diff --git a/pkgs/applications/virtualization/OVMF/default.nix b/pkgs/applications/virtualization/OVMF/default.nix
index 4f7ea37ca18b..121875a69de7 100644
--- a/pkgs/applications/virtualization/OVMF/default.nix
+++ b/pkgs/applications/virtualization/OVMF/default.nix
@@ -23,6 +23,9 @@ stdenv.mkDerivation (edk2.setup "OvmfPkg/OvmfPkg${targetArch}.dsc" {
   hardeningDisable = [ "stackprotector" "pic" "fortify" ];
 
   unpackPhase = ''
+    # $fd is overwritten during the build
+    export OUTPUT_FD=$fd
+
     for file in \
       "${edk2.src}"/{UefiCpuPkg,MdeModulePkg,IntelFrameworkModulePkg,PcAtChipsetPkg,FatBinPkg,EdkShellBinPkg,MdePkg,ShellPkg,OptionRomPkg,IntelFrameworkPkg};
     do
@@ -51,8 +54,8 @@ stdenv.mkDerivation (edk2.setup "OvmfPkg/OvmfPkg${targetArch}.dsc" {
     '';
 
   postFixup = ''
-    mkdir -p $fd/FV
-    mv $out/FV/OVMF{,_CODE,_VARS}.fd $fd/FV
+    mkdir -vp $OUTPUT_FD/FV
+    mv -v $out/FV/OVMF{,_CODE,_VARS}.fd $OUTPUT_FD/FV
   '';
 
   dontPatchELF = true;
diff --git a/pkgs/games/wesnoth/dev.nix b/pkgs/games/wesnoth/dev.nix
index 0b335812ff03..315f9ea7a5ea 100644
--- a/pkgs/games/wesnoth/dev.nix
+++ b/pkgs/games/wesnoth/dev.nix
@@ -5,13 +5,13 @@
 
 stdenv.mkDerivation rec {
   pname = "wesnoth";
-  version = "1.13.6";
+  version = "1.13.8";
 
   name = "${pname}-${version}";
 
   src = fetchurl {
     url = "mirror://sourceforge/sourceforge/${pname}/${name}.tar.bz2";
-    sha256 = "0z4k2r4ss46ik9fx5clffpd7vfr0l4l6d0j1war676dwz0z1j2m1";
+    sha256 = "0snm4n7l21cr4443rk93wnaqdzr91pihn452w66344zqwf33xgfr";
   };
 
   nativeBuildInputs = [ cmake pkgconfig ];