Sometimes powerline does not load

[trishume]

Some types of file opening don't load the powerline after startup. I think this is caused by over-zealous lazy loading. This only happens for certain file types, which leads me to suspect it is something to do with less-fancy major modes not trying to modify the modeline and thus not calling the hooks that lazy-load powerline.

It happens when loading files in any way and for certain types including: directories, .plist files, some other things I don't remember.

Reproducible Steps

• Start spacemacs
• Open a directory with emacsclient (or any other method)
• Modeline is blank

If this is due to lazy loading, this could potentially be fixed by not lazy-loading powerline. This makes sense since when would you ever start emacs and do a bunch of actions where you want none of them to have a powerline?

Error Messages

Note in the second message it mentions some flycheck-mode thing being void. This makes me suspect it is a lazy loading problem, and that this issue happens for any file type that flycheck does not support.

This is this error I get in messages after startup:

Eager macro-expansion failure: (error "Autoloading failed to define function defpowerline")
Error: (file-error "Cannot open load file" "no such file or directory" "powerline")
Error: (file-error "Cannot open load file" "no such file or directory" "tex-site")

And then this error after loading one of the aforementioned file types:

Error during redisplay: (eval (let* ((active (powerline-selected-window-active)) (line-face (if active (quote mode-line) (quote mode-line-inactive))) (face1 (if active (quote powerline-active1) (quote powerline-inactive1))) (face2 (if active (quote powerline-active2) (quote powerline-inactive2))) (state-face (if active (spacemacs/current-state-face) face2)) (flycheckp (and spacemacs-mode-line-flycheckp (symbolp flycheck-mode) (symbol-value flycheck-mode) (or flycheck-current-errors (eq (quote running) flycheck-last-status-change)))) (vc-face (if (or flycheckp spacemacs-mode-line-minor-modesp) face1 line-face)) (separator-left (intern (format "powerline-%s-%s" powerline-default-separator (car powerline-default-separator-dir)))) (separator-right (intern (format "powerline-%s-%s" powerline-default-separator (cdr powerline-default-separator-dir)))) (lhs (append (list (powerline-raw (spacemacs/window-number) state-face)) (if anzu--state (list (funcall separator-right state-face face1) (powerline-raw (anzu--update-mode-line) face1) (funcall separator-right face1 line-face)) (list (funcall separator-right state-face line-face))) (list (powerline-raw "%*" line-face (quote l)) (powerline-buffer-size line-face (quote l)) (powerline-buffer-id line-face (quote l)) (powerline-raw " " line-face) (funcall separator-left line-face face1) (powerline-major-mode face1 (quote l)) (powerline-raw " " face1) (funcall separator-right face1 line-face)) (if flycheckp (list (powerline-raw " " line-face) (powerline-raw (spacemacs//custom-flycheck-lighter error) (quote spacemacs-mode-line-error-face)) (powerline-raw (spacemacs//custom-flycheck-lighter warning) (quote spacemacs-mode-line-warning-face)) (powerline-raw (spacemacs//custom-flycheck-lighter info) (quote spacemacs-mode-line-info-face)))) (if (and flycheckp spacemacs-mode-line-minor-modesp) (list (funcall separator-left line-face face1) (powerline-raw "  " face1) (funcall separator-right face1 line-face))) (if spacemacs-mode-line-minor-modesp (list (powerline-minor-modes line-face (quote l)) (powerline-raw mode-line-process line-face (quote l)) (powerline-raw " " line-face))) (if (or flycheckp spacemacs-mode-line-minor-modesp) (list (funcall separator-left (if vc-face line-face face1) vc-face))) (list (powerline-vc vc-face) (powerline-raw " " vc-face) (funcall separator-right vc-face face2)))) (rhs (list (funcall separator-right face2 face1) (powerline-raw " " face1) (powerline-raw "%l:%2c" face1 (quote r)) (funcall separator-left face1 line-face) (powerline-raw " " line-face) (powerline-raw "%p" line-face (quote r)) (powerline-chamfer-left line-face face1) (let ((progress (format-mode-line "%p"))) (if (string-match "%" progress) (powerline-hud state-face face1)))))) (concat (powerline-render lhs) (powerline-fill face2 (powerline-width rhs)) (powerline-render rhs)))) signaled (void-variable flycheck-mode)

[syl20bnr]

Thank you for the detailed description of the issue. I think I fixed it with this commit 0144604, can you pull it and let me know if you can reproduce it ?

[syl20bnr]

@trishume Just did the repo steps and the Eager macro-expansion error is still here.

[syl20bnr]

I reinstalled the powerline package by deleting it in elpa folder and I restarted Emacs. The issue is gone.
Do you have 24.4 and 23.4 installed ?
I'm moving on 24.4 so maybe the byte-compiled version from 24.3 was not fully compatible.

Tell me if reinstalling/recompiling the powerline package did the trick for you too.

[trishume]

I pulled the latest code and that fixed the modeline problems. I also reinstalled powerline and that fixed the startup error.

Thanks!

[syl20bnr]

Great I close this one so.