g_object_newv is deprecated starting in glib 2.54

Installing https://luarocks.org/lgi-0.9.2-1.src.rock
/Applications/Xcode-beta.app/Contents/Developer/usr/bin/make -C lgi
pkg-config --exists 'gobject-introspection-1.0 >= 0.10.8' --print-errors
touch .depcheck
env MACOSX_DEPLOYMENT_TARGET=10.8 /usr/bin/clang -fno-common  -O2 -fPIC -I/opt/local/include -D_REENTRANT -I/opt/local/include/gobject-introspection-1.0 -I/opt/local/include/glib-2.0 -I/opt/local/lib/glib-2.0/include -I/opt/local/include -I/opt/local/lib/libffi-3.2.1/include -Wall -Wextra -O2 -g -DGOBJECT_INTROSPECTION_LIBDIR=\"/opt/local/lib\" -c -o buffer.o buffer.c
env MACOSX_DEPLOYMENT_TARGET=10.8 /usr/bin/clang -fno-common  -O2 -fPIC -I/opt/local/include -D_REENTRANT -I/opt/local/include/gobject-introspection-1.0 -I/opt/local/include/glib-2.0 -I/opt/local/lib/glib-2.0/include -I/opt/local/include -I/opt/local/lib/libffi-3.2.1/include -Wall -Wextra -O2 -g -DGOBJECT_INTROSPECTION_LIBDIR=\"/opt/local/lib\" -c -o callable.o callable.c
env MACOSX_DEPLOYMENT_TARGET=10.8 /usr/bin/clang -fno-common  -O2 -fPIC -I/opt/local/include -D_REENTRANT -I/opt/local/include/gobject-introspection-1.0 -I/opt/local/include/glib-2.0 -I/opt/local/lib/glib-2.0/include -I/opt/local/include -I/opt/local/lib/libffi-3.2.1/include -Wall -Wextra -O2 -g -DGOBJECT_INTROSPECTION_LIBDIR=\"/opt/local/lib\" -c -o core.o core.c
env MACOSX_DEPLOYMENT_TARGET=10.8 /usr/bin/clang -fno-common  -O2 -fPIC -I/opt/local/include -D_REENTRANT -I/opt/local/include/gobject-introspection-1.0 -I/opt/local/include/glib-2.0 -I/opt/local/lib/glib-2.0/include -I/opt/local/include -I/opt/local/lib/libffi-3.2.1/include -Wall -Wextra -O2 -g -DGOBJECT_INTROSPECTION_LIBDIR=\"/opt/local/lib\" -c -o gi.o gi.c
env MACOSX_DEPLOYMENT_TARGET=10.8 /usr/bin/clang -fno-common  -O2 -fPIC -I/opt/local/include -D_REENTRANT -I/opt/local/include/gobject-introspection-1.0 -I/opt/local/include/glib-2.0 -I/opt/local/lib/glib-2.0/include -I/opt/local/include -I/opt/local/lib/libffi-3.2.1/include -Wall -Wextra -O2 -g -DGOBJECT_INTROSPECTION_LIBDIR=\"/opt/local/lib\" -c -o marshal.o marshal.c
env MACOSX_DEPLOYMENT_TARGET=10.8 /usr/bin/clang -fno-common  -O2 -fPIC -I/opt/local/include -D_REENTRANT -I/opt/local/include/gobject-introspection-1.0 -I/opt/local/include/glib-2.0 -I/opt/local/lib/glib-2.0/include -I/opt/local/include -I/opt/local/lib/libffi-3.2.1/include -Wall -Wextra -O2 -g -DGOBJECT_INTROSPECTION_LIBDIR=\"/opt/local/lib\" -c -o object.o object.c
object.c:576:34: warning: 'g_object_newv' is deprecated [-Wdeprecated-declarations]
      return lgi_object_2lua (L, g_object_newv (gtype, size, params),
                                 ^
/opt/local/include/glib-2.0/gobject/gobject.h:427:1: note: 'g_object_newv' has been explicitly marked deprecated here
GLIB_DEPRECATED_IN_2_54_FOR(g_object_new_with_properties)
^
/opt/local/include/glib-2.0/glib/gversionmacros.h:487:49: note: expanded from macro 'GLIB_DEPRECATED_IN_2_54_FOR'
# define GLIB_DEPRECATED_IN_2_54_FOR(f)         GLIB_DEPRECATED_FOR(f)
                                                ^
/opt/local/include/glib-2.0/glib/gmacros.h:432:32: note: expanded from macro 'GLIB_DEPRECATED_FOR'
#define GLIB_DEPRECATED_FOR(f) G_DEPRECATED_FOR(f) _GLIB_EXTERN
                               ^
/opt/local/include/glib-2.0/glib/gmacros.h:405:29: note: expanded from macro 'G_DEPRECATED_FOR'
#define G_DEPRECATED_FOR(f) G_DEPRECATED
                            ^
/opt/local/include/glib-2.0/glib/gmacros.h:393:37: note: expanded from macro 'G_DEPRECATED'
#define G_DEPRECATED __attribute__((__deprecated__))
                                    ^
1 warning generated.
