cannot autoload julia-snail

[nesteiner]

maybe is the problem of my program ability on emacs-lisp, when I type this code, julia-snail can't autoload when loading a julia file

(use-package julia-mode
  :config
  (setq julia-repl-switches nil
    julia-snail-extra-args nil
    julia-indent-offset 2)
  :commands julia-snail-mode)

(use-package julia-snail
  :ensure t
  :after julia-mode
  :requires vterm
  :hook (julia-mode-hook . julia-snail-mode)
  :config
  (setq-default julia-snail-extra-args "--sysimage /home/steiner/.julia-images/julia-dev.so"))

I remember that it was ok, after i use byte compile emacs-lisp file, it does not work since then

[gcv]

How large is the julia-snail.elc byte-compiled file? Sometimes the byte compiler does not compile the whole file. If it’s only a few hundred bytes, delete it, make sure vterm is fully loaded (M-x vterm), and recompile julia-snail.el.

[nesteiner]

still not work,
does that work on your system ?

[gcv]

Is init-julia.el the file with your use-package forms? Please post the size of your julia-snail.el* files. Let’s first make sure the Snail installation is not broken.

[nesteiner]

[gcv]

That's still an init-julia.el file. I'm asking for ls -la output of your Snail installation directory, not your configuration code.

[nesteiner]

here you are ![Uploading 2022-02-01 01-49-46 的屏幕截图.png…]()

[gcv]

There's nothing attached to your message.

[nesteiner]

[gcv]

That's the installation directory. I want to see the files inside it, specifically the julia-snail.elc file.

[nesteiner]

[gcv]

Your installation looks good.

Can you post the values of julia-mode-hook both when you do and do not have the byte-compiled init-julia file available? I want to understand if the byte compiler is messing something up for your configuration file.

[nesteiner]

both hook are the same like this, maybe it the problem of my configuration code ?

[nesteiner]

holy shit, this code works !

(use-package julia-mode
  :hook (julia-mode . julia-snail-mode)
  :config
  (setq julia-repl-switches nil
    julia-snail-extra-args nil
    julia-indent-offset 2)
  :commands julia-snail-mode)

I think I have took you too much time

[gcv]

Very interesting. You're the second person to report this problem and this exact workaround (see #70). For completeness and so I can look into this later, what version of Emacs are you using? What OS? Do you have native compilation enabled?

[nesteiner]

maybe we are not so familiar with emacs-lisp, I think the major mode once loaded, so that its hook can be called.

[gcv]

What we don't understand is use-package. I managed to reproduce the problem you reported. Remove :requires vterm from your original example, and it should work.

It looks like this bug occurs because of :requires: https://github.com/jwiegley/use-package#prevent-loading-if-dependencies-are-missing — so if your (use-package vterm) form is not evaluated first, even if the vterm package is installed, julia-snail is not loaded. It looks like your case and #70 both happened because of this.

I'll update the Snail README and remove :requires vterm and see if that causes a separate set of problems.

[nesteiner]

@gcv hey I think I found the problem, using this code

(use-package julia-snail
  :ensure t
  :after julia-mode
  :requires vterm
  :config
  (setq-default julia-snail-extra-args "--sysimage /home/steiner/.julia-images/julia-dev.so")
  (setq julia-snail-executable "/usr/local/bin/julia"))

and I found that when load julia file, watching the local varibale and the julia-snail-extra-args is nil, so I think this code is not loaded at all

[nesteiner]

how about trying this code, and check the local buffer variable, you will find out

[gcv]

You need to remove requires :vterm from there. I discovered this upthread: https://github.com/gcv/julia-snail/issues/75#issuecomment-1026930872