nixos: upgrade to 25.05

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/ebe2788eafd539477f83775ef93c3c7e244421d3' (2025-03-10)
  → 'github:NixOS/nixpkgs/b2485d56967598da068b5a6946dadda8bfcbcd37' (2025-06-20)

2 files changed, 8 insertions, 8 deletions

diff --git a/flake.lock b/flake.lock
index 2592fde..240db72 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,16 +2,16 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1741600792,
-        "narHash": "sha256-yfDy6chHcM7pXpMF4wycuuV+ILSTG486Z/vLx/Bdi6Y=",
+        "lastModified": 1750400657,
+        "narHash": "sha256-3vkjFnxCOP6vm5Pm13wC/Zy6/VYgei/I/2DWgW4RFeA=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "ebe2788eafd539477f83775ef93c3c7e244421d3",
+        "rev": "b2485d56967598da068b5a6946dadda8bfcbcd37",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-24.11",
+        "ref": "nixos-25.05",
         "repo": "nixpkgs",
         "type": "github"
       }
diff --git a/flake.nix b/flake.nix
index f127bc8..6568534 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,6 +1,6 @@
 {
   description = "Minimal NixOS installation media";
-  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.11";
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05";
   outputs = {
     self,
     nixpkgs,
@@ -34,10 +34,10 @@
             "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIEvPsKWQXX/QsFQjJU0CjG4LllvUVZme45d9JeS/yhLt qaristote@precision-3571"
           ];
 
-          time.time = "Europe/Paris";
+          time.timeZone = "Europe/Paris";
           i18n = {
-            defaultLocal = "fr_FR.utf8";
-            extraLocaleSettings.LANG = "en_US.utf8";
+            defaultLocale = "fr_FR.UTF-8";
+            extraLocaleSettings.LANG = "en_US.UTF-8";
           };
           console = {
             "font" = "Lat2-Terminus32";