Move machine and platform specific code into new files

Move some config out of custom.el for portability

lisp/windows-nt.el

@@ -0,0 +1,27 @@
+;;; $DOOMDIR/lisp/windows-nt.el -*- lexical-binding: t; -*-
+
+;; Windows path
+(when (eq system-type 'windows-nt)
+
+  ;; https://emacs.stackexchange.com/a/29949
+  ;; Make sure Unix tools are in front of `exec-path`
+  ;; (let ((bash (executable-find "bash")))
+  ;;   (when bash
+  ;;     (push (file-name-directory bash) exec-path)))
+  ;;
+  ;; version of bash found is incorrect, so just use the system git path instead
+  (push "C:/Program Files/Git/usr/bin/" exec-path)
+
+  ;; Update PATH from exec-path
+  (let ((path
+         (mapcar
+          'file-truename
+          (append exec-path (split-string (getenv "PATH") path-separator t)))))
+    (setenv "PATH" (mapconcat 'identity (delete-dups path) path-separator))))
+
+(provide (intern (format "%s" system-type)))
+
+;; For elisp-autofmt
+;; Local variables:
+;; elisp-autofmt-load-packages-local: ("use-package" "use-package-core")
+;; end: