Recommended structure for small-ish Coalton project?

[ornamentist]

I'm new to Common Lisp and Coalton, so this may be a silly question.

Is there an idiomatic way to setup a small-ish Coalton project (let's say it's called "numbers") with ASDF and Common Lisp packages?

In the project directory root I would have a file numbers.asd, containing:

(defsystem "numbers"

  ;; various system metadata fields

  :depends-on ("coalton")

  :pathname "src/"

  :serial t

  :components ((:file "package")
               (:file "main")))

Then I'd have a src directory containing the files package.lisp and main.lisp. The package.lisp file seems to be a convention for defining the packages used in the rest of the source files? It would contain:

(in-package #:cl-user)

(defpackage #:numbers
  (:documentation "...")
  (:use #:coalton #:coalton-library)
  (:export ...))

And the main.lisp file which exports symbols from the numbers package would have:

(cl:in-package #:numbers)

(coalton-toplevel ;; Coalton specific forms...
  )

This is all assuming I've manually installed Coalton somewhere that Quicklisp can find it.

If I didn't want the common package.lisp file, but one package per file, what would the directory and (defpackage... structure look like?

Any advice much appreciated.

[stylewarning]

I recommend actually making two packages, one for CL code and one for Coalton code:

(cl:in-package #:cl-user)

(defpackage #:numbers.cl
  (:use #:cl)
  (export ...))

(defpackage #:numbers 
  (:use #:coalton #:coalton-library)
  (:export ...))

That way, you can easily write Lisp functions as needed and use them within Coalton, without having to prefix a lot of stuff. Your typical Coalton file would look like

(cl:in-package #:numbers.cl)

;; lisp code

(cl:in-package #:numbers)

;; coalton code

If you wanted one package per file (a style I've never really appreciated), you'd do the same, just put package definitions at the top of the file. Directory structure would be however you want; Coalton wouldn't require anything.

[ornamentist]

Very neat -- thanks for the suggestion.