Firefox has been decoupled from the system certificate store since the nss p11-kit integration in combination with our cacert package does not expose CKA_NSS_MOZILLA_CA_POLICY, which among other things is required for addon updates. (cherry picked from commit 2d4ed9bae6f9c80d75cf5ef18ccdac85cf889ff3)
*** NixOS *** NixOS is a Linux distribution based on the purely functional package management system Nix. More information can be found at https://nixos.org/nixos and in the manual in doc/manual.