gnu: Add cl-command-line-arguments.

* gnu/packages/lisp-xyz.scm (cl-command-line-arguments,
  ecl-command-line-arguments, sbcl-command-line-arguments): New variables.

Signed-off-by: Guillaume Le Vaillant <glv@posteo.net>

gnu/packages/lisp-xyz.scm

@@ -144,6 +144,35 @@ (define-public cl-net.didierverna.asdf-flv
 (define-public ecl-net.didierverna.asdf-flv
   (sbcl-package->ecl-package sbcl-net.didierverna.asdf-flv))
 
+(define-public sbcl-command-line-arguments
+  (let ((commit "fbac862fb01c0e368141204f3f639920462c23fe")
+        (revision "1"))
+    (package
+      (name "sbcl-command-line-arguments")
+      (version (git-version "2.0.0" revision commit))
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://github.com/fare/command-line-arguments")
+               (commit commit)))
+         (file-name (git-file-name name version))
+         (sha256
+          (base32 "054m1ikndzqf72mb9ajaa64136cwr3bgag4yfbi1574a9vq75mjq"))))
+      (build-system asdf-build-system/sbcl)
+      (home-page "https://github.com/fare/command-line-arguments")
+      (synopsis "Trivial command-line argument parsing library for Common Lisp")
+      (description "This is a library to abstract away the parsing of
+Unix-style command-line arguments.  Use it in conjunction with asdf:program-op
+or cl-launch for portable processing of command-line arguments.")
+      (license license:expat))))
+
+(define-public ecl-command-line-arguments
+  (sbcl-package->ecl-package sbcl-command-line-arguments))
+
+(define-public cl-command-line-arguments
+  (sbcl-package->cl-source-package sbcl-command-line-arguments))
+
 (define-public sbcl-fiveam
   (package
     (name "sbcl-fiveam")