fix: don't add local cache to builder

common/default.nix

@@ -26,7 +26,6 @@
   boot.tmp.useTmpfs = true;
 
   nix = {
-    # Keep a version that works with nix-eval-jobs
     package = pkgs.nixVersions.git.overrideAttrs (oldAttrs: {
       pname = "nix";
       version = "2.21.3";
@@ -107,7 +106,10 @@
       home.packages =
         [
           nix-melt.packages.${pkgs.system}.default
-          nurl.packages.${pkgs.system}.default
+
+          (nurl.packages.${pkgs.system}.default.override {
+            nix = config.nix.package;
+          })
         ]
         ++ (with config.nur.repos.rycee; [
           mozilla-addons-to-nix

common/home/direnv/default.nix

@@ -2,9 +2,10 @@
   programs.direnv = {
     enable = true;
     enableBashIntegration = true;
+
     nix-direnv = {
       enable = true;
-      package = pkgs.nix-direnv-flakes;
+      package = pkgs.nix-direnv;
     };
   };
 }

common/home/packages.nix

@@ -27,5 +27,14 @@
       usbutils
       wget
       zip
-    ]);
+    ])
+    ++ [
+      # This could help as well: nix derivation show -r /run/current-system
+      (pkgs.writeShellApplication {
+        name = "listDerivs";
+        text = ''
+          nix-store --query --requisites /run/current-system | cut -d- -f2- | sort -u
+        '';
+      })
+    ];
 }

common/modules/cachix.nix

@@ -1,8 +1,11 @@
 {
   config,
+  lib,
   pkgs,
   ...
-}: {
+}: let
+  inherit (lib) optionals;
+in {
   environment.systemPackages = [
     (pkgs.writeShellApplication {
       name = "rebuild-no-cache";
@@ -15,22 +18,25 @@
 
   nix = {
     settings = {
-      substituters = [
-        "https://hyprland.cachix.org"
-        "https://nix-gaming.cachix.org"
-        # Nixpkgs-Wayland
-        "https://cache.nixos.org"
-        "https://nixpkgs-wayland.cachix.org"
-        "https://nix-community.cachix.org"
-        # Nix-community
-        "https://nix-community.cachix.org"
-        # Nh
-        "https://viperml.cachix.org"
-        # Caddy
-        "https://caddycf.cachix.org"
-        # Personal config cache
-        "https://cache.nelim.org"
-      ];
+      substituters =
+        [
+          "https://hyprland.cachix.org"
+          "https://nix-gaming.cachix.org"
+          # Nixpkgs-Wayland
+          "https://cache.nixos.org"
+          "https://nixpkgs-wayland.cachix.org"
+          "https://nix-community.cachix.org"
+          # Nix-community
+          "https://nix-community.cachix.org"
+          # Nh
+          "https://viperml.cachix.org"
+          # Caddy
+          "https://caddycf.cachix.org"
+        ]
+        ++ optionals (!config.services.nix-serve.enable) [
+          # Personal config cache
+          "https://cache.nelim.org"
+        ];
       trusted-public-keys = [
         "hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc="
         "nix-gaming.cachix.org-1:nbjlureqMbRAxR1gJ/f3hxemL9svXaZF/Ees8vCUUs4="