bootstrap.py
       ${python.pythonForBuild.interpreter} setup.py sdist --formats=gztar
+
+      # Here we untar the sdist and retar it in order to control the timestamps
+      # of all the files included
+      tar -xzf dist/${pname}-${version}.post0.tar.gz -C dist/
+      tar -czf dist/${name} -C dist/ --mtime="@$SOURCE_DATE_EPOCH"  ${pname}-${version}.post0
     '';
 
     installPhase = ''
       echo "Moving sdist..."
-      mv dist/*.tar.gz $out
+      mv dist/${name} $out
     '';
   };
 in buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/setuptools/tag-date.patch b/pkgs/development/python-modules/setuptools/tag-date.patch
new file mode 100644
index 00000000000..441177a5d17
--- /dev/null
+++ b/pkgs/development/python-modules/setuptools/tag-date.patch
@@ -0,0 +1,12 @@
+diff --git a/setup.cfg b/setup.cfg
+index f23714b6..8aaeb330 100644
+--- a/setup.cfg
++++ b/setup.cfg
+@@ -1,6 +1,6 @@
+ [egg_info]
+ tag_build = .post
+-tag_date = 1
++tag_date = 0
+
+ [aliases]
+ clean_egg_info = egg_info -Db ''