argyllcms: make reproducible

and make binfmt cross-compilable

pkgs/tools/graphics/argyllcms/default.nix

@@ -13,6 +13,14 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-umY3wQfG26Okqnw+MCUnlwWTAyJ6MR/FHe5oe61KBh0=";
   };
 
+  nativeBuildInputs = [ jam unzip ];
+
+  postPatch = lib.optionalString (stdenv.hostPlatform != stdenv.buildPlatform) ''
+    substituteInPlace Jambase \
+      --replace "-m64" ""
+  '';
+
+  preConfigure = let
     # The contents of this file comes from the Jamtop file from the
     # root of the ArgyllCMS distribution, rewritten to pick up Nixpkgs
     # library paths. When ArgyllCMS is updated, make sure that changes
@@ -80,16 +88,13 @@ stdenv.mkDerivation rec {
         -ldl -lrt -lX11 -lXext -lXxf86vm -lXinerama -lXrandr -lXau -lXdmcp -lXss
         -ljpeg -ltiff -lpng -lssl ;
     '';
-
-  nativeBuildInputs = [ jam unzip ];
-
-  preConfigure = ''
+  in ''
     cp ${jamTop} Jamtop
     substituteInPlace Makefile --replace "-j 3" "-j $NIX_BUILD_CORES"
     # Remove tiff, jpg and png to be sure the nixpkgs-provided ones are used
     rm -rf tiff jpg png
 
-    unset AR
+    export AR="$AR rusc"
   '';
 
   buildInputs = [
@@ -110,6 +115,9 @@ stdenv.mkDerivation rec {
     mkdir -p $out/etc/udev/rules.d
     sed -i '/udev-acl/d' usb/55-Argyll.rules
     cp -v usb/55-Argyll.rules $out/etc/udev/rules.d/
+
+    sed -i -e 's/^CREATED .*/CREATED "'"$(date -d @$SOURCE_DATE_EPOCH)"'"/g' $out/share/argyllcms/RefMediumGamut.gam
+
   '';
 
   meta = with lib; {