fix builder stuff

Hetzner/builder.nix

@@ -10,17 +10,32 @@
     substituters = [
       "https://cache.nixos.org"
       "https://cache.axiomania.org/main"
+      "https://axium.cachix.org"
     ];
     trusted-public-keys = [
       "main:Uz5F0MbXItVx2XCmBbEAMmQ0T6+DZDgLaXWalh1k++o="
+      "axium.cachix.org-1:BfzPfRTbbCYmaQrVLSWchgsR4ScA9ZCZ389FyWspUH8="
     ];
   };
 
+  programs.tmux = {
+    enable = true;
+    extraConfig = "set -g mouse on";
+  };
+
   environment.systemPackages = with pkgs; [
     git
     tmux
     attic-client
+    cachix
     vim
     htop
+    curl
+    jq
+    file
+    binutils  # readelf, objdump, nm, strings, size
+    patchelf
+    zip
+    unzip
   ];
 }