feat: enable jobserver and cores = 0;

Signed-off-by: Raito Bezarius <masterancpp@gmail.com>

modules/nix-daemon.nix

@@ -30,6 +30,9 @@ in
       { domain = "*"; item = "nofile"; type = "-"; value = "20480"; }
     ];
 
+    # Makes the computer go faster.
+    nixos.jobserver.enable = true;
+
     # Memory accounting techniques
     systemd.services.nix-daemon.serviceConfig = {
       MemoryAccounting = true;
@@ -63,7 +66,7 @@ in
         use-cgroups = true;
         http-connections = 0;
         auto-allocate-uids = true;
-        cores = 64; # 128 is too much, it will explode the RAM for now. Let's keep it serious.
+        cores = 0;
         max-jobs = 2; # Do not build more than 2 derivations at once in the event, both of them are too big, yes this is stupid, fix it in Nix.
         fsync-metadata = true;
         substituters = [