diff options
| author | Moritz Ulrich <moritz@tarn-vedra.de> | 2018-01-04 11:16:35 +0100 |
|---|---|---|
| committer | Moritz Ulrich <moritz@tarn-vedra.de> | 2018-01-05 10:50:13 +0100 |
| commit | 1543c8cc01a4501ec9286e03ccf92965deff611e (patch) | |
| tree | 2f8005b72f3fb57ce4ed264bde6ca9fc9ccb0939 /pkgs/applications/editors/emacs/site-start.el | |
| parent | 6484eac5b2e38490724d9df3079e736605c7eeb6 (diff) | |
emacs: Add more documentation to `site-start.el`
`site-start.el` is the file loaded on startup, containing nix-specific
customizations like adding paths in `NIX_PROFILES` to the
emacs-specific search-path (`load-path`) or making man-pages in these
directories discoverable.
Diffstat (limited to 'pkgs/applications/editors/emacs/site-start.el')
| -rw-r--r-- | pkgs/applications/editors/emacs/site-start.el | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/pkgs/applications/editors/emacs/site-start.el b/pkgs/applications/editors/emacs/site-start.el index b41ca92db086..004b917ebb6d 100644 --- a/pkgs/applications/editors/emacs/site-start.el +++ b/pkgs/applications/editors/emacs/site-start.el @@ -1,18 +1,28 @@ -;;; NixOS specific load-path +(defun nix--profile-paths () + "Returns a list of all paths in the NIX_PROFILES environment +variable, 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' (setq load-path - (append (reverse (mapcar (lambda (x) (concat x "/share/emacs/site-lisp/")) - (split-string (or (getenv "NIX_PROFILES") "")))) + (append (mapcar (lambda (x) (concat x "/share/emacs/site-lisp/")) + (nix--profile-paths)) load-path)) ;;; Make `woman' find the man pages (eval-after-load 'woman '(setq woman-manpath - (append (reverse (mapcar (lambda (x) (concat x "/share/man/")) - (split-string (or (getenv "NIX_PROFILES") "")))) + (append (mapcar (lambda (x) (concat x "/share/man/")) + (nix--profile-paths)) woman-manpath))) ;;; Make tramp work for remote NixOS machines (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' '(add-to-list 'tramp-remote-path "/run/current-system/sw/bin")) ;;; C source directory @@ -22,9 +32,9 @@ ;;; from: /nix/store/<hash>-emacs-<version>/share/emacs/site-lisp/site-start.el ;;; to: /nix/store/<hash>-emacs-<version>/share/emacs/<version>/src/ (let ((emacs - (file-name-directory ;; .../emacs/ - (directory-file-name ;; .../emacs/site-lisp - (file-name-directory load-file-name)))) ;; .../emacs/site-lisp/ + (file-name-directory ; .../emacs/ + (directory-file-name ; .../emacs/site-lisp + (file-name-directory load-file-name)))) ; .../emacs/site-lisp/ (version (file-name-as-directory (concat |