This neoforge server isn't freaking working

pkgs/forge-servers/default.nix

@@ -0,0 +1,53 @@
+# based on:
+# - https://github.com/Infinidoge/nix-minecraft/blob/ab4790259bf8ed20f4417de5a0e5ee592094c7c3/pkgs/fabric-servers/default.nix
+# - https://github.com/Faeranne/nix-minecraft/blob/f4e4514f1d65b6a19704eab85070741e40c1d272/pkgs/forge-servers/default.nix
+{ callPackage
+, lib
+, jre8_headless
+, jre_headless
+}:
+with lib;
+let
+  loader_versions = lib.importJSON ./lock_launcher.json;
+
+  # Older Minecraft versions that were written for Java 8, required Java 8.
+  # Mojang has since rewritten a lot of their codebase so that Java versions
+  # are no longer as important for stability as they used to be. Meaning we can
+  # target latest the latest JDK for all newer versions of Minecraft.
+  # TODO: Assert that jre_headless >= java version
+  getJavaVersion = v: if v == 8 then jre8_headless else jre_headless;
+
+  # Copied from https://github.com/Infinidoge/nix-minecraft/blob/ab4790259bf8ed20f4417de5a0e5ee592094c7c3/lib/default.nix
+  chain = {
+    func = id;
+    __functor = self: input:
+      if (typeOf input) == "lambda"
+      then self // { func = e: input (self.func e); }
+      else self.func input;
+  };
+
+  escapeVersion = replaceStrings [ "." " " ] [ "_" "_" ];
+
+  isNormalVersion = v: isList (match "([[:digit:]]+\.[[:digit:]]+(\.[[:digit:]]+)?)" v);
+
+  latestVersion = versions: chain
+    (filter isNormalVersion)
+    (sort versionOlder)
+    last
+    (attrNames versions);
+  #####
+
+  mkServer = gameVersion: (callPackage ./server.nix {
+    inherit gameVersion;
+    loaderVersion = latestVersion loader_versions.${gameVersion};
+    jre_headless = getJavaVersion 17;
+    loaderDrv = ./derivation.nix;
+    extraJavaArgs = "-Dlog4j.configurationFile=${./log4j.xml}";
+  });
+
+  gameVersions = attrNames loader_versions;
+
+  packagesRaw = lib.genAttrs gameVersions mkServer;
+  packages = lib.mapAttrs' (version: drv: nameValuePair "forge-${escapeVersion version}" drv) packagesRaw;
+in
+packages