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Debug failed Emacs initialization

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My newly minted macro for defining monitors introduced two bugs:
1. Laptop defined its position in terms of 4k-horizontal and 4k-horizontal
   defined its position in terms of laptop, I introduced a circular dependency.
2. The identifier, `laptop-monitor`, which `window-manager.el` depends on, is
   now defined as `laptop`.

A friendly reminder to myself to always test new Emacs builds to make sure that
everything can initialize properly. This is something that my CI should be
automating, but ever since I moved flats, I lost my CI and need to restore it.

This is another reminder to drop into a TTY when Emacs fails to initialize, run
`nix-env --rollback`, then attempt to restart X. But this time, debugging this
entirely from a TTY wasn't so disappointing.
This commit is contained in:
William Carroll 2020-09-29 10:10:24 +01:00
parent e41ca803c6
commit fc0c795c4e
2 changed files with 9 additions and 4 deletions
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11
emacs/.emacs.d/wpc/display.el
View file

@ -54,10 +54,14 @@ See the man-page for xrandr for more details."
(prelude-start-process (prelude-start-process
:name ,(format "display-enable-%s" name) :name ,(format "display-enable-%s" name)
:command ,(format :command ,(format
"xrandr --output %s --%s --%s %s --auto --size %dx%d --rate %0.2f --dpi %d --rotate %s" "xrandr --output %s --%s %s --auto --size %dx%d --rate %0.2f --dpi %d --rotate %s"
output output
(if primary "primary" "noprimary") (if primary "primary" "noprimary")
(car position) (eval (cadr position)) (if position
(format "--%s %s"
(car position)
(eval (cadr position)))
"")
(car size) (cadr size) (car size) (cadr size)
rate rate
dpi dpi
@ -71,10 +75,11 @@ See the man-page for xrandr for more details."
"xrandr --output %s --off" "xrandr --output %s --off"
output))))) output)))))
;; I'm omitting the position argument to avoid a circular dependency between
;; laptop and 4k-horizontal.
(display-register laptop (display-register laptop
:output "eDP1" :output "eDP1"
:primary nil :primary nil
:position (below display-4k-horizontal)
:size (3840 2160) :size (3840 2160)
:rate 30.0 :rate 30.0
:dpi 144 :dpi 144

2
emacs/.emacs.d/wpc/window-manager.el
View file

@ -103,7 +103,7 @@
(exwm-randr-enable) (exwm-randr-enable)
(setq exwm-randr-workspace-monitor-plist (setq exwm-randr-workspace-monitor-plist
(list 0 display-4k-horizontal (list 0 display-4k-horizontal
1 display-laptop-monitor 1 display-laptop
2 display-4k-vertical)) 2 display-4k-vertical))
(evil-set-initial-state 'exwm-mode 'emacs) (evil-set-initial-state 'exwm-mode 'emacs)