dwm: support cross-compilation by setting proper CC

+2
+2
pkgs/applications/window-managers/dwm/default.nix
··· 27 27 in 28 28 lib.optionalString (conf != null) "cp ${configFile} config.def.h"; 29 29 30 + makeFlags = [ "CC=${stdenv.cc.targetPrefix}cc" ]; 31 + 30 32 meta = with lib; { 31 33 homepage = "https://dwm.suckless.org/"; 32 34 description = "An extremely fast, small, and dynamic window manager for X";