mariadb: fix build in Darwin

pkgs/servers/sql/mariadb/cmake-fix-crypt-libs.patch

@@ -0,0 +1,12 @@
+diff --git a/libmariadb/plugins/auth/CMakeLists.txt b/libmariadb/plugins/auth/CMakeLists.txt
+index aa599418..7a51f73b 100644
+--- a/libmariadb/plugins/auth/CMakeLists.txt
++++ b/libmariadb/plugins/auth/CMakeLists.txt
+@@ -50,6 +50,7 @@ IF(WITH_SSL)
+                         ${REF10_SOURCES}
+                         ${CRYPT_SOURCE}
+                 INCLUDES ${REF10_DIR}
++                LIBRARIES ${ED25519_LIBS}
+                 COMPILE_OPTIONS -DMYSQL_CLIENT=1)
+   IF(MSVC)
+      # Silence conversion (integer truncantion) warnings from reference code

pkgs/servers/sql/mariadb/default.nix

@@ -53,6 +53,7 @@ common = rec { # attributes common to both builds
   patches = [
     ./cmake-includedir.patch
     ./cmake-libmariadb-includedir.patch
+    ./cmake-fix-crypt-libs.patch
   ];
 
   cmakeFlags = [