Emacs: Switch package projectile -> project.el

.config/emacs/config.org

@@ -463,6 +463,31 @@ Functions that only use built-in Emacs functionality.
   (interactive)
   (org-babel-load-file (concat dot-emacs-dir "/config.org")))
 
+;; Reference: http://turingmachine.org/bl/2013-05-29-recursively-listing-directories-in-elisp.html
+(defun dot/directory-files-recursively-depth (dir regexp include-directories maxdepth)
+  "Depth limited variant of the built-in `directory-files-recursively'."
+  (let ((result '())
+		(current-directory-list (directory-files dir t)))
+	(dolist (path current-directory-list)
+	  (cond
+	   ((and (file-regular-p path)
+			 (file-readable-p path)
+			 (string-match regexp path))
+		(setq result (cons path result)))
+	   ((and (file-directory-p path)
+			 (file-readable-p path)
+			 (not (string-equal "/.." (substring path -3)))
+			 (not (string-equal "/." (substring path -2))))
+		(when (and include-directories
+				   (string-match regexp path))
+		  (setq result (cons path result)))
+		(when (> maxdepth 1)
+          (setq result (append (nreverse (dot/directory-files-recursively-depth
+										  path regexp include-directories (- maxdepth 1)))
+							   result))))
+	   (t)))
+	(reverse result)))
+
 (defun dot/dired-find-file ()
   "In Dired, visit the file or directory named on this line."
   (interactive)
@@ -1034,8 +1059,8 @@ General.el ~leader key binds.
   "n r r" '(org-roam-buffer-toggle              :which-key "Toggle buffer")
   "n r s" '(org-roam-ui-mode                    :which-key "Toggle server")
 
-  ;; Projectile
-  "p"   '(:keymap projectile-command-map :package projectile :which-key "projectile")
+  ;; Project
+  "p"   '(:keymap project-prefix-map       :which-key "project")
 
   ;; Quit
   "q"   '(:ignore t                        :which-key "quit")
@@ -1056,9 +1081,8 @@ General.el ~leader key binds.
 
   ;; Tabs / toggle
   "t"   '(:ignore t                                 :which-key "tabs/toggle")
-  "t b" '(centaur-tabs-group-buffer-groups          :which-key "Group tabs by buffer")
   "t f" '(dot/toggle-fringe                         :which-key "Toggle fringe")
-  "t p" '(centaur-tabs-group-by-projectile-project  :which-key "Group tabs by project")
+  "t g" '(centaur-tabs-switch-group                 :which-key "Switch tab group")
   "t h" '(centaur-tabs-backward-group               :which-key "Tab backward group")
   "t j" '(centaur-tabs-select-end-tab               :which-key "Tab select first")
   "t k" '(centaur-tabs-select-beg-tab               :which-key "Tab select last")

.config/emacs/config/development.org

@@ -5,7 +5,7 @@
 ** Table of Contents :toc_4:
   - [[#company][Company]]
   - [[#git][Git]]
-  - [[#projectile][Projectile]]
+  - [[#project][Project]]
   - [[#languages][Languages]]
     - [[#language-server-support][Language Server Support]]
     - [[#debug-adapter-support][Debug Adapter Support]]
@@ -107,28 +107,29 @@ GLSL integration with company requires the package: ~glslang~.
   (put 'magit-log-select-pick :advertised-binding [?\M-c])
   (put 'magit-log-select-quit :advertised-binding [?\M-k]))
 #+END_SRC
-** Projectile
+
+** Project
 
 Project manager.
 
+[[https://michael.stapelberg.ch/posts/2021-04-02-emacs-project-override/][Adding to project.el project directory detection]].
+
 #+BEGIN_SRC emacs-lisp
-(use-package projectile
+(use-package project
   :defer t
+  :init (setq project-list-file (concat dot-cache-dir "/projects"))
   :config
-  (setq projectile-cache-file (concat dot-cache-dir "/projectile.cache"))
-  (setq projectile-completion-system 'default)
-  (setq projectile-enable-caching t)
-  (setq projectile-indexing-method 'hybrid)
-  (setq projectile-known-projects-file (concat dot-cache-dir "/projectile-bookmarks.eld"))
-  (setq projectile-project-search-path '("~"))
-  (setq projectile-sort-order 'recentf)
+  (defun dot/project-find (dir)
+	(let ((root (locate-dominating-file dir ".project")))
+	  (and root (cons 'vc root))))
+  (add-hook 'project-find-functions #'dot/project-find)
 
   (defun dot/find-project-root ()
-	"Return root of the project, determined by `.git/' and `.projectile',
+	"Return root of the project, determined by `.git/' and `.project',
 `default-directory' otherwise."
-	(let ((search-directory (projectile-project-root)))
-	  (if search-directory
-		  search-directory
+	(let ((project (project-current)))
+	  (if project
+		  (project-root project)
 		default-directory)))
 
   (defun dot/find-file-in-project-root ()
@@ -137,7 +138,31 @@ Project manager.
 	(let ((default-directory (dot/find-project-root)))
 	  (call-interactively 'find-file)))
 
