scons: Add passthru.py2 for backward compatibility

Not all packages build with Python 3, see #75877. The goal is to get rid
of Python 2 but this approach ensures a smoother transition.

pkgs/applications/audio/jackmix/default.nix

@@ -9,9 +9,8 @@ stdenv.mkDerivation {
 
   patches = [ ./no_error.patch ];
 
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [ scons.py2 pkgconfig ];
   buildInputs = [
-    scons
     qt4
     lash
     jack

pkgs/applications/audio/mixxx/default.nix

@@ -17,10 +17,11 @@ mkDerivation rec {
     sha256 = "1h7q25fv62c5m74d4cn1m6mpanmqpbl2wqbch4qvn488jb2jw1dv";
   };
 
+  nativeBuildInputs = [ scons.py2 ];
   buildInputs = [
     chromaprint fftw flac faad2 glibcLocales mp4v2 libid3tag libmad libopus libshout libsndfile
     libusb1 libvorbis libxcb libGLU lilv lv2 opusfile pkgconfig portaudio portmidi protobuf qtbase qtscript qtsvg
-    qtx11extras rubberband scons sqlite taglib upower vampSDK
+    qtx11extras rubberband sqlite taglib upower vampSDK
   ];
 
   enableParallelBuilding = true;

pkgs/applications/audio/rhvoice/default.nix

@@ -15,7 +15,7 @@ in stdenv.mkDerivation {
   };
 
   nativeBuildInputs = [
-    scons pkgconfig
+    scons.py2 pkgconfig
   ];
 
   buildInputs = [

pkgs/applications/networking/instant-messengers/swift-im/default.nix

@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
 
   patches = [ ./qt-5.11.patch ./scons.patch ];
 
-  nativeBuildInputs = [ pkgconfig qttools scons ];
+  nativeBuildInputs = [ pkgconfig qttools scons.py2 ];
 
   buildInputs = [
     GConf avahi boost hunspell libXScrnSaver libedit libidn libnatpmp libxml2

pkgs/development/libraries/serf/default.nix

@@ -9,7 +9,7 @@ stdenv.mkDerivation rec {
     sha256 = "1k47gbgpp52049andr28y28nbwh9m36bbb0g8p0aka3pqlhjv72l";
   };
 
-  nativeBuildInputs = [ pkgconfig scons ];
+  nativeBuildInputs = [ pkgconfig scons.py2 ];
   buildInputs = [ apr openssl aprutil zlib libiconv ]
     ++ stdenv.lib.optional (!stdenv.isCygwin) kerberos;
 

pkgs/development/libraries/swiften/default.nix

@@ -3,7 +3,7 @@ stdenv.mkDerivation rec {
   pname = "swiften";
   version = "4.0.2";
 
-  nativeBuildInputs = [ scons];
+  nativeBuildInputs = [ scons.py2 ];
   buildInputs           = [ python ];
   propagatedBuildInputs = [ openssl boost ];
 

pkgs/development/tools/build-managers/scons/common.nix

@@ -1,6 +1,6 @@
 { version, sha256 }:
 
-{ stdenv, fetchurl, python3Packages }:
+{ stdenv, fetchurl, python3Packages, python2Packages, scons }:
 
 python3Packages.buildPythonApplication rec {
   pname = "scons";
@@ -13,10 +13,10 @@ python3Packages.buildPythonApplication rec {
 
   setupHook = ./setup-hook.sh;
 
+  passthru.py2 = scons.override { python3Packages = python2Packages; };
+
   meta = with stdenv.lib; {
-    homepage = http://scons.org/;
     description = "An improved, cross-platform substitute for Make";
-    license = licenses.mit;
     longDescription = ''
       SCons is an Open Source software construction tool. Think of
       SCons as an improved, cross-platform substitute for the classic
@@ -25,6 +25,9 @@ python3Packages.buildPythonApplication rec {
       SCons is an easier, more reliable and faster way to build
       software.
     '';
+    homepage = "https://scons.org/";
+    changelog = "https://raw.githubusercontent.com/SConsProject/scons/rel_${version}/src/CHANGES.txt";
+    license = licenses.mit;
     platforms = platforms.all;
     maintainers = [ maintainers.primeos ];
   };

pkgs/development/tools/build-managers/scons/default.nix

@@ -1,12 +1,12 @@
-{ callPackage }:
+{ callPackage, python2Packages }:
 
 let
   mkScons = args: callPackage (import ./common.nix args) { };
 in {
-  scons_3_0_1 = mkScons {
+  scons_3_0_1 = (mkScons {
     version = "3.0.1";
     sha256 = "0wzid419mlwqw9llrg8gsx4nkzhqy16m4m40r0xnh6cwscw5wir4";
-  };
+  }).override { python3Packages = python2Packages; };
   scons_latest = mkScons {
     version = "3.1.2";
     sha256 = "1yzq2gg9zwz9rvfn42v5jzl3g4qf1khhny6zfbi2hib55zvg60bq";

pkgs/development/tools/nsis/default.nix

@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
     chmod -R u+w $out/share/nsis
   '';
 
