[bug#51903] [PATCH v3] gnu: Add cl-cmn.

[jgart]

Hi all,

I packaged the new tarball that Bill released. It builds successfully now.

Below is the new patch, v3:

Thank you to everyone for the help with this.

Guillaume and/or Pierre,

Here's a minimal example from the manual if you'd like to do a quick test in a 
repl:

```
(cmn (size 24) staff treble c4 w double-bar)
```

or a larger cmn example:

```
(cmn (size 24)
  (system brace 
    (staff treble (meter 6 8) 
      (c4 e. tenuto) (d4 s) (ef4 e sf) 
      (c4 e) (d4 s) (en4 s) (fs4 e (fingering 3))) 
    (staff treble (meter 3 4) 
      (c5 e. marcato) (d5 s bartok-pizzicato) (ef5 e) 
      (c5 e staccato tenuto) (d5 s down-bow) (en5 s) (fs5 e)))
  (system bracket
    (staff bar bass (meter 6 16) 
      (c4 e. wedge) (d4 s staccato) (ef4 e left-hand-pizzicato) 
      (c4 e tenuto accent rfz) (d4 s mordent) (en4 s pp) (fs4 e fermata))))
```

all best,

jgart

* gnu/packages/lisp-xyz.scm (cl-cmn, sbcl-cmn): New variable.
---
 gnu/packages/lisp-xyz.scm | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/gnu/packages/lisp-xyz.scm b/gnu/packages/lisp-xyz.scm
index f891164fc8..3b11e169e6 100644
--- a/gnu/packages/lisp-xyz.scm
+++ b/gnu/packages/lisp-xyz.scm
@@ -19695,6 +19695,33 @@ (define-public sbcl-vernacular
 (define-public cl-vernacular
   (sbcl-package->cl-source-package sbcl-vernacular))
 
+(define-public sbcl-cmn
+  (package
+    (name "sbcl-cmn")
+    (version "2021.11.22")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://ccrma.stanford.edu/software/cmn/cmn";
+                           ".tar.gz"))
+       (sha256
+        (base32
+         "04j1l57cdyfi2zzxqwmvmf1hl899ffgs3bl4r42ba47zsw45kq14"))
+       (file-name (string-append name "-" version))))
+    (build-system asdf-build-system/sbcl)
+    (arguments
+     `(#:asd-systems '("cmn")
+       #:asd-files '("cmn.asd")))
+    (home-page "https://ccrma.stanford.edu/software/cmn/";)
+    (synopsis "Western music notation package written in Common Lisp")
+    (description
+"CMN provides a package of functions to hierarchically describe a musical
+score. When evaluated, the musical score is rendered to an image.")
+    (license license:llgpl)))
+
+(define-public cl-cmn
+  (sbcl-package->cl-source-package sbcl-cmn))
+
 (define-public sbcl-cl-https-everywhere
   ;; No release.
   ;; Don't forget to update the https-everywhere input.
-- 
2.34.0