feat!(cli): load project .doomrc instead of ci.el

BREAKING CHANGE: Before, 'doom ci' would load
$GIT_WORKING_TREE/.github/ci.el, to give users/projects an opportunity
to provide project-local configuration for bin/doom (mainly for CI/CD).
Now, this ci.el file is no longer loaded and instead, *all* bin/doom
sessions will walk up the file tree and load the first .doomrc it finds.

This gives bin/doom users a more general place configure all of its
commands, and not just 'doom ci' commands.

Extras:
- Adds .doomrc to auto-mode-alist (so that it starts in
  emacs-lisp-mode).

.doomrc

@@ -1,6 +1,7 @@
-;;; ci.el -*- lexical-binding: t; no-byte-compile: t; -*-
+;;; .doomrc --- doom runtime config -*- mode: emacs-lisp; lexical-binding: t; -*-
 ;;; Commentary:
 ;;; Code:
+(require 'doom) ; be silent, byte-compiler
 
 (after! doom-cli-ci
   ;;; Commit linter types
@@ -50,4 +51,4 @@
                         :match "\\.org$"
                         :map #'file-name-base)))
 
-;;; ci.el ends here
+;;; .doomrc ends here

bin/doom

@@ -198,8 +198,8 @@ SEE ALSO:
     silently fail on missing files, but --strict-load won't.
 
     Warning: files loaded this way load too late to define new commands. To
-    define commands, do so from `$DOOMDIR'/cli.el or `$DOOMDIR'/init.el
-    instead."
+    define commands, do so from `$DOOMDIR'/cli.el, `$DOOMDIR'/init.el, or a
+    .doomrc file in the current project tree."
   (when color?
     (setq doom-print-backend (if (eq color? :yes) 'ansi)))
   (when pager
@@ -299,7 +299,17 @@ SEE ALSO:
               (load! cli-file path t)))))
 
       (doom-log "Loading $DOOMDIR/cli.el")
-      (load! cli-file doom-private-dir t))))
+      (load! cli-file doom-private-dir t))
+
+    ;; Allow per-project Doom settings in .doom files.
+    (let (doomrc)
+      (cond
+       ((setq doomrc (getenv "DOOMRC"))
+        (load! doomrc))
+       ((setq doomrc (locate-dominating-file default-directory ".doomrc"))
+        (load! ".doomrc" doomrc)))
+      (when doomrc
+        (print! "Loaded doomrc: %s" doomrc)))))
 
 
 ;;

lisp/cli/ci.el

@@ -247,20 +247,6 @@ Note: warnings are not considered failures.")
 ;;; Commands
 
 ;;; doom ci
-(defcli! (:before ci) (&args _)
-  (when-let*
-      ((repo-root
-        (if-let* ((result (sh! "git" "rev-parse" "--show-toplevel"))
-                  ((zerop (car result))))
-            (cdr result)
-          default-directory))
-       (local-config
-        (car (or (doom-glob repo-root "ci.el")
-                 (doom-glob doom-private-dir "ci.el")))))
-    (defgroup! :prefix '(doom ci)
-      (load local-config nil t t))
-    (print! (item "Loaded %S") local-config)))
-
 (defcli! ci (&args _)
   "Commands that automate development processes."
   :partial t)

lisp/doom-start.el

@@ -143,7 +143,8 @@ If RETURN-P, return the message as a string instead of displaying it."
                      (float-time (time-subtract (current-time) before-init-time))))))
 
 ;; Add support for additional file extensions.
-(dolist (entry '(("/LICENSE\\'" . text-mode)
+(dolist (entry '(("/\\.doomrc\\'" . emacs-lisp-mode)
+                 ("/LICENSE\\'" . text-mode)
                  ("\\.log\\'" . text-mode)
                  ("rc\\'" . conf-mode)
                  ("\\.\\(?:hex\\|nes\\)\\'" . hexl-mode)))