enable aarch64-linux cross compilation for entropia pi

Flake lock file updates:

• Updated input 'home-manager':
    'github:nix-community/home-manager/f8af2cbe386f9b96dd9efa57ab15a09377f38f4d?narHash=sha256-ib1Xi13NEalrFqQAHceRsb%2B6aIPANFuQq80SS/bY10M%3D' (2025-08-18)
  → 'github:nix-community/home-manager/9e3a33c0bcbc25619e540b9dfea372282f8a9740?narHash=sha256-J1i35r4HfNDdPpwL0vOBaZopQudAUVtartEerc1Jryc%3D' (2025-08-24)
• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/fbcf476f790d8a217c3eab4e12033dc4a0f6d23c?narHash=sha256-wNO3%2BKs2jZJ4nTHMuks%2BcxAiVBGNuEBXsT29Bz6HASo%3D' (2025-08-14)
  → 'github:nixos/nixpkgs/20075955deac2583bb12f07151c2df830ef346b4?narHash=sha256-HMwfAJBdrr8wXAkbGhtcby1zGFvs%2BStOp19xNsbqdOg%3D' (2025-08-19)

configuration.nix

@@ -26,6 +26,8 @@
 
   boot.supportedFilesystems = [ "nfs" ];
 
+  boot.binfmt.emulatedSystems = [ "aarch64-linux" ];
+
   services.hardware.bolt.enable = true;
 
   networking.hostName = "nixpad"; # Define your hostname.

flake.lock

@@ -7,11 +7,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1755491080,
+        "lastModified": 1756022458,
-        "narHash": "sha256-ib1Xi13NEalrFqQAHceRsb+6aIPANFuQq80SS/bY10M=",
+        "narHash": "sha256-J1i35r4HfNDdPpwL0vOBaZopQudAUVtartEerc1Jryc=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "f8af2cbe386f9b96dd9efa57ab15a09377f38f4d",
+        "rev": "9e3a33c0bcbc25619e540b9dfea372282f8a9740",
         "type": "github"
       },
       "original": {
@@ -22,11 +22,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1755186698,
+        "lastModified": 1755615617,
-        "narHash": "sha256-wNO3+Ks2jZJ4nTHMuks+cxAiVBGNuEBXsT29Bz6HASo=",
+        "narHash": "sha256-HMwfAJBdrr8wXAkbGhtcby1zGFvs+StOp19xNsbqdOg=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "fbcf476f790d8a217c3eab4e12033dc4a0f6d23c",
+        "rev": "20075955deac2583bb12f07151c2df830ef346b4",
         "type": "github"
       },
       "original": {