From 730c92d9e223537a0279a3db6d03283757444680 Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Wed, 25 Dec 2019 07:13:59 +0100
Subject: [PATCH 01/16] libplist: disable python by default

Introduced in 6449435b04cb608389e3d1df653fed857633b724, only Python 2 is supported and it does not seem to be used by anything.
---
 .../development/libraries/libplist/default.nix | 18 ++++++++++--------
 pkgs/top-level/python-packages.nix             |  2 +-
 2 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/pkgs/development/libraries/libplist/default.nix b/pkgs/development/libraries/libplist/default.nix
index 19b700ca5e3..63599c4352d 100644
--- a/pkgs/development/libraries/libplist/default.nix
+++ b/pkgs/development/libraries/libplist/default.nix
@@ -1,8 +1,5 @@
-{ stdenv,  autoreconfHook, fetchFromGitHub, pkgconfig, python2Packages, glib }:
+{ stdenv, autoreconfHook, fetchFromGitHub, pkgconfig, enablePython ? false, python, glib }:
 
-let
-  inherit (python2Packages) python cython;
-in
 stdenv.mkDerivation rec {
   pname = "libplist";
   version = "2019-04-04";
@@ -14,18 +11,23 @@ stdenv.mkDerivation rec {
     sha256 = "19yw80yblq29i2jx9yb7bx0lfychy9dncri3fk4as35kq5bf26i8";
   };
 
-  outputs = ["bin" "dev" "out" "py"];
+  outputs = ["bin" "dev" "out" ] ++ stdenv.lib.optional enablePython "py";
 
   nativeBuildInputs = [
     pkgconfig
-    python
-    cython
     autoreconfHook
+  ] ++ stdenv.lib.optionals enablePython [
+    python
+    python.pkgs.cython
+  ];
+
+  configureFlags = stdenv.lib.optionals (!enablePython) [
+    "--without-cython"
   ];
 
   propagatedBuildInputs = [ glib ];
 
-  postFixup = ''
+  postFixup = stdenv.lib.optionalString enablePython ''
     moveToOutput "lib/${python.libPrefix}" "$py"
   '';
 
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index ec8df201741..b25186a0aa6 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -3863,7 +3863,7 @@ in {
   libsavitar = callPackage ../development/python-modules/libsavitar { };
 
   libplist = disabledIf isPy3k
-    (toPythonModule (pkgs.libplist.override{python2Packages=self; })).py;
+    (toPythonModule (pkgs.libplist.override { enablePython = true; inherit python; })).py;
 
   libxml2 = (toPythonModule (pkgs.libxml2.override{pythonSupport=true; inherit python;})).py;
 

From 4cb22aa377fc688bf58f9d433652820f95e7e90d Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Wed, 25 Dec 2019 07:28:58 +0100
Subject: [PATCH 02/16] gst_all_1.gst-validate: switch to python 3

---
 pkgs/development/libraries/gstreamer/validate/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/libraries/gstreamer/validate/default.nix b/pkgs/development/libraries/gstreamer/validate/default.nix
index 9439ddd94e8..74e89848163 100644
--- a/pkgs/development/libraries/gstreamer/validate/default.nix
+++ b/pkgs/development/libraries/gstreamer/validate/default.nix
@@ -3,7 +3,7 @@
 , pkgconfig
 , gstreamer
 , gst-plugins-base
-, python
+, python3
 , gobject-introspection
 , json-glib
 }:
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
   ];
 
   buildInputs = [
-    python
+    python3
     json-glib
   ];
 

From 544ae9608258c149a1751ac04b4ad7fbb84b49a3 Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Wed, 25 Dec 2019 07:36:29 +0100
Subject: [PATCH 03/16] gst_all_1.gst-editing-services: switch to python 3

