Install openconnect-sso as overlay

configuration.nix

@@ -111,6 +111,7 @@ with pkgs;
     ./modules/power.nix
     ./overlays/emacs.nix
     ./overlays/nix-direnv.nix
+    ./overlays/openconnect-sso.nix
   ];
 
 }

flake.nix

@@ -14,6 +14,10 @@
     agenix.url = "github:ryantm/agenix";
     agenix.inputs.nixpkgs.follows = "nixpkgs";
     emacs-overlay.url = "github:nix-community/emacs-overlay";
+    openconnect-sso = {
+      url = "github:vlaci/openconnect-sso";
+      flake = false;
+    };
   };
 
   outputs = { self, nixpkgs, agenix, ... }@inputs:

modules/software.nix

@@ -90,6 +90,7 @@ in {
     teams
     # Networking
     openvpn
+    openconnect-sso
     # Programming tools
     ## Shell
     shellcheck

overlays/openconnect-sso.nix

@@ -0,0 +1,3 @@
+{ config, lib, pkgs, inputs, ... }: {
+  nixpkgs.overlays = [ (import "${inputs.openconnect-sso}/overlay.nix") ];
+}