Third-party function overrides my customized variable and my mode hook

In the spacemace python layer, the following function overrides my customizations for the variable company-minimum-prefix-length python layer

(defun python/post-init-company () ;; backend specific (add-hook 'python-mode-local-vars-hook #'spacemacs//python-setup-company) (spacemacs|add-company-backends :backends (company-files company-capf) :modes inferior-python-mode :variables company-minimum-prefix-length 0 company-idle-delay 0.5) (when (configuration-layer/package-used-p 'pip-requirements) (spacemacs|add-company-backends :backends company-capf :modes pip-requirements-mode))) 

I've tried setting this variable to 2 with a mode hook as well as by using M-x customize

This hook in my init file has zero effect (maybe I'm doing something wrong):

 (add-hook 'inferior-python-mode-hook (lambda () (setq-local company-minimum-prefix-length 2))) 

M-x customize-variable also has zero effect in the python buffer although it works in other buffers. After save and apply in the customize-variable buffer M-x describe-variable yields this:

Its value is 0 Original value was 3 Local in buffer *Python*; global value is 2 The minimum prefix length for idle completion. Automatically becomes buffer-local when set. You can customize this variable. [back] 

The only way I can change the variable is by using M-x set-variable after the buffer loads. This change is overridden if I restart the buffer with M-x python-shell-restart. Is there any way I can write a hook that will set the variable after all other mode hooks?