env MACOSX_DEPLOYMENT_TARGET=10.8 /usr/bin/clang -fno-common  -O2 -fPIC -I/opt/local/include -D_REENTRANT -I/opt/local/include/gobject-introspection-1.0 -I/opt/local/include/glib-2.0 -I/opt/local/lib/glib-2.0/include -I/opt/local/include -I/opt/local/lib/libffi-3.2.1/include -Wall -Wextra -O2 -g -DGOBJECT_INTROSPECTION_LIBDIR=\"/opt/local/lib\" -c -o record.o record.c
env MACOSX_DEPLOYMENT_TARGET=10.8 /usr/bin/clang -bundle -undefined dynamic_lookup -all_load  -o corelgilua51.so buffer.o callable.o core.o gi.o marshal.o object.o record.o -L/opt/local/lib -lgirepository-1.0 -lgobject-2.0 -lgmodule-2.0 -lglib-2.0 -lintl -Wl,-framework -Wl,CoreFoundation -lffi
echo "return '0.9.2'" > version.lua
/Applications/Xcode-beta.app/Contents/Developer/usr/bin/make -C lgi install
mkdir -p /opt/local/share/luarocks/lib/luarocks/rocks/lgi/0.9.2-1/lib/lgi
cp corelgilua51.so /opt/local/share/luarocks/lib/luarocks/rocks/lgi/0.9.2-1/lib/lgi
mkdir -p /opt/local/share/luarocks/lib/luarocks/rocks/lgi/0.9.2-1/lua
cp ../lgi.lua /opt/local/share/luarocks/lib/luarocks/rocks/lgi/0.9.2-1/lua
mkdir -p /opt/local/share/luarocks/lib/luarocks/rocks/lgi/0.9.2-1/lua/lgi
cp class.lua component.lua core.lua enum.lua ffi.lua init.lua log.lua namespace.lua package.lua record.lua version.lua /opt/local/share/luarocks/lib/luarocks/rocks/lgi/0.9.2-1/lua/lgi
mkdir -p /opt/local/share/luarocks/lib/luarocks/rocks/lgi/0.9.2-1/lua/lgi/override
cp override/Clutter.lua override/GLib-Bytes.lua override/GLib-Error.lua override/GLib-Markup.lua override/GLib-Source.lua override/GLib-Timer.lua override/GLib-Variant.lua override/GLib.lua override/GObject-Closure.lua override/GObject-Object.lua override/GObject-Type.lua override/GObject-Value.lua override/Gdk.lua override/Gio-DBus.lua override/Gio.lua override/GooCanvas.lua override/Gst.lua override/Gtk.lua override/Pango.lua override/PangoCairo.lua override/cairo.lua /opt/local/share/luarocks/lib/luarocks/rocks/lgi/0.9.2-1/lua/lgi/override
lgi 0.9.2-1 is now installed in /opt/local/share/luarocks (license: MIT/X11)

Start in object.c around line 576, where g_object_newv triggers the GLib deprecation warning, and review the surrounding object-construction path. Reproduce the build with the shown GLib-based compiler setup, then verify that the warning is resolved without changing object creation behavior.