Merge pull request 'flake.nix: simplify allMachines' (!59) from attrnames into main

Reviewed-on: https://git.pvv.ntnu.no/Drift/pvv-nixos-config/pulls/59
Reviewed-by: Daniel Lovbrotte Olsen <danio@pvv.ntnu.no>

flake.nix

@@ -38,7 +38,7 @@
       "aarch64-darwin"
     ];
     forAllSystems = f: nixlib.genAttrs systems f;
-    allMachines = nixlib.mapAttrsToList (name: _: name) self.nixosConfigurations;
+    allMachines = builtins.attrNames self.nixosConfigurations;
     importantMachines = [
       "bekkalokk"
       "bicep"
@@ -124,6 +124,11 @@
       buskerud = stableNixosConfig "buskerud" { };
     };
 
+    nixosModules = {
+      snakeoil-certs = ./modules/snakeoil-certs.nix;
+      snappymail = ./modules/snappymail.nix;
+    };
+
     devShells = forAllSystems (system: {
       default = nixpkgs.legacyPackages.${system}.callPackage ./shell.nix { };
     });