Also remove no longer needed perl.
---
 pkgs/development/libraries/gstreamer/ges/default.nix | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/pkgs/development/libraries/gstreamer/ges/default.nix b/pkgs/development/libraries/gstreamer/ges/default.nix
index 6e9a604f794..af2579d0594 100644
--- a/pkgs/development/libraries/gstreamer/ges/default.nix
+++ b/pkgs/development/libraries/gstreamer/ges/default.nix
@@ -4,11 +4,10 @@
 , meson
 , ninja
 , pkgconfig
-, python
+, python3
 , gst-plugins-base
 , libxml2
 , flex
-, perl
 , gettext
 , gobject-introspection
 }:
@@ -34,9 +33,8 @@ stdenv.mkDerivation rec {
     pkgconfig
     gettext
     gobject-introspection
-    python
+    python3
     flex
-    perl
   ];
 
   buildInputs = [

From c691baf85fbcf0dd47174e82e59b03bbf58a1df8 Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Wed, 25 Dec 2019 07:46:32 +0100
Subject: [PATCH 04/16] strongswan: switch to python 3

---
 pkgs/tools/networking/strongswan/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/tools/networking/strongswan/default.nix b/pkgs/tools/networking/strongswan/default.nix
index 27453083d59..fb7de5486fb 100644
--- a/pkgs/tools/networking/strongswan/default.nix
+++ b/pkgs/tools/networking/strongswan/default.nix
@@ -1,6 +1,6 @@
 { stdenv, fetchurl, fetchpatch
 , pkgconfig, autoreconfHook
-, gmp, python, iptables, ldns, unbound, openssl, pcsclite, glib
+, gmp, python3, iptables, ldns, unbound, openssl, pcsclite, glib
 , openresolv
 , systemd, pam
 , curl
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkgconfig autoreconfHook ];
   buildInputs =
-    [ curl gmp python ldns unbound openssl pcsclite ]
+    [ curl gmp python3 ldns unbound openssl pcsclite ]
     ++ optionals enableTNC [ trousers sqlite libxml2 ]
     ++ optionals stdenv.isLinux [ systemd.dev pam iptables ]
     ++ optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ SystemConfiguration ])

From 8b6d76525ea92156504aa76764d9a0962bb2eb58 Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Wed, 25 Dec 2019 08:03:15 +0100
Subject: [PATCH 05/16] libnl: disable python support by default

Nothing much seems to be using it and we do not want Python 2 in our closure.
---
 pkgs/os-specific/linux/libnl/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/os-specific/linux/libnl/default.nix b/pkgs/os-specific/linux/libnl/default.nix
index b3ccda3b50d..61380115ab5 100644
--- a/pkgs/os-specific/linux/libnl/default.nix
+++ b/pkgs/os-specific/linux/libnl/default.nix
@@ -1,5 +1,5 @@
 { stdenv, file, lib, fetchFromGitHub, autoreconfHook, bison, flex, pkgconfig
-, pythonSupport ? stdenv.buildPlatform == stdenv.hostPlatform, swig ? null, python}:
+, pythonSupport ? false, swig ? null, python}:
 
 stdenv.mkDerivation rec {
   pname = "libnl";

From 23ec74b1b25d7743f02c0ceabac442a4fdad0e62 Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Wed, 25 Dec 2019 08:29:14 +0100
Subject: [PATCH 06/16] dtc: disable Python support by default

It does not seem to be used by anything and we want to get rid of Python 2 from closure.
---
 pkgs/development/compilers/dtc/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/development/compilers/dtc/default.nix b/pkgs/development/compilers/dtc/default.nix
index eea75c5ace1..78e5eccbf14 100644
--- a/pkgs/development/compilers/dtc/default.nix
+++ b/pkgs/development/compilers/dtc/default.nix
@@ -1,5 +1,5 @@
 { stdenv, lib, fetchgit, flex, bison, pkgconfig, which
-, pythonSupport ? stdenv.buildPlatform == stdenv.hostPlatform, python, swig
+, pythonSupport ? false, python, swig
 }:
 
 stdenv.mkDerivation rec {

From e9cdcde6ea3cac061c70f808a2a87ca4388cb52b Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Wed, 25 Dec 2019 08:44:13 +0100
Subject: [PATCH 07/16] gst_all_1.gst-plugins-ugly: switch to python 3

