gnu: xsecurelock: Enable mpv and xscreensaver screen saver modules.

* gnu/packages/xdisorg.scm (xsecurelock)[inputs]: Add xscreensaver and mpv.
[arguments]<#:configure-flags>: Enable their screen saver modules.

Change-Id: I7fa4b7389fa3ea2a852fd87d381c2bd8b7bd0812
Signed-off-by: Hilton Chain <hako@ultrarare.space>
Modified-by: Hilton Chain <hako@ultrarare.space>

gnu/packages/xdisorg.scm

@@ -159,6 +159,7 @@
   #:use-module (gnu packages texinfo)
   #:use-module (gnu packages tcl)
   #:use-module (gnu packages terminals)
+  #:use-module (gnu packages video)
   #:use-module (gnu packages xml)
   #:use-module (gnu packages wm)
   #:use-module (gnu packages webkit)
@@ -2931,7 +2932,12 @@ temperature of the screen.")
       #~(list
          "--with-pam-service-name=login"
          "--with-xkb"
-         "--with-default-authproto-module=/run/privileged/bin/authproto_pam")))
+         "--with-default-authproto-module=/run/privileged/bin/authproto_pam"
+         (string-append "--with-mpv="
+                        #$(this-package-input "mpv") "/bin/mpv")
+         (string-append "--with-xscreensaver="
+                        #$(this-package-input "xscreensaver")
+                        "/libexec/xscreensaver"))))
     (native-inputs
      (list autoconf automake pandoc pkg-config))
     (inputs
@@ -2944,7 +2950,9 @@ temperature of the screen.")
            libxmu
            libxrandr
            libxscrnsaver
-           linux-pam))
+           linux-pam
+           mpv
+           xscreensaver))
     (home-page "https://github.com/google/xsecurelock")
     (synopsis "X11 screen lock utility with the primary goal of security")
     (description