rename extraEmacsPackages to extraPackages + extra examples in README

README.org

@@ -122,13 +122,16 @@ required in a user's config via =use-package= or =leaf=.
         alwaysTangle = true;
 
         # Optionally provide extra packages not in the configuration file.
-        extraEmacsPackages = epkgs: [
+        # This can also include extra executables to be run by Emacs (linters,
+        # language servers, formatters, etc)
+        extraPackages = epkgs: [
           epkgs.cask
+          pkgs.shellcheck
         ];
 
         # Optionally override derivations.
         override = final: prev: {
-          weechat = prev.melpaPackages.weechat.overrideAttrs(old: {
+          weechat = prev.melpaPackages.weechat.overrideAttrs (old: {
             patches = [ ./weechat-el.patch ];
           });
         };
@@ -146,10 +149,11 @@ can be handy for CI purposes:
 let
   emacsForCI = pkgs.emacsWithPackagesFromPackageRequires {
     packageElisp = builtins.readFile ./flycheck.el;
-    extraEmacsPackages = epkgs: [
+    extraPackages = epkgs: [
       epkgs.package-lint
     ];
   };
+in
 pkgs.mkShell {
   buildInputs = [ emacsForCI ];
 }

elisp.nix

@@ -18,7 +18,7 @@ in
 , alwaysEnsure ? false
 # emulate `#+PROPERTY: header-args:emacs-lisp :tangle yes`
 , alwaysTangle ? false
-, extraEmacsPackages ? epkgs: [ ]
+, extraPackages ? epkgs: [ ]
 , package ? pkgs.emacs
 , override ? (self: super: { })
 }:
@@ -63,7 +63,7 @@ in
 emacsWithPackages (epkgs:
   let
     usePkgs = map (name: epkgs.${name} or (mkPackageError name)) packages;
-    extraPkgs = extraEmacsPackages epkgs;
+    extraPkgs = extraPackages epkgs;
     defaultInitFilePkg =
       if !((builtins.isBool defaultInitFile) || (lib.isDerivation defaultInitFile))
       then throw "defaultInitFile must be bool or derivation"

packreq.nix

@@ -8,7 +8,7 @@ let
   parse = pkgs.callPackage ./parse.nix { };
 in
 { packageElisp
-, extraEmacsPackages ? epkgs: [ ]
+, extraPackages ? epkgs: [ ]
 , package ? pkgs.emacs
 , override ? (self: super: { })
 }:
@@ -25,6 +25,6 @@ in
 emacsWithPackages (epkgs:
   let
     usePkgs = builtins.map (name: epkgs.${name}) packages;
-    extraPkgs = extraEmacsPackages epkgs;
+    extraPkgs = extraPackages epkgs;
   in
   [ epkgs.use-package ] ++ usePkgs ++ extraPkgs)