-  (projectile-mode))
+  (defun dot/project-remember-projects-under (dir maxdepth)
+	"Index all projects below directory DIR recursively, until MAXDEPTH."
+	(let ((files (mapcar 'file-name-directory
+						 (dot/directory-files-recursively-depth
+						  dir "\\.git$\\|\\.project$" t maxdepth))))
+	  (dolist (path files)
+		(project-remember-projects-under path))))
+
+  (unless (file-exists-p project-list-file)
+	(project-remember-projects-under "~/dotfiles")
+	(dot/project-remember-projects-under "~/code" 4))
+
+  (defun dot/project-project-name ()
+	"Return project name."
+	(let ((project (project-current)))
+	  (if project
+		  (file-name-nondirectory (directory-file-name (project-root project)))
+		"-")))
+
+  (defun dot/project-save-project-buffers ()
+	"Save all project buffers."
+	(interactive)
+	(let ((buffers (cl-remove-if (lambda (buffer) (not (buffer-file-name buffer)))
+								 (project-buffers (project-current)))))
+	  (save-some-buffers t (lambda () (member (current-buffer) buffers))))))
 #+END_SRC
 
 ** Languages

.config/emacs/config/org-mode.org

@@ -23,12 +23,12 @@
 						(setq tex-indent-basic 4)))
   :config
 
-  (with-eval-after-load 'projectile
+  (with-eval-after-load 'project
 	(defun compile-latex ()
 	  "Compile LaTeX project."
 	  (interactive)
 	  (let ((default-directory (dot/find-project-root)))
-		(projectile-save-project-buffers)
+		(dot/project-save-project-buffers)
 		(shell-command "make")))))
 #+END_SRC
 

.config/emacs/config/selection.org

@@ -40,7 +40,5 @@
   (marginalia-mode))
 
 (use-package consult
-  :after selectrum
-  :config
-  (setq consult-project-root-function #'dot/find-project-root))
+  :after selectrum)
 #+END_SRC

.config/emacs/config/ui.org

@@ -53,17 +53,30 @@ Places buffers as tabs in a bar at the top of the frame.
   (setq centaur-tabs-set-modified-marker t)
   (setq centaur-tabs-style "slant")
 
+  (setq centaur-tabs-project-buffer-group-calc nil)
   (defun centaur-tabs-buffer-groups ()
 	"Organize tabs into groups by buffer."
-	(list
-	 (cond
-	  ((string-equal "*" (substring (buffer-name) 0 1)) "Emacs")
-	  ((memq major-mode '(org-mode
-						  emacs-lisp-mode)) "Org Mode")
-	  ((derived-mode-p 'dired-mode) "Dired")
-	  ((derived-mode-p 'prog-mode
-					   'text-mode) "Editing")
-	  (t "User"))))
+	(unless centaur-tabs-project-buffer-group-calc
+	  (set (make-local-variable 'centaur-tabs-project-buffer-group-calc)
+		   (list
+			(cond
+			 ((string-equal "*" (substring (buffer-name) 0 1)) "Emacs")
+			 ((or (memq major-mode '(magit-process-mode
+									 magit-status-mode
+									 magit-diff-mode
+									 magit-log-mode
+									 magit-file-mode
+									 magit-blob-mode
+									 magit-blame-mode))
+				  (string= (buffer-name) "COMMIT_EDITMSG")) "Magit")
+			 ((project-current) (dot/project-project-name))
+			 ((memq major-mode '(org-mode
+								 emacs-lisp-mode)) "Org Mode")
+			 ((derived-mode-p 'dired-mode) "Dired")
+			 ((derived-mode-p 'prog-mode
+							  'text-mode) "Editing")
+			 (t "Other")))))
+	(symbol-value 'centaur-tabs-project-buffer-group-calc))
 
   (defun centaur-tabs-hide-tab (buffer)
 	"Hide from the tab bar by BUFFER name."
@@ -137,6 +150,7 @@ Places buffers as tabs in a bar at the top of the frame.
   (setq dashboard-banner-logo-title "GNU Emacs master race!")
   (setq dashboard-center-content t)
   (setq dashboard-page-separator "\n\f\n")
+  (setq dashboard-projects-backend 'project-el)
   (setq dashboard-set-file-icons t)
   (setq dashboard-set-footer nil)
   (setq dashboard-set-heading-icons t)
@@ -196,7 +210,7 @@ Provides Emacs with a file tree.
   :init
 
   ;; This needs to be in init to actually start loading the package
-  (with-eval-after-load 'projectile
+  (with-eval-after-load 'project
 	(defun neotree-toggle-in-project-root ()
 	  "Toggle Neotree in project root."
 	  (interactive)
@@ -224,7 +238,7 @@ Emacs mode line replacement.
 		  (accent . (telephone-line-erc-modified-channels-segment
 					 telephone-line-process-segment
 					 telephone-line-buffer-segment))
-		  (nil    . (telephone-line-projectile-segment))))
+		  (nil    . (telephone-line-project-segment))))
   (telephone-line-mode))
 #+END_SRC