calibre: unbreak, pull in from main nixpkgs again

This reverts commit f9e5a42ca9.

flake.lock

@@ -192,22 +192,6 @@
         "type": "github"
       }
     },
-    "nixos-2405": {
-      "locked": {
-        "lastModified": 1731386116,
-        "narHash": "sha256-lKA770aUmjPHdTaJWnP3yQ9OI1TigenUqVC3wweqZuI=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "689fed12a013f56d4c4d3f612489634267d86529",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixos-24.05",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
     "nixos-hardware": {
       "locked": {
         "lastModified": 1731797098,
@@ -340,7 +324,6 @@
         "lanzaboote": "lanzaboote",
         "mysecrets": "mysecrets",
         "nix-darwin": "nix-darwin",
-        "nixos-2405": "nixos-2405",
         "nixos-hardware": "nixos-hardware",
         "nixos-unstable": "nixos-unstable",
         "nixpkgs": "nixpkgs_2",

flake.nix

@@ -3,7 +3,6 @@
 
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.11";
-    nixos-2405.url = "github:NixOS/nixpkgs/nixos-24.05";
     nixos-unstable.url = "github:NixOS/nixpkgs/nixos-unstable";
     nixos-hardware.url = "github:NixOS/nixos-hardware/master";
     home-manager = {

home/modules/packages.nix

@@ -150,7 +150,7 @@ let
     chromium
     falkon
     thunderbird
-    inputs.nixos-unstable.legacyPackages.${system}.calibre   # FIXME: test failure in 24.11
+    calibre
     dino
     zotero
     ding