-  nativeBuildInputs = [ scons ];
+  nativeBuildInputs = [ scons.py2 ];
   buildInputs = [ zlib ];
 
   sconsFlags = [

pkgs/games/pingus/default.nix

@@ -13,8 +13,8 @@ let
 in
 stdenv.mkDerivation {
   inherit (s) name version;
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [ scons.py2 pkgconfig ];
-  buildInputs = [scons SDL SDL_image boost libpng SDL_mixer libGLU libGL];
+  buildInputs = [ SDL SDL_image boost libpng SDL_mixer libGLU libGL];
   src = fetchurl {
     inherit (s) url sha256;
   };

pkgs/games/tdm/default.nix

@@ -24,7 +24,7 @@ in stdenv.mkDerivation {
     sha256 = "17wdpip8zvm2njz0xrf7xcxl73hnsc6i83zj18kn8rnjkpy50dd6";
   };
   nativeBuildInputs = [
-    p7zip scons gnum4 makeWrapper
+    p7zip scons.py2 gnum4 makeWrapper
   ];
   buildInputs = [
     glibc_multi mesa.dev xorg.libX11.dev openal

pkgs/games/vdrift/default.nix

@@ -20,8 +20,8 @@ let
       sha256 = "001wq3c4n9wzxqfpq40b1jcl16sxbqv2zbkpy9rq2wf9h417q6hg";
     };
 
-    nativeBuildInputs = [ pkgconfig ];
+    nativeBuildInputs = [ pkgconfig scons.py2 ];
-    buildInputs = [ scons libGLU libGL SDL2 SDL2_image libvorbis bullet curl gettext ];
+    buildInputs = [ libGLU libGL SDL2 SDL2_image libvorbis bullet curl gettext ];
 
     patches = [ ./0001-Ignore-missing-data-for-installation.patch ];
 

pkgs/misc/drivers/xboxdrv/default.nix

@@ -13,8 +13,8 @@ in stdenv.mkDerivation {
   };
 
   makeFlags = [ "PREFIX=$(out)" ];
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [ pkgconfig scons.py2 ];
-  buildInputs = [ scons libX11 libusb1 boost glib dbus-glib ];
+  buildInputs = [ libX11 libusb1 boost glib dbus-glib ];
   dontUseSconsInstall = true;
 
   meta = with stdenv.lib; {

pkgs/os-specific/linux/ffado/default.nix

@@ -23,7 +23,7 @@ in stdenv.mkDerivation rec {
 
   outputs = [ "out" "bin" "dev" ];
 
-  nativeBuildInputs = [ scons pkgconfig which makeWrapper python pyqt5 ];
+  nativeBuildInputs = [ scons.py2 pkgconfig which makeWrapper python pyqt5 ];
 
   prefixKey = "PREFIX=";
   sconsFlags = [

pkgs/servers/gpsd/default.nix

@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [
-    scons pkgconfig docbook_xml_dtd_412 docbook_xsl xmlto bc
+    scons.py2 pkgconfig docbook_xml_dtd_412 docbook_xsl xmlto bc
     python2Packages.python
     python2Packages.wrapPython
   ];

pkgs/servers/nosql/mongodb/default.nix

@@ -29,7 +29,7 @@ in stdenv.mkDerivation {
     sha256 = "1wz2mhl9z0b1bdkg6m8v8mvw9k60mdv5ybq554xn3yjj9z500f24";
   };
 
-  nativeBuildInputs = [ scons ];
+  nativeBuildInputs = [ scons.py2 ];
   buildInputs = [
     sasl boost gperftools pcre-cpp snappy
     zlib libyamlcpp sasl openssl.dev openssl.out libpcap

pkgs/tools/misc/gringo/default.nix

@@ -16,7 +16,7 @@ stdenv.mkDerivation {
     sha256 = "16k4pkwyr2mh5w8j91vhxh9aff7f4y31npwf09w6f8q63fxvpy41";
   };
 
-  buildInputs = [ bison re2c scons ];
+  buildInputs = [ bison re2c scons.py2 ];
 
   patches = [
     ./gringo-4.5.4-cmath.patch