org-babel-tangle-file failed with nix-mode

[A7R7]

I installed nix-mode with

  (use-package nix-mode
  :mode "\\.nix\\'"
  )

I'm writing nix with org-babel. Whenever I call (org-babel-tangle-file (buffer-file-name)), it errors

error in process sentinel: Symbol’s function definition is void: nix-mode

and the tangle process failed.

However, M-x org-babel-tangle do not have this issue. I use (org-babel-tangle-file (buffer-file-name)) because it's part of org-auto-tangle.

What is probably causing this problem?

[bestlem]

I suspect it is the issue yilkalargaw/org-auto-tangle#24.

I think what is happening is that the async process is running a new emacs process which just has (require "org) and the buffer variables in the init.el of the new process.

Thus it knows nothing about nix-mode.