gnome: fix compilation with gcc 11.3.0

A new warning (`-Werror=overlength-strings`) is causing issues due to
a recent gcc version upgrade

pkgs/desktops/gnome/apps/cheese/default.nix

@@ -80,6 +80,8 @@ stdenv.mkDerivation rec {
     pipewire # PipeWire provides a gstreamer plugin for using PipeWire for video
   ];
 
+  NIX_CFLAGS_COMPILE = "-Wno-error=overlength-strings";
+
   postPatch = ''
     chmod +x meson_post_install.py
     patchShebangs meson_post_install.py

pkgs/desktops/gnome/apps/gnome-maps/default.nix

@@ -69,6 +69,8 @@ stdenv.mkDerivation rec {
     webkitgtk
   ];
 
+  NIX_CFLAGS_COMPILE = "-Wno-error=overlength-strings";
+
   postPatch = ''
     chmod +x meson_post_install.py # patchShebangs requires executable file
     patchShebangs meson_post_install.py

pkgs/desktops/gnome/apps/gnome-music/default.nix

@@ -76,6 +76,8 @@ python3.pkgs.buildPythonApplication rec {
     gst-plugins-ugly
   ]);
 
+  NIX_CFLAGS_COMPILE = "-Wno-error=overlength-strings";
+
   pythonPath = with python3.pkgs; [
     pycairo
     dbus-python

pkgs/desktops/gnome/core/gnome-shell/default.nix

@@ -175,6 +175,8 @@ stdenv.mkDerivation rec {
     pythonEnv
   ];
 
+  NIX_CFLAGS_COMPILE = "-Wno-error=overlength-strings";
+
   mesonFlags = [
     "-Dgtk_doc=true"
   ];

pkgs/desktops/gnome/core/totem/default.nix

@@ -77,6 +77,8 @@ stdenv.mkDerivation rec {
     xvfb-run
   ];
 
+  NIX_CFLAGS_COMPILE = "-Wno-error=overlength-strings";
+
   mesonFlags = [
     # TODO: https://github.com/NixOS/nixpkgs/issues/36468
     "-Dc_args=-I${glib.dev}/include/gio-unix-2.0"