---
 pkgs/development/libraries/gstreamer/ugly/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/libraries/gstreamer/ugly/default.nix b/pkgs/development/libraries/gstreamer/ugly/default.nix
index 870b4468860..d8c36fa4070 100644
--- a/pkgs/development/libraries/gstreamer/ugly/default.nix
+++ b/pkgs/development/libraries/gstreamer/ugly/default.nix
@@ -3,7 +3,7 @@
 , meson
 , ninja
 , pkgconfig
-, python
+, python3
 , gst-plugins-base
 , orc
 , gettext
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
     ninja
     gettext
     pkgconfig
-    python
+    python3
   ];
 
   buildInputs = [

From c72e388b7f5c0968c28e0b35922b89fc34fb6242 Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Wed, 25 Dec 2019 08:54:23 +0100
Subject: [PATCH 08/16] gn: switch to python 3

---
 pkgs/development/tools/build-managers/gn/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/tools/build-managers/gn/default.nix b/pkgs/development/tools/build-managers/gn/default.nix
index 7b29e7d02dc..d8557bfcbc2 100644
--- a/pkgs/development/tools/build-managers/gn/default.nix
+++ b/pkgs/development/tools/build-managers/gn/default.nix
@@ -1,5 +1,5 @@
 { stdenv, lib, fetchgit, darwin, writeText
-, git, ninja, python2 }:
+, git, ninja, python3 }:
 
 let
   rev = "64b846c96daeb3eaf08e26d8a84d8451c6cb712b";
@@ -25,7 +25,7 @@ stdenv.mkDerivation {
     inherit rev sha256;
   };
 
-  nativeBuildInputs = [ ninja python2 git ];
+  nativeBuildInputs = [ ninja python3 git ];
   buildInputs = lib.optionals stdenv.isDarwin (with darwin; with apple_sdk.frameworks; [
     libobjc
     cctools

From e4bd8a6faba6cbd1e4ebb0617a1727cfea1ada19 Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Wed, 25 Dec 2019 09:02:20 +0100
Subject: [PATCH 09/16] htop: switch to python 3

---
 pkgs/tools/system/htop/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/tools/system/htop/default.nix b/pkgs/tools/system/htop/default.nix
index 12e54b1b22e..1b68273a570 100644
--- a/pkgs/tools/system/htop/default.nix
+++ b/pkgs/tools/system/htop/default.nix
@@ -1,5 +1,5 @@
 { lib, fetchurl, stdenv, ncurses,
-IOKit, python }:
+IOKit, python3 }:
 
 stdenv.mkDerivation rec {
   pname = "htop";
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
     sha256 = "0mrwpb3cpn3ai7ar33m31yklj64c3pp576vh1naqff6f21pq5mnr";
   };
 
-  nativeBuildInputs = [ python ];
+  nativeBuildInputs = [ python3 ];
   buildInputs =
     [ ncurses ] ++
     lib.optionals stdenv.isDarwin [ IOKit ];

From b842dfd6e4dfac0234be486cac457d94d5e31434 Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Wed, 25 Dec 2019 09:14:51 +0100
Subject: [PATCH 10/16] folks: only depend on Python 3

For some reason we depended on both.
---
 pkgs/development/libraries/folks/default.nix | 2 --
 1 file changed, 2 deletions(-)

diff --git a/pkgs/development/libraries/folks/default.nix b/pkgs/development/libraries/folks/default.nix
index 38e4d2c6884..c08be846915 100644
--- a/pkgs/development/libraries/folks/default.nix
+++ b/pkgs/development/libraries/folks/default.nix
@@ -21,7 +21,6 @@
 , libsecret
 , db
 , python3
-, python
 , readline
 , gtk3
 }:
@@ -51,7 +50,6 @@ stdenv.mkDerivation rec {
     meson
     ninja
     pkgconfig
-    python
     python3
     vala
   ];

From 1fd1737dbdf32b04df3937c2e49bb0ddcda42fe3 Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Wed, 25 Dec 2019 09:17:04 +0100
Subject: [PATCH 11/16] mda_lv2: drop python dep
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

