munge: use openssl instead of libgcrypt (#563841)

pkgs/by-name/mu/munge/package.nix

@@ -3,7 +3,7 @@
   stdenv,
   fetchFromGitHub,
   autoreconfHook,
-  libgcrypt,
+  openssl,
   zlib,
   bzip2,
   nixosTests,
@@ -28,11 +28,10 @@ stdenv.mkDerivation (finalAttrs: {
 
   nativeBuildInputs = [
     autoreconfHook
-    libgcrypt # provides libgcrypt.m4
   ];
 
   buildInputs = [
-    libgcrypt
+    openssl
     zlib
     bzip2
   ];
@@ -50,8 +49,7 @@ stdenv.mkDerivation (finalAttrs: {
     "--with-pkgconfigdir=${placeholder "out"}/lib/pkgconfig"
     "--with-systemdunitdir=${placeholder "out"}/lib/systemd/system"
 
-    # Cross-compilation hacks
-    "--with-libgcrypt-prefix=${lib.getDev libgcrypt}"
+    "--with-crypto-lib=openssl"
     # workaround for cross compilation: https://github.com/dun/munge/issues/103
     "ac_cv_file__dev_spx=no"
     "x_ac_cv_check_fifo_recvfd=no"