Emacs: Difference between revisions

To temporarily use Emacs in a shell environment without modifying your system configuration, you can run:

$ nix-shell -p emacs

This makes the Emacs editor available in your current shell. You can then launch Emacs by typing <code>emacs</code>.

You may then reference it twice:

   ## if you want it per-user instead of system-wide use 'users.users.<name>.packages = with pkgs; [' instead

   environment.systemPackages = with pkgs; [

     package = pkgs.myEmacs;

   };

Using this approach, there is no need to keep two lists of emacsPackages in sync.

They are located at <code>pkgs/applications/editors/emacs/elisp-packages/manual-packages/</code> [https://github.com/NixOS/nixpkgs/tree/master/pkgs/applications/editors/emacs/elisp-packages/manual-packages] and a new pkg must be added under <code>pkgs/applications/editors/elisp-packages/manual-packages.nix</code> [https://github.com/NixOS/nixpkgs/blob/master/pkgs/applications/editors/emacs/elisp-packages/manual-packages.nix]. Once the nixpkg is ready, it can be tested using the following command. This inserts the nixpkg into the load-path of Emacs.

$ nix-shell -I nixpkgs=<path_to_nixpkgs_copy> -p "(emacsPackagesFor pkgs.emacs28).emacsWithPackages (epkgs: [ epkgs.<package> ])"

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