/nix/store/43r2rms3j5y9qclwd4kipbvribkjbr4d-dir-locals.el

gistfile1.txt

(require 'inherit-local "/nix/store/5pgm72fjmkzi09qncvffx18dr9957lds-emacs-inherit-local-1.1.1/share/emacs/site-lisp/elpa/inherit-local-1.1.1/inherit-local.elc")


; Only set up nixpkgs buffer handling when we have some buffers active
(defvar nixpkgs--buffer-count 0)
(when (eq nixpkgs--buffer-count 0)
  (make-variable-buffer-local 'nixpkgs--is-nixpkgs-buffer)
  ; When generating a new temporary buffer (one whose name starts with a space), do inherit-local inheritance and make it a nixpkgs buffer
  (defun nixpkgs--around-generate (orig name)
    (if (and nixpkgs--is-nixpkgs-buffer (eq (aref name 0) ?\s))
        (let ((buf (funcall orig name)))
          (progn
            (inherit-local-inherit-child buf)
            (with-current-buffer buf
              (setq nixpkgs--buffer-count (1+ nixpkgs--buffer-count))
              (add-hook 'kill-buffer-hook 'nixpkgs--decrement-buffer-count nil t)))
          buf)
      (funcall orig name)))
  (advice-add 'generate-new-buffer :around #'nixpkgs--around-generate)
  ; When we have no more nixpkgs buffers, tear down the buffer handling
  (defun nixpkgs--decrement-buffer-count ()
    (setq nixpkgs--buffer-count (1- nixpkgs--buffer-count))
    (when (eq nixpkgs--buffer-count 0)
      (advice-remove 'generate-new-buffer #'nixpkgs--around-generate)
      (fmakunbound 'nixpkgs--around-generate)
      (fmakunbound 'nixpkgs--decrement-buffer-count))))
(setq nixpkgs--buffer-count (1+ nixpkgs--buffer-count))
(add-hook 'kill-buffer-hook 'nixpkgs--decrement-buffer-count nil t)


; Add packages to PATH and exec-path
(make-local-variable 'process-environment)
(put 'process-environment 'permanent-local t)
(inherit-local 'process-environment)
; setenv modifies in place, so copy the environment first
(setq process-environment (copy-tree process-environment))
(setenv "PATH" (concat "/nix/store/cz79yxnzsi2262i972pbfgvd93lf9y5k-R-3.4.3/bin:" (getenv "PATH")))
(inherit-local-permanent exec-path (append '("/nix/store/cz79yxnzsi2262i972pbfgvd93lf9y5k-R-3.4.3/bin") exec-path))


(setq nixpkgs--is-nixpkgs-buffer t)
(inherit-local 'nixpkgs--is-nixpkgs-buffer)