lib/overlay.nix

@@ -1,25 +1,6 @@
 { self, ... }@inputs:
-myLib: lib:
-let
-  systemDependent = {
-    appendSystem = system: x: "${x}-${system}";
-  };
-in
-{
-
-  inherit systemDependent;
-
-  __functor =
-    self: system:
-    let
-      systemDependent = builtins.mapAttrs (_: v: v system) self.sysDependantFuncs;
-    in
-    self
-    // {
-      inherit systemDependent;
-    }
-    // systemDependent;
 
+myLib: lib: {
   overlay = import ./overlay.nix inputs;
 
   wrench = lib.flip lib.pipe;
@@ -154,4 +135,3 @@ in
       };
 
 }
-// systemDependent

packages/papermc/package.nix

@@ -37,5 +37,16 @@ stdenvNoCC.mkDerivation (finalAttrs: {
   preferLocalBuild = true;
   allowSubstitutes = false;
 
-  meta.mainProgram = "minecraft-server";
+  meta = {
+    description = "High-performance Minecraft Server";
+    homepage = "https://papermc.io/";
+    sourceProvenance = with lib.sourceTypes; [ binaryBytecode ];
+    license = lib.licenses.gpl3Only;
+    platforms = lib.platforms.unix;
+    maintainers = with lib.maintainers; [
+      aaronjanse
+      neonfuz
+    ];
+    mainProgram = "minecraft-server";
+  };
 })