harmonia: dedupe code with nixos-modules

README.md

@@ -34,6 +34,7 @@ If you want to have an additional backport, cherry-pick or other change, please
 ### nixos-modules repo
 
 The nixos-modules repo lives at <https://github.com/supersandro2000/nixos-modules> and is mirrored to <https://gitea.c3d2.de/c3d2/nixos-modules>.
+Auto generated documentation about all options is available at <https://supersandro2000.github.io/nixos-modules/>.
 It contains options sandro shares between his private nixos configs and the C3D2 one.
 It sets many options by default and when searching for a particular setting you should always grep this repo, too.
 In question ask sandro and consider improving the documentation about this with comments and readme explanations.

hosts/hydra/default.nix

@@ -1,8 +1,5 @@
 { config, lib, libS, pkgs, ... }:
 
-let
-  cachePort = 5000;
-in
 {
   imports = [
     ./hardware-configuration.nix
@@ -155,15 +152,11 @@ in
         '';
     };
 
-    # A rust nix binary cache
     harmonia = {
       enable = true;
-      settings = {
-        bind = "[::]:${toString cachePort}";
-        workers = 20;
-        max_connection_rate = 1024;
-        priority = 50;
-      };
+      domain = "nix-cache.hq.c3d2.de";
+      port = 5000;
+      settings.workers = 20;
       signKeyPath = config.sops.secrets."nix/signing-key/secretKey".path;
     };
 
@@ -182,14 +175,6 @@ in
         "nix-cache.hq.c3d2.de" = {
           forceSSL = true;
           enableACME = true;
-          locations."/" = {
-            proxyPass = "http://127.0.0.1:${toString cachePort}";
-            extraConfig = ''
-              brotli off;
-              gzip off;
-              zstd off;
-            '';
-          };
         };
       };
     };