Stop using the ensure-library macro

There are simpler ways to achieve the same thing.

emacs/.emacs.d/init.org

@@ -30,6 +30,15 @@ To start off, first I need to enable lexical binding.
       (add-to-list 'package-archives '("org" . "http://orgmode.org/elpa/")))
   #+END_SRC
 
+  Add all my vendored packages to the load path.
+
+  #+BEGIN_SRC emacs-lisp
+    (eval-and-compile
+      (mapc (lambda (d) (add-to-list 'load-path d))
+            (directory-files
+             (locate-user-emacs-file "vendor-lisp/") t "^[^.]")))
+  #+END_SRC
+
   Initialize package.el so that packages can be loaded and used. This
   also needs to be done at both run-time and compile-time so packages
   can be installed at compile-time.
@@ -75,48 +84,17 @@ To start off, first I need to enable lexical binding.
 
   #+BEGIN_SRC emacs-lisp
     (eval-when-compile
+      (let* ((not-installed (seq-remove 'package-installed-p
+                                        package-selected-packages))
+             (available (seq-filter (lambda (p)
+                                      (assq p package-archive-contents))
+                                    not-installed))
+             (difference (- (length not-installed) (length available))))
+        (when (> difference 0)
           (silently "Refresh packages"
             (package-refresh-contents)))
-  #+END_SRC
+        (when available
-
+          (mapc (lambda (p) (package-install p t)) available))))
-  This macro is inspired by use-package, but I want to maintain some
-  control of the syntax I use to configure my settings.
-
-  #+BEGIN_SRC emacs-lisp
-    (defmacro ensure-library (library &rest args)
-      "Make sure LIBRARY is installed.
-
-    ARGS should be a plist which may contain one of the following options:
-
-    - :package
-
-      Specify which package should actually be installed to ensure
-      the library named in LIBRARY exists.
-
-    - :path
-
-      Specify a path to add to the load path to be able to load this
-      package."
-      (declare (indent 1))
-      (let ((library-symbol (cl-gensym))
-            (package-symbol (cl-gensym))
-            (path-symbol (cl-gensym))
-            (package (or (plist-get args :package) library))
-            (path (plist-get args :path)))
-        `(progn
-           (eval-and-compile
-             (let ((,path-symbol ,path))
-               (if ,path-symbol
-                   (add-to-list 'load-path
-                                (if (file-name-absolute-p ,path-symbol)
-                                    ,path-symbol
-                                  (concat user-emacs-directory ,path-symbol))))))
-           (eval-when-compile
-             (let ((,library-symbol ',library)
-                   (,package-symbol ',package))
-               (unless (require ,library-symbol nil :noerror)
-                 (package-install ,package-symbol)
-                 (require ,library-symbol)))))))
   #+END_SRC
 
 * Site lisp
@@ -258,8 +236,6 @@ To start off, first I need to enable lexical binding.
   with people who don't pay attention to it, it has worked flawlessly.
 
   #+BEGIN_SRC emacs-lisp
-    (ensure-library destroy-trailing-whitespace
-      :path "vendor-lisp/destroy-trailing-whitespace")
     (require 'destroy-trailing-whitespace)
     (global-destroy-trailing-whitespace-mode)
   #+END_SRC
@@ -285,8 +261,6 @@ To start off, first I need to enable lexical binding.
 * Theme
 
   #+BEGIN_SRC emacs-lisp
-    (ensure-library yoshi-theme
-      :path "vendor-lisp/yoshi-theme")
     (add-to-list 'custom-theme-load-path
                  (concat user-emacs-directory "vendor-lisp/yoshi-theme"))
     (load-theme 'yoshi :no-confirm)
@@ -297,7 +271,6 @@ To start off, first I need to enable lexical binding.
   I really don't need to see some of the minor modes.
 
   #+BEGIN_SRC emacs-lisp
-    (ensure-library diminish)
     (require 'diminish)
   #+END_SRC
 
@@ -307,16 +280,6 @@ To start off, first I need to enable lexical binding.
   vertically. I'm surprised how much I like it. I've tried Swiper
   before and I didn't like that so much.
 
-  #+BEGIN_SRC emacs-lisp
-    (ensure-library ivy)
-  #+END_SRC
-
-  Also install the =flx= package to allow ivy to use fuzzy matching.
-
-  #+BEGIN_SRC emacs-lisp
-    (ensure-library flx)
-  #+END_SRC
-
   Since I immediately use and enable Ivy, there's no need to autoload
   it, so require it to keep the byte-compiler quiet.
 
@@ -350,10 +313,6 @@ To start off, first I need to enable lexical binding.
   Counsel is a group of functions that use Ivy to specialize on
   certain built-in commands, such as M-x.
 
-  #+BEGIN_SRC emacs-lisp
-    (ensure-library counsel)
-  #+END_SRC
-
   Since I enable Counsel mode immediately, there's no point in leaving
   it to be autoloaded. Requiring it keeps the byte-compiler happy.
 
@@ -510,10 +469,6 @@ To start off, first I need to enable lexical binding.
    first, but once you get the hang of using it, you won't want to
    live without it.
 
-   #+BEGIN_SRC emacs-lisp
-     (ensure-library paredit)
-   #+END_SRC
-
    Don't show that paredit is enabled, it should be obvious from the
    effects it has. This will save some precious real-estate on my mode
    line.
@@ -555,15 +510,10 @@ To start off, first I need to enable lexical binding.
    Flycheck lets me see (compiler) errors, warnings and info messages
    while writing code.
 
