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

[jgart]

Hi Guixers,

This is a WIP.

I could use some help with it.

There are no releases and no version control.

CMN was written in the 90s and is still used today atleast by slippery-chicken 
(see below).

It currently builds successfully.

https://en.wikipedia.org/wiki/Common_Music_Notation  
https://ccrma.stanford.edu/software/cmn/cmn/cmn.html  

cmn is a dependency of slippery-chicken: 

https://github.com/mdedwards/slippery-chicken
http://michael-edwards.org/sc/

* gnu/packages/music.scm (cl-cmn): New variable.
---
 gnu/packages/music.scm | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/gnu/packages/music.scm b/gnu/packages/music.scm
index 60cff2cc28..ee130d7b54 100644
--- a/gnu/packages/music.scm
+++ b/gnu/packages/music.scm
@@ -66,6 +66,7 @@ (define-module (gnu packages music)
   #:use-module (guix download)
   #:use-module (guix git-download)
   #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (guix build-system asdf)
   #:use-module (guix build-system gnu)
   #:use-module (guix build-system ant)
   #:use-module (guix build-system cmake)
@@ -6911,6 +6912,26 @@ (define-public shiru-lv2
       (home-page "http://shiru.untergrund.net/software.shtml";)
       (license license:wtfpl2))))
 
+(define-public cl-cmn
+  (package
+    (name "cl-cmn")
+    (version "0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://ccrma.stanford.edu/software/cmn/cmn";
+                           ".tar.gz"))
+       (sha256
+        (base32
+         "1f4ivhg1vq2fwklmwjj30bj7ij1yab45rnjjwps3qpsh0lpd6yj3"))))
+    (build-system asdf-build-system/source)
+    (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:expat)))
+
 (define-public a2jmidid
   (package
     (name "a2jmidid")
-- 
2.33.1