107 lines
3.3 KiB
Nix
Executable File
107 lines
3.3 KiB
Nix
Executable File
{ config, lib, pkgs, inputs, ... }@args:
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# NOTE: Remember to wrap `programs.emacs.finalPackage` rather than pass a
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# wrapped package to `programs.emacs.package`, lest some unexpected behaviour
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# occur when home-manager calls emacs during the build process.
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let
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emacsPackage = pkgs.emacs30-pgtk;
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emacsConfigDir = "/persist/dots/users/crumb/programs/emacs";
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emacs-overlay =
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import (builtins.fetchTarball {
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url =
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"https://github.com/nix-community/emacs-overlay/archive/master.tar.gz";
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sha256 = "sha256:02aln37ch9isz8h7dlm9v6jkl60g923z0dij0rjsxq7xi61fas2j";
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});
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# Create a new instance of nixpkgs with emacs-overlay applied. This is a
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# little unorthodox, but we do it
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# 1. for the sake of organisation — For pure aesthetics and a clean
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# codebase, I want everything Emacs to stay in this file;
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# 2. and, there's simply no need to leak emacs-overlay's packages into the
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# global nixpkgs instance when nothing else is using it!
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pkgs' = import inputs.nixpkgs {
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system = args.system;
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overlays = [ emacs-overlay ];
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};
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emacsDataDir = "${config.xdg.dataHome}/emacs";
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emacsCacheDir = "${emacsDataDir}/cache";
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straightBaseDir = "${emacsDataDir}/straight";
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fontPackages = [
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pkgs.julia-mono
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pkgs.nerd-fonts.victor-mono
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pkgs.overpass
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];
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emacsWrapper = pkgs.symlinkJoin {
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name = "emacs-wrapper";
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paths = [ emacsPackage ];
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nativeBuildInputs = [ pkgs.makeWrapper ];
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buildInputs = [
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pkgs.git # Dependency of Straight.el.
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];
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postBuild = ''
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# The binary called `emacs` is actually a symlink to `emacs-«version»`, so
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# we needn't wrap it.
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for i in $out/bin/emacs-*; do
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wrapProgram "$i" \
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--add-flags "--init-directory \"${emacsConfigDir}\"" \
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--set EMACS_STRAIGHT_BASE_DIR "${straightBaseDir}" \
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--set EMACS_CACHE_DIR "${emacsCacheDir}" \
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--set EMACS_DATA_DIR "${emacsDataDir}" \
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--prefix PATH : "${pkgs.git}/bin"
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done
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'';
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};
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emacsclient-or-emacs = pkgs.writeShellScriptBin "emacsclient-or-emacs" ''
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emacsclient --alternate-editor=${emacsWrapper}/bin/emacs "$@"
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'';
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in {
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sydnix.impermanence.cache.directories =
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# Impermanence expects the path to be relative to ~.
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map (lib.removePrefix config.home.homeDirectory) [
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straightBaseDir
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emacsCacheDir
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emacsDataDir
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];
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# Set emacsclient as the default editor for the time being.
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home.sessionVariables =
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let e = "${emacsclient-or-emacs}/bin/emacsclient-or-emacs";
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in {
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"EDITOR" = e;
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"VISUAL" = e;
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};
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home.file =
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let default =
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lib.removePrefix "${config.home.homeDirectory}/"
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"${straightBaseDir}/straight/versions/default.el";
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in {
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${default}.source =
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config.lib.file.mkOutOfStoreSymlink
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"/persist/dots/users/crumb/programs/emacs/straight-lockfile.el";
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};
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home.packages = [
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emacsWrapper
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emacsclient-or-emacs
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] ++ fontPackages;
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# There's probably a better place to put this, but the current setup demands
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# Fontconfig for Emacs to find my fonts.
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fonts.fontconfig.enable = true;
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# TODO: Make sure this is using the right package for Emacs...
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services.emacs = {
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enable = true;
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# Generate a desktop entry for emacsclient.
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client.enable = true;
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package = emacsWrapper;
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};
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}
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