Working on macOS 13.1 using Clozure CL
# Using MacPorts and ccl64

Not a bug, but and update too anyone interested `Sketch` seems run fine on macOS 13.1 using Clozure CL.

Steps I took, to the best of my recollection. Install `Clozure CL 1.12.1` from MacPorts. (I haven't tested with SBCL, yet).

```shell
sudi port install ccl
```

Install Quicklisp, enter the `ccl64` REPL run the setup.

```shell
curl -O https://beta.quicklisp.org/quicklisp.lisp

ccl64 --load quicklisp.lisp

(quicklisp-quickstart:install)

# If you are using Emacs and SLIME
(ql:quickload "quicklisp-slime-helper")

# Add this to your init.el
(load (expand-file-name "~/quicklisp/slime-helper.el"))
(setq inferior-lisp-program "ccl64")
```

Open a REPL in Emacs `M-x slime` and load `Sketch`.

```lisp
CL-USER> (ql:quickload :sketch)
```

Now install the `SDL2` external/foreign dependencies.

```shell
sudo port install libsdl2
sudo port install libsdl2_image
sudo port install libsdl2_ttfd
```

Now it should be possible to load the examples.

```lisp
CL-USER> (ql:quickload :sketch-examples)
CL-USER> (make-instance 'sketch-examples:hello-world)
CL-USER> (make-instance 'sketch-examples:sinewave)
CL-USER> (make-instance 'sketch-examples:brownian)
CL-USER> (make-instance 'sketch-examples:life)
```

## Versions

| macOS                   | 13.1 (Intel 64) |
| GNU Emacs               | 30.0.50         |
| SLIME                   | 2.27            |
| Sketch                  | 20221106        |
| ccl                     | 1.12.1          |
| libsdl2                 | 2.26.2          |
| libsdl2image 		  | 2.6.2           |
| libsdl2ttf   		  | 2.20.1          |

## Screenshots
![sketch-macOS](https://user-images.githubusercontent.com/17638455/213884857-6f6af44c-0307-4ba2-a44c-73eee569dc2d.png)
