Load non-packages.el autoloads

We were only pulling in autoloads files for packages installed via
packages.el. This was not that noticeable because all pinned packages
without custom derivations end up installed that way, but it does affect
extra packages (including the one pointed out in #11).

Try to fix this by including autoloads files in the top-level site-lisp
directory from emacsWithPackages.

build-helpers/build-doom-profile.sh

@@ -45,7 +45,8 @@ if [[ -n "$profileName" ]]; then
     export HOME=$(mktemp -d)
     export DOOMPROFILE="$profileName";
 fi
-$runtimeShell $doomSource/bin/doomscript $buildProfile
+$runtimeShell $doomSource/bin/doomscript $buildProfile \
+    -l $deps/share/emacs/site-lisp
 
 # Similar to audit-tmpdir.sh in nixpkgs.
 if grep -q -F "$TMPDIR/" -r $out; then

build-helpers/build-profile

@@ -18,6 +18,21 @@
 ;; We skip Doom's normal install and initialization.
 (require 'straight)
 
+;; Set from run!
+(defvar site-lisp)
+
+(defun generate-nix-autoloads ()
+  "Pull in autoloads for non-ELPA emacsWithPackages dependencies."
+  (let (filenames)
+    (dolist (filename (directory-files site-lisp))
+      (when (string-suffix-p "-autoloads.el" filename)
+        (push (expand-file-name filename site-lisp) filenames)))
+    (doom-autoloads--scan filenames doom-autoloads-excluded-files 'literal)))
+
+(add-to-list
+ 'doom-profile-generators
+ '("80-loaddefs-nix.auto.el" . generate-nix-autoloads))
+
 ;; Doom runs this with package.el activated, but suppresses activation during
 ;; normal startup. Store the side effects of activation in the profile to avoid
 ;; (slow) package activation during normal startup.
@@ -54,7 +69,8 @@
 
 (add-to-list 'doom-autoloads-cached-vars 'package-activated-list)
 
-(defcli! build-profile ()
+(defcli! build-profile
+    ((site-lisp ("-l" dir) "site-lisp directory to load autoloads from"))
   "Write a Doom profile."
   ;; Load our generated profile's init.el. Both to get the profile right and to
   ;; load the advice to make Doom not install straight.

checks.nix

@@ -81,6 +81,8 @@ in {
   interactive-without-loader = doomTest "no-profile" { config.default = true; } { profileName = ""; };
   interactive-no-profile-hack = doomTest "no-profile" { config.default = true; } { noProfileHack = true; };
 
+  cmake = doomTest "cmake" { lang.cc = true; } { };
+
   org-re-reveal = doomTest "org-re-reveal" { lang.org = [ "+present" ]; } { };
 
   # Various tests of module combinations.

default.nix

@@ -326,6 +326,7 @@ let
     buildProfile = ./build-helpers/build-profile;
     initEl = ./init.el;
     EMACS = lib.getExe emacsWithPackages;
+    inherit (emacsWithPackages) deps;
     # Enable this to troubleshoot failures at this step.
     #DEBUG = "1";
 

tests.el

@@ -41,6 +41,11 @@
   (unless (string-search "/site-lisp/revealjs" org-re-reveal-root)
     (error "org-re-reveal does not find our revealjs: %s" org-re-reveal-root)))
 
+(defun test-cmake ()
+  "Test cmake-mode autoloads are loaded."
+  (unless (functionp 'cmake-mode)
+    (error "cmake-mode not available")))
+
 (defun test-doom ()
   (let* ((out (getenv "out"))
          (test (intern-soft (format "test-%s" (getenv "testName"))))