gnu: Add parse-declarations.

* gnu/packages/lisp.scm (parse-declarations): New variable.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu/packages/lisp.scm

@@ -5464,3 +5464,38 @@ the CFFI approach used by burgled-batteries, but has the same goal.")
 
 (define-public ecl-py4cl
   (sbcl-package->ecl-package sbcl-py4cl))
+
+(define-public sbcl-parse-declarations
+  (package
+    (name "sbcl-parse-declarations")
+    (version "1.0.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "http://beta.quicklisp.org/archive/parse-declarations/"
+             "2010-10-06/parse-declarations-20101006-darcs.tgz"))
+       (sha256
+        (base32
+         "0r85b0jfacd28kr65kw9c13dx4i6id1dpmby68zjy63mqbnyawrd"))))
+    (build-system asdf-build-system/sbcl)
+    (arguments
+     `(#:asd-file "parse-declarations-1.0.asd"
+       #:asd-system-name "parse-declarations-1.0"))
+    (home-page "https://common-lisp.net/project/parse-declarations/")
+    (synopsis "Parse, filter, and build declarations")
+    (description
+     "Parse-Declarations is a Common Lisp library to help writing
+macros which establish bindings.  To be semantically correct, such
+macros must take user declarations into account, as these may affect
+the bindings they establish.  Yet the ANSI standard of Common Lisp does
+not provide any operators to work with declarations in a convenient,
+high-level way.  This library provides such operators.")
+    ;; MIT License
+    (license license:expat)))
+
+(define-public cl-parse-declarations
+  (sbcl-package->cl-source-package sbcl-parse-declarations))
+
+(define-public ecl-parse-declarations
+  (sbcl-package->ecl-package sbcl-parse-declarations))