It does not appear to be actually necessary – wafHook will add it.
---
 pkgs/applications/audio/mda-lv2/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/applications/audio/mda-lv2/default.nix b/pkgs/applications/audio/mda-lv2/default.nix
index 61f2bc33f7f..6c4170cf0fb 100644
--- a/pkgs/applications/audio/mda-lv2/default.nix
+++ b/pkgs/applications/audio/mda-lv2/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, fftwSinglePrec, lv2, pkgconfig, python, wafHook }:
+{ stdenv, fetchurl, fftwSinglePrec, lv2, pkgconfig, wafHook }:
 
 stdenv.mkDerivation rec {
   pname = "mda-lv2";
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ pkgconfig wafHook ];
-  buildInputs = [ fftwSinglePrec lv2 python ];
+  buildInputs = [ fftwSinglePrec lv2 ];
 
   meta = with stdenv.lib; {
     homepage = http://drobilla.net/software/mda-lv2/;

From 843d147596d7998e4d74f96c42b9e6f41f926c2d Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Wed, 25 Dec 2019 09:29:32 +0100
Subject: [PATCH 12/16] gnumeric: switch to python 3

---
 pkgs/applications/office/gnumeric/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/applications/office/gnumeric/default.nix b/pkgs/applications/office/gnumeric/default.nix
index 979c960f7a8..710a66c25d8 100644
--- a/pkgs/applications/office/gnumeric/default.nix
+++ b/pkgs/applications/office/gnumeric/default.nix
@@ -1,10 +1,10 @@
 { stdenv, fetchurl, pkgconfig, intltool, perlPackages
-, goffice, gnome3, wrapGAppsHook, gtk3, bison, pythonPackages
+, goffice, gnome3, wrapGAppsHook, gtk3, bison, python3Packages
 , itstool
 }:
 
 let
-  inherit (pythonPackages) python pygobject3;
+  inherit (python3Packages) python pygobject3;
 in stdenv.mkDerivation rec {
   pname = "gnumeric";
   version = "1.12.46";

From c16bcf71ec5c11228eb8bb4e40619a1c48cb4ff1 Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Wed, 25 Dec 2019 09:29:57 +0100
Subject: [PATCH 13/16] packagekit: switch to python 3

---
 pkgs/tools/package-management/packagekit/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/tools/package-management/packagekit/default.nix b/pkgs/tools/package-management/packagekit/default.nix
index a3c3c0d40a9..81cfcb662c4 100644
--- a/pkgs/tools/package-management/packagekit/default.nix
+++ b/pkgs/tools/package-management/packagekit/default.nix
@@ -1,5 +1,5 @@
 { stdenv, fetchFromGitHub, lib
-, intltool, glib, pkgconfig, polkit, python, sqlite
+, intltool, glib, pkgconfig, polkit, python3, sqlite
 , gobject-introspection, vala, gtk-doc, autoreconfHook, autoconf-archive
 # TODO: set enableNixBackend to true, as soon as it builds
 , nix, enableNixBackend ? false, boost
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
     sha256 = "02wq3jw3mkdld90irh5vdfd5bri2g1p89mhrmj56kvif1fqak46x";
   };
 
-  buildInputs = [ glib polkit python gobject-introspection ]
+  buildInputs = [ glib polkit python3 gobject-introspection ]
                   ++ lib.optional enableSystemd systemd
                   ++ lib.optional enableBashCompletion bash-completion;
   propagatedBuildInputs = [ sqlite nix boost ];

From 7e8293edcb854fa647224b6387177836286302ff Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Wed, 25 Dec 2019 09:30:13 +0100
Subject: [PATCH 14/16] qt5.qtdeclarative: switch to python 3

---
 pkgs/development/libraries/qt-5/modules/qtdeclarative.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/libraries/qt-5/modules/qtdeclarative.nix b/pkgs/development/libraries/qt-5/modules/qtdeclarative.nix
index 7c1fa449ebb..b611282294c 100644
--- a/pkgs/development/libraries/qt-5/modules/qtdeclarative.nix
+++ b/pkgs/development/libraries/qt-5/modules/qtdeclarative.nix
@@ -1,11 +1,11 @@
-{ qtModule, lib, python2, qtbase, qtsvg }:
+{ qtModule, lib, python3, qtbase, qtsvg }:
 
 with lib;
 
 qtModule {
   name = "qtdeclarative";
   qtInputs = [ qtbase qtsvg ];
-  nativeBuildInputs = [ python2 ];
+  nativeBuildInputs = [ python3 ];
   outputs = [ "out" "dev" "bin" ];
   preConfigure = ''
     NIX_CFLAGS_COMPILE+=" -DNIXPKGS_QML2_IMPORT_PREFIX=\"$qtQmlPrefix\""

