Projectile project in folder without write access?

Question

At times I want to browse the code of projects to which I have read-only access. This makes it impossible for me to drop a .projectile file at the root of the project.

Is there a way to define projects for use with projectile when I do not have write access to the project directories?

Answer 1

GitHub user thomasf provided a workaround which I modified only slightly:

;; (source: https://github.com/bbatsov/projectile/issues/364#issuecomment-61296248)
(defun projectile-root-child-of (dir &optional list)
  (projectile-locate-dominating-file
   dir
   (lambda (dir)
     (--first
      (if (and
           (s-equals? (file-remote-p it) (file-remote-p dir))
           (string-match-p (expand-file-name it) (expand-file-name dir)))
          dir)
      (or list project-root-regexps (list))))))

(defvar project-root-regexps ()
  "List of regexps to match against when projectile is searching
  for project root directories.")

(add-to-list 'project-root-regexps "/path/to/some/project/$")
(add-to-list 'project-root-regexps "/path/to/another/project/$")
(add-to-list 'project-root-regexps "/path/to/one/more/project/$")

(nconc projectile-project-root-files-functions '(projectile-root-child-of))

This lets me add projects to to the list project-root-regexps, and as far as I can tell they behave just as if they had a .projectile file at their root.

Answer 2

In that case, you can temporary disable projectile-require-project-root:

(setq projectile-require-project-root nil)

Then, you can activate Projectile everywhere.