build/nix: Missing `libcap` dependency

I am trying to build using nix but libcap is missing. I've verified that adding the patch below is enough

diff --git a/flake.nix b/flake.nix
index 1fd41c6f1..5aca004b8 100644
--- a/flake.nix
+++ b/flake.nix
@@ -72,6 +72,7 @@
               pkgs.cmake
               pkgs.llvmPackages.clang
               pkgs.llvmPackages.libclang.lib
+              pkgs.libcap
             ];
             PKG_CONFIG_PATH = "${pkgs.openssl.dev}/lib/pkgconfig";
             LIBCLANG_PATH = "${pkgs.llvmPackages.libclang.lib}/lib";