anchor.diff:  
     installPhase = ''
       libexec=$out/libexec/virtualbox
  +    share=$out/share/virtualbox
   
       # Install VirtualBox files
       cd out/linux.*/release/bin
  
positive.code:   configurePhase = ''
      sourcedir="$(pwd)"
      cat >> LocalConfig.kmk <<LOCAL_CONFIG
      VBOX_WITH_TESTCASES          :=
      VBOX_WITH_TESTSUITE          :=
      VBOX_WITH_VALIDATIONKIT      :=
      VBOX_WITH_DOCS               :=
      VBOX_WITH_WARNINGS_AS_ERRORS :=
  
      VBOX_WITH_ORIGIN           :=
      VBOX_PATH_APP_PRIVATE_ARCH := $out/libexec/virtualbox
      VBOX_PATH_SHARED_LIBS      := $out/libexec/virtualbox
      VBOX_WITH_RUNPATH          := $out/libexec/virtualbox
      VBOX_PATH_APP_PRIVATE      := $out
      VBOX_PATH_APP_DOCS         := $out/doc
      ${optionalString javaBindings ''
      VBOX_JAVA_HOME             := ${jdk}
      ''}
      LOCAL_CONFIG
  
  
negative.code:     done
  
      ${optionalString enableExtensionPack ''
        mkdir -p "$share"
        "${fakeroot}/bin/fakeroot" "${stdenv.shell}" <<EXTHELPER
        "$libexec/VBoxExtPackHelperApp" install \
          --base-dir "$share/ExtensionPacks" \
          --cert-dir "$share/ExtPackCertificates" \
          --name "Oracle VM VirtualBox Extension Pack" \
          --tarball "${extensionPack}" \
          --sha-256 "${extensionPack.outputHash}"
        EXTHELPER
      ''}
  
      # Create and fix desktop item
  