treewide: xvfb_run -> xvfb-run

pkgs/applications/window-managers/i3/default.nix

@@ -1,7 +1,7 @@
 { fetchurl, lib, stdenv, pkg-config, makeWrapper, meson, ninja, installShellFiles, libxcb, xcbutilkeysyms
 , xcbutil, xcbutilwm, xcbutilxrm, libstartup_notification, libX11, pcre, libev
 , yajl, xcb-util-cursor, perl, pango, perlPackages, libxkbcommon
-, xorgserver, xvfb_run }:
+, xorgserver, xvfb-run }:
 
 stdenv.mkDerivation rec {
   pname = "i3";
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
     libstartup_notification libX11 pcre libev yajl xcb-util-cursor perl pango
     perlPackages.AnyEventI3 perlPackages.X11XCB perlPackages.IPCRun
     perlPackages.ExtUtilsPkgConfig perlPackages.InlineC
-    xorgserver xvfb_run
+    xorgserver xvfb-run
   ];
 
   configureFlags = [ "--disable-builddir" ];

pkgs/applications/window-managers/phosh/default.nix

@@ -18,7 +18,7 @@
 , upower
 , wayland
 , dbus
-, xvfb_run
+, xvfb-run
 , phoc
 , feedbackd
 , networkmanager
@@ -98,7 +98,7 @@ in stdenv.mkDerivation rec {
 
   checkInputs = [
     dbus
-    xvfb_run
+    xvfb-run
   ];
 
   # Temporarily disabled - Test is broken (SIGABRT)