feat(emacs): Spell-checking

- Uses Aspell and Jinx.

users/crumb/programs/emacs.nix

@@ -33,35 +33,57 @@ let
   fontPackages = [
     pkgs.julia-mono
     pkgs.nerd-fonts.victor-mono
-    # pkgs.overpass
     pkgs.ibm-plex
   ];
 
-  emacsWrapper = pkgs.symlinkJoin {
-    name = "emacs-wrapper";
-    paths = [ emacsPackage ];
-    nativeBuildInputs = [ pkgs.makeWrapper ];
-    buildInputs = [
-      pkgs.git # Dependency of Straight.el.
-    ];
-    postBuild = ''
-      # The binary called `emacs` is actually a symlink to `emacs-«version»`, so
-      # we needn't wrap it.
-      for i in $out/bin/emacs-*; do
-        wrapProgram "$i" \
-          --add-flags "--init-directory \"${emacsConfigDir}\"" \
-          --set EMACS_STRAIGHT_BASE_DIR "${straightBaseDir}" \
-          --set EMACS_CACHE_DIR "${emacsCacheDir}" \
-          --set EMACS_DATA_DIR "${emacsDataDir}" \
-          --prefix PATH : "${pkgs.git}/bin"
-      done
-    '';
-  };
+  my-aspell = pkgs.aspellWithDicts
+    (dicts: with dicts; [
+      en en-computers en-science
+    ]);
+
+  emacsWrapper =
+    pkgs.symlinkJoin {
+      name = "emacs-wrapper";
+      paths = [ emacsPackage ];
+      nativeBuildInputs = [ pkgs.makeWrapper ];
+      buildInputs = [
+        pkgs.git # Dependency of Straight.el.
+        my-aspell
+      ];
+      postBuild = ''
+        # The binary called `emacs` is actually a symlink to `emacs-«version»`, so
+        # we needn't wrap it.
+        for i in $out/bin/emacs-*; do
+          wrapProgram "$i" \
+            --add-flags "--init-directory \"${emacsConfigDir}\"" \
+            --set EMACS_STRAIGHT_BASE_DIR "${straightBaseDir}" \
+            --set EMACS_CACHE_DIR "${emacsCacheDir}" \
+            --set EMACS_DATA_DIR "${emacsDataDir}" \
+            --prefix PATH : "${pkgs.git}/bin" \
+            --prefix PATH : "${my-aspell}/bin" \
+            --set ASPELL_CONF "dict-dir ${my-aspell}/lib/aspell"
+        done
+
+        # HACK: Prevent collision between `emacsWrapper` and the later
+        # `emacsWithPackages` call.
+        # find $out/bin -not -regex '.*/\.?emacs[^/]*' -exec rm {} \;
+      '';
+      meta = emacsPackage.meta;
+      version = emacsPackage.version;
+    };
 
   emacsclient-or-emacs = pkgs.writeShellScriptBin "emacsclient-or-emacs" ''
     emacsclient --alternate-editor=${emacsWrapper}/bin/emacs "$@"
   '';
 in {
+  programs.emacs = {
+    enable = true;
+    package = emacsWrapper;
+    extraPackages = epkgs: [
+      epkgs.jinx
+    ];
+  };
+
   sydnix.impermanence.cache.directories = 
     # Impermanence expects the path to be relative to ~.
     map (lib.removePrefix config.home.homeDirectory) [
@@ -89,7 +111,7 @@ in {
     };
 
   home.packages = [
-    emacsWrapper
+    # emacsWrapper
     emacsclient-or-emacs
   ] ++ fontPackages;