switch to ics files; make calendars work; fix some minor issues

flake.nix

@@ -2,7 +2,7 @@
   description = "A flake containing a development environment for the CCCB website.";
 
   inputs = {
-    nixpkgs.url = "github:nixos/nixpkgs/nixos-24.11";
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-26.05";
   };
 
   outputs =
@@ -34,7 +34,7 @@
 
       devShells = forAllSystems (import ./devShells.nix);
 
-      formatter = forAllSystems ({ pkgs, ... }: pkgs.nixfmt-rfc-style);
+      formatter = forAllSystems ({ pkgs, ... }: pkgs.nixfmt-tree);
 
       lib.mkWwwContent =
         { domain, system }:
@@ -50,10 +50,6 @@
           nativeBuildInputs = [
             pkgs.hugo
             pkgs.glibcLocales
-            (pkgs.python3.withPackages (python-pkgs: [
-              python-pkgs.icalendar
-              python-pkgs.pytz
-            ]))
           ];
 
           # LOCALE_ARCHIVE = builtins.trace pkgs.glibcLocales "${pkgs.glibcLocales}/lib/locale/locale-archive";
@@ -62,11 +58,6 @@
           buildPhase = ''
             mkdir -p public
             hugo --baseURL=https://${domain}/
-
-            python3 ./tools/merge_cals.py
-            upcoming="$(python3 tools/gen_upcoming.py static/all.ics 20 5 | tr '\n' ' ')"
-            cp static/all.ics public/all.ics
-            sed -i "s#CALENDAR#$upcoming#g" public/index.html
           '';
 
           # Install phase - copy the public directory to the output