backlight: use brightnessctl instead of removed light binary

nixpkgs 26.05 dropped the 'light' package. Switch BacklightService to brightnessctl and bundle it in the wrapper PATH. Bump flake nixpkgs to nixos-26.05.
2026-06-13 15:47:20 +02:00 · 2026-06-13 15:47:20 +02:00 · 0d0a3fd718
commit 0d0a3fd718
parent 628ae67b7d
4 changed files with 9 additions and 7 deletions
--- a/flake.lock
+++ b/flake.lock
@ -17,16 +17,16 @@
    },
    "nixpkgs": {
      "locked": {
-        "lastModified": 1776169885,
-        "narHash": "sha256-l/iNYDZ4bGOAFQY2q8y5OAfBBtrDAaPuRQqWaFHVRXM=",
+        "lastModified": 1780902259,
+        "narHash": "sha256-q8yYEC5f1mFlQO9RGna4LTc9QrcvWunX6FYp83munkQ=",
        "owner": "NixOS",
        "repo": "nixpkgs",
-        "rev": "4bd9165a9165d7b5e33ae57f3eecbcb28fb231c9",
+        "rev": "bd0ff2d3eac24699c3664d5966b9ef36f388e2ca",
        "type": "github"
      },
      "original": {
        "owner": "NixOS",
-        "ref": "nixos-unstable",
+        "ref": "nixos-26.05",
        "repo": "nixpkgs",
        "type": "github"
      }