From 6577ec986a6e13a8d9cad4e38501ab618f11c14a Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Wed, 25 Dec 2019 09:32:21 +0100
Subject: [PATCH 15/16] libpwquality: switch to python 3

Nothing seems to use the Python bindings anyway.
---
 pkgs/development/libraries/libpwquality/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/libraries/libpwquality/default.nix b/pkgs/development/libraries/libpwquality/default.nix
index b0d5513ca0f..c3ad33173cd 100644
--- a/pkgs/development/libraries/libpwquality/default.nix
+++ b/pkgs/development/libraries/libpwquality/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, fetchFromGitHub, autoreconfHook, perl, cracklib, python }:
+{ stdenv, lib, fetchFromGitHub, autoreconfHook, perl, cracklib, python3 }:
 
 stdenv.mkDerivation rec {
   pname = "libpwquality";
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ autoreconfHook perl ];
-  buildInputs = [ cracklib python ];
+  buildInputs = [ cracklib python3 ];
 
   meta = with lib; {
     description = "Password quality checking and random password generation library";

From 4a583c8be5cd0ab31bc09c5d295e0676179bcdc1 Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Wed, 25 Dec 2019 16:08:06 +0100
Subject: [PATCH 16/16] crda: port to Python 3

---
 pkgs/os-specific/linux/crda/default.nix | 24 ++++++++++++++++++++++--
 1 file changed, 22 insertions(+), 2 deletions(-)

diff --git a/pkgs/os-specific/linux/crda/default.nix b/pkgs/os-specific/linux/crda/default.nix
index 84c113c648c..501b1fb1884 100644
--- a/pkgs/os-specific/linux/crda/default.nix
+++ b/pkgs/os-specific/linux/crda/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, libgcrypt, libnl, pkgconfig, python2Packages, wireless-regdb }:
+{ stdenv, fetchurl, fetchpatch, libgcrypt, libnl, pkgconfig, python3, wireless-regdb }:
 
 stdenv.mkDerivation rec {
   pname = "crda";
@@ -9,9 +9,24 @@ stdenv.mkDerivation rec {
     url = "http://kernel.org/pub/software/network/crda/crda-${version}.tar.xz";
   };
 
+  patches = [
+    # Switch to Python 3
+    # https://lore.kernel.org/linux-wireless/1437542484-23409-1-git-send-email-ahmed.taahir@gmail.com/
+    (fetchpatch {
+      url = "https://lore.kernel.org/linux-wireless/1437542484-23409-2-git-send-email-ahmed.taahir@gmail.com/raw";
+      sha256 = "0s2n340cgaasvg1k8g9v8xjrbh4y2mcgrhdmv97ja2fs8xjcjbf1";
+    })
+    (fetchpatch {
+      url = "https://lore.kernel.org/linux-wireless/1437542484-23409-3-git-send-email-ahmed.taahir@gmail.com/raw";
+      sha256 = "01dlfw7kqhyx025jxq2l75950b181p9r7i9zkflcwvbzzdmx59md";
+    })
+  ];
+
   buildInputs = [ libgcrypt libnl ];
   nativeBuildInputs = [
-    pkgconfig python2Packages.m2crypto python2Packages.python
+    pkgconfig
+    python3
+    python3.pkgs.pycrypto
   ];
 
   postPatch = ''
@@ -37,6 +52,11 @@ stdenv.mkDerivation rec {
   doCheck = true;
   checkTarget = "verify";
 
+  postInstall = ''
+    # The patch installs build header
+    rm $out/include/reglib/keys-gcrypt.h
+  '';
+
   meta = with stdenv.lib; {
     description = "Linux wireless Central Regulatory Domain Agent";
     longDescription = ''