Restore transient/seq hack

emacs/init.el

@@ -49,6 +49,20 @@
         (elpaca-use-package-mode))
 (elpaca-wait)
 
+;; Magit depends on newer versions of seq/transient than Emacs bundles, but Elpaca
+;; can't or won't update them on its own.
+(defun +elpaca-unload-seq (e)
+   (and (featurep 'seq) (unload-feature 'seq t))
+   (elpaca--continue-build e))
+
+(defun +elpaca-seq-build-steps ()
+   (append (butlast (if (file-exists-p (expand-file-name "seq" elpaca-builds-directory))
+                        elpaca--pre-built-steps elpaca-build-steps))
+           (list '+elpaca-unload-seq 'elpaca--activate-package)))
+
+(use-package seq :ensure `(seq :build ,(+elpaca-seq-build-steps)))
+(use-package transient :ensure t)
+
 ;;; OS-specific tweaks
 (defconst ON-LINUX   (eq system-type 'gnu/linux))
 (defconst ON-MAC     (eq system-type 'darwin))