Add :if, :when, :unless & :cond support to doom! macro

Now you can conditionally enable/disable modules.

core/core-keybinds.el

@@ -229,8 +229,6 @@ For example, :nvi will map to (list 'normal 'visual 'insert). See
 (put :mode         'lisp-indent-function 'defun)
 (put :prefix       'lisp-indent-function 'defun)
 (put :prefix-map   'lisp-indent-function 'defun)
-(put :unless       'lisp-indent-function 'defun)
-(put :when         'lisp-indent-function 'defun)
 
 ;; specials
 (defvar doom--map-forms nil)

core/core-modules.el

@@ -322,6 +322,10 @@ This value is cached. If REFRESH-P, then don't use the cached value."
 ;;
 ;;; Module config macros
 
+(put :if     'lisp-indent-function 2)
+(put :when   'lisp-indent-function 'defun)
+(put :unless 'lisp-indent-function 'defun)
+
 (defmacro doom! (&rest modules)
   "Bootstraps DOOM Emacs and its modules.
 
@@ -353,17 +357,29 @@ for a list of all recognized module trees. Order defines precedence (from most
 to least)."
   (unless (keywordp (car modules))
     (setq modules (eval modules t)))
-  (unless doom-modules
-    (setq doom-modules
-          (make-hash-table :test 'equal
-                           :size (if modules (length modules) 150)
-                           :rehash-threshold 1.0)))
-  (let ((inhibit-message doom-inhibit-module-warnings)
+  (let ((doom-modules
+         (make-hash-table :test 'equal
+                          :size (if modules (length modules) 150)
+                          :rehash-threshold 1.0))
+        (inhibit-message doom-inhibit-module-warnings)
         category m)
     (while modules
       (setq m (pop modules))
       (cond ((keywordp m) (setq category m))
             ((not category) (error "No module category specified for %s" m))
+            ((and (listp m)
+                  (keywordp (car m)))
+             (pcase (car m)
+               (:cond
+                (cl-loop for (cond . mods) in (cdr m)
+                         if (eval cond t)
+                         return (prependq! modules mods)))
+               (:if (if (eval (cadr m) t)
+                        (push (caddr m) modules)
+                      (prependq! modules (cdddr m))))
+               (fn (if (or (eval (cadr m) t)
+                           (eq fn :unless))
+                       (prependq! modules (cddr m))))))
             ((catch 'doom-modules
                (let* ((module (if (listp m) (car m) m))
                       (flags  (if (listp m) (cdr m))))
@@ -387,10 +403,10 @@ to least)."
                        (throw 'doom-modules t))))
                  (if-let (path (doom-module-locate-path category module))
                      (doom-module-set category module :flags flags :path path)
-                   (message "WARNING Couldn't find the %s %s module" category module))))))))
-  (when noninteractive
-    (setq doom-inhibit-module-warnings t))
-  `(setq doom-modules ',doom-modules))
+                   (message "WARNING Couldn't find the %s %s module" category module)))))))
+    (when noninteractive
+      (setq doom-inhibit-module-warnings t))
+    `(setq doom-modules ',doom-modules)))
 
 (defvar doom-disabled-packages)
 (define-obsolete-function-alias 'def-package! 'use-package!) ; DEPRECATED

docs/api.org

@@ -82,6 +82,36 @@ It is integrated into Helpful, in Doom.
      :background "red" :weight bold)))
 #+END_SRC
 
+* doom!
+#+BEGIN_SRC elisp :eval no
+(doom! :completion
+       company
+       ivy
+       ;;helm
+
+       :tools
+       (:if IS-MAC macos)
+       docker
+       lsp
+
+       :lang
+       (cc +lsp)
+       (:cond ((string= system-name "work-pc")
+               python
+               rust
+               web)
+              ((string= system-name "writing-pc")
+               (org +dragndrop)
+               ruby))
+       (:if IS-LINUX
+           (web +lsp)
+         web)
+
+       :config
+       literate
+       (default +bindings +smartparens))
+#+END_SRC
+
 * file-exists-p!
 #+BEGIN_SRC elisp
 (file-exists-p! "init.el" doom-emacs-dir)