gnu: Add sbcl-json-mop.

* gnu/packages/lisp-xyz.scm (sbcl-json-mop, ecl-json-mop, cl-json-mop): New variables.

Change-Id: If61af647feeb8d786c025d712310358bfa52c9dc
Signed-off-by: jgart <jgart@dismail.de>

gnu/packages/lisp-xyz.scm

@@ -19767,6 +19767,44 @@ and macros, primarily for software projects written in CL by the author.")
 (define-public clasp-jpl-util
   (sbcl-package->clasp-package sbcl-jpl-util))
 
+(define-public sbcl-json-mop
+  (let ((commit "66705776dec7056fabba09646d726782baf019d9")
+        (revision "0"))
+    (package
+      (name "sbcl-json-mop")
+      (version (git-version "0.0.0" revision commit))
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://github.com/gschjetne/json-mop")
+               (commit commit)))
+         (file-name (git-file-name name commit))
+         (sha256
+          (base32 "1q6mmq64hf4v448bnzfh8nxsxg5h18a9snh785r1fnvv1aij3fi1"))))
+      (build-system asdf-build-system/sbcl)
+      (arguments
+       (list
+        #:asd-systems ''("json-mop")))
+      (native-inputs
+       (list ))
+      (inputs
+       (list sbcl-closer-mop
+             sbcl-yason
+             sbcl-anaphora))
+      (home-page "https://github.com/gschjetne/json-mop")
+      (synopsis "Metaclass for bridging CLOS and JSON")
+      (description "Small library aiming to cut down time spent moving data
+between CLOS and JSON objects.  It depends on YASON and it should be possible to
+use it alongside straight calls to functions from YASON.")
+      (license license:expat))))
+
+(define-public ecl-json-mop
+  (sbcl-package->ecl-package sbcl-json-mop))
+
+(define-public cl-json-mop
+  (sbcl-package->cl-source-package sbcl-json-mop))
+
 (define-public sbcl-json-streams
   (let ((commit "5da012e8133affbf75024e7500feb37394690752")
         (revision "1"))