90 lines
4.3 KiB
EmacsLisp
90 lines
4.3 KiB
EmacsLisp
;; -*- lexical-binding: t; -*-
|
|
(defun nix--profile-paths ()
|
|
"Return a list of all paths in NIX_PROFILES.
|
|
The list is ordered from more-specific (the user profile) to the
|
|
least specific (the system profile)"
|
|
(reverse (split-string (or (getenv "NIX_PROFILES") ""))))
|
|
|
|
;;; Extend `load-path' to search for elisp files in subdirectories of all folders in `NIX_PROFILES'.
|
|
;;; Non-Nix distros have similar logic in /usr/share/emacs/site-lisp/subdirs.el.
|
|
;;; See https://www.gnu.org/software/emacs/manual/html_node/elisp/Library-Search.html
|
|
(dolist (profile (reverse (nix--profile-paths)))
|
|
;; `directory-file-name' is important to add sub dirs to the right place of `load-path'
|
|
;; see the source code of `normal-top-level-add-to-load-path'
|
|
(let ((default-directory (directory-file-name
|
|
(expand-file-name "share/emacs/site-lisp/" profile))))
|
|
(when (file-exists-p default-directory)
|
|
(setq load-path (cons default-directory load-path))
|
|
(normal-top-level-add-subdirs-to-load-path))))
|
|
|
|
;;; Remove wrapper site-lisp from EMACSLOADPATH so it's not propagated
|
|
;;; to any other Emacsen that might be started as subprocesses.
|
|
(let ((wrapper-site-lisp (getenv "emacsWithPackages_siteLisp"))
|
|
(env-load-path (getenv "EMACSLOADPATH")))
|
|
(when wrapper-site-lisp
|
|
(setenv "emacsWithPackages_siteLisp" nil))
|
|
(when (and wrapper-site-lisp env-load-path)
|
|
(let* ((env-list (split-string env-load-path ":"))
|
|
(new-env-list (delete wrapper-site-lisp env-list)))
|
|
(setenv "EMACSLOADPATH" (when new-env-list
|
|
(mapconcat 'identity new-env-list ":"))))))
|
|
|
|
(let ((wrapper-site-lisp (getenv "emacsWithPackages_siteLispNative"))
|
|
(env-load-path (getenv "EMACSNATIVELOADPATH")))
|
|
(when wrapper-site-lisp
|
|
(setenv "emacsWithPackages_siteLispNative" nil))
|
|
(when (and wrapper-site-lisp env-load-path)
|
|
(let* ((env-list (split-string env-load-path ":"))
|
|
(new-env-list (delete wrapper-site-lisp env-list)))
|
|
(setenv "EMACSNATIVELOADPATH" (when new-env-list
|
|
(mapconcat 'identity new-env-list ":"))))))
|
|
|
|
;;; Set up native-comp load path.
|
|
(when (featurep 'native-compile)
|
|
;; Append native-comp subdirectories from `NIX_PROFILES'.
|
|
;; Emacs writes asynchronous native-compilation files to the first writable directory[1].
|
|
;; At this time, (car native-comp-eln-load-path) is a writable one in `user-emacs-directory'[2].
|
|
;; So we keep that one unchanged.
|
|
;; [1]: info "(elisp) Native-Compilation Variables"
|
|
;; [2]: https://git.savannah.gnu.org/cgit/emacs.git/tree/lisp/startup.el?id=3685387e609753293c4518be75e77c659c3b2d8d#n601
|
|
(setq native-comp-eln-load-path
|
|
(append (list (car native-comp-eln-load-path))
|
|
(mapcar (lambda (profile-dir)
|
|
(concat profile-dir "/share/emacs/native-lisp/"))
|
|
(nix--profile-paths))
|
|
(cdr native-comp-eln-load-path))))
|
|
|
|
;;; Make `woman' find the man pages
|
|
(defvar woman-manpath)
|
|
(eval-after-load 'woman
|
|
'(setq woman-manpath
|
|
(append (mapcar (lambda (x) (concat x "/share/man/"))
|
|
(nix--profile-paths))
|
|
woman-manpath)))
|
|
|
|
;;; Make tramp work for remote NixOS machines
|
|
(defvar tramp-remote-path)
|
|
(eval-after-load 'tramp
|
|
;; TODO: We should also add the other `NIX_PROFILES' to this path.
|
|
;; However, these are user-specific, so we would need to discover
|
|
;; them dynamically after connecting via `tramp'
|
|
'(progn
|
|
(add-to-list 'tramp-remote-path "/run/current-system/sw/bin")
|
|
(add-to-list 'tramp-remote-path "/run/wrappers/bin")))
|
|
|
|
;;; C source directory
|
|
;;;
|
|
;;; Computes the location of the C source directory from the path of
|
|
;;; the current file:
|
|
;;; from: /nix/store/<hash>-emacs-<version>/share/emacs/site-lisp/site-start.el
|
|
;;; to: /nix/store/<hash>-emacs-<version>/share/emacs/<version>/src/
|
|
(defvar find-function-C-source-directory)
|
|
(let ((emacs
|
|
(file-name-directory ; .../emacs/
|
|
(directory-file-name ; .../emacs/site-lisp
|
|
(file-name-directory load-file-name)))) ; .../emacs/site-lisp/
|
|
(version
|
|
(file-name-as-directory
|
|
emacs-version))
|
|
(src (file-name-as-directory "src")))
|
|
(setq find-function-C-source-directory (concat emacs version src)))
|