-   #+BEGIN_SRC emacs-lisp
-     (ensure-library flycheck)
-   #+END_SRC
-
    When developing packages with Cask, some special care needs to be
    taken to ensure the checkers work correctly.
 
    #+BEGIN_SRC emacs-lisp
-     (ensure-library flycheck-cask)
      (add-hook 'flycheck-mode-hook 'flycheck-cask-setup)
    #+END_SRC
 
@@ -588,8 +538,6 @@ To start off, first I need to enable lexical binding.
    Show the error message at point in a tooltip.
 
    #+BEGIN_SRC emacs-lisp
-     (ensure-library flycheck-pos-tip)
-
      (with-eval-after-load 'flycheck
        (require 'flycheck-pos-tip)
        (flycheck-pos-tip-mode))
@@ -623,7 +571,6 @@ To start off, first I need to enable lexical binding.
    commit.
 
    #+BEGIN_SRC emacs-lisp
-     (ensure-library diff-hl)
      (require 'diff-hl)
      (global-diff-hl-mode)
    #+END_SRC
@@ -633,10 +580,6 @@ To start off, first I need to enable lexical binding.
    Hydra is an interesting way of managing keybindings, I want to
    experiment.
 
-   #+BEGIN_SRC emacs-lisp
-     (ensure-library hydra)
-   #+END_SRC
-
    Add a hydra for org.
 
    #+BEGIN_SRC emacs-lisp
@@ -664,7 +607,6 @@ To start off, first I need to enable lexical binding.
    Projectile is, thus far, the best project module for Emacs.
 
    #+BEGIN_SRC emacs-lisp
-     (ensure-library projectile)
      (require 'projectile)
    #+END_SRC
 
@@ -755,11 +697,6 @@ To start off, first I need to enable lexical binding.
    might release it as a package, but for now I keep it with the rest
    of my configuration.
 
-   #+BEGIN_SRC emacs-lisp
-     (ensure-library mbsync-conf-mode
-       :path "vendor-lisp/mbsync-conf-mode")
-   #+END_SRC
-
    Since it isn't installed by package.el, I need to specify the
    autoload myself.
 
@@ -782,11 +719,6 @@ To start off, first I need to enable lexical binding.
    release it as a package, but for now I keep it with the rest of my
    configuration.
 
-   #+BEGIN_SRC emacs-lisp
-     (ensure-library msmtprc-mode
-       :path "vendor-lisp/msmtprc-mode")
-   #+END_SRC
-
    Since it isn't installed by package.el, I need to specify the
    autoload myself.
 
@@ -831,10 +763,6 @@ To start off, first I need to enable lexical binding.
    Web mode is a good general-purpose web template mode. It works well
    with many template languages and PHP as well.
 
-   #+BEGIN_SRC emacs-lisp
-     (ensure-library web-mode)
-   #+END_SRC
-
    Enable a specialized whitespace mode for web mode that shows tabs
    at the beginning of a line.
 
@@ -868,15 +796,9 @@ To start off, first I need to enable lexical binding.
 
 ** Clojure mode
 
-   #+BEGIN_SRC emacs-lisp
-     (ensure-library clojure-mode)
-   #+END_SRC
-
    Install extra font-locking for clojure.
 
    #+BEGIN_SRC emacs-lisp
-     (ensure-library clojure-mode-extra-font-locking)
-
      (with-eval-after-load 'clojure-mode
        (require 'clojure-mode-extra-font-locking))
    #+END_SRC
@@ -909,10 +831,6 @@ To start off, first I need to enable lexical binding.
    Cider is like Slime for Common Lisp. This configuration is copied
    from the one provided by Clojure for the Brave and True.
 
-   #+BEGIN_SRC emacs-lisp
-     (ensure-library cider)
-   #+END_SRC
-
    Provides minibuffer documentation for the code you're typing into
    the repl.
 
@@ -961,10 +879,6 @@ To start off, first I need to enable lexical binding.
    do just about anything with Git without leaving the comfort of your
    Emacs session.
 
-   #+BEGIN_SRC emacs-lisp
-     (ensure-library magit)
-   #+END_SRC
-
    Show refined diffs in magit. This makes it much easier to see
    /what/ has changed on a line.
 
@@ -1179,10 +1093,6 @@ To start off, first I need to enable lexical binding.
    I switched to Circe from ERC because I couldn't make the
    customizations I wanted to, Circe seems much better at this.
 
-   #+BEGIN_SRC emacs-lisp
-     (ensure-library circe)
-   #+END_SRC
-
    Make sure that Emacs knows these function exist when the file is
    being compiled.
 
@@ -1233,9 +1143,6 @@ To start off, first I need to enable lexical binding.
    Align all nicks.
 
    #+BEGIN_SRC emacs-lisp
-     (ensure-library sermon
-       :path "vendor-lisp/sermon")
-
      (with-eval-after-load 'circe
        (require 'sermon)
        (enable-sermon))
@@ -1264,7 +1171,6 @@ To start off, first I need to enable lexical binding.
    this.
 
    #+BEGIN_SRC emacs-lisp
-     (ensure-library jabber)
      (eval-when-compile (require 'jabber))
    #+END_SRC