gnu: Add hu.dwim.asdf.

* gnu/packages/lisp.scm (cl-hu.dwim.asdf, ecl-hu.dwim.asdf, sbcl-hu.dwim.asdf): New variables.

gnu/packages/lisp.scm

@@ -1584,3 +1584,31 @@ consistent across multiple Common Lisp implementations.")
 
 (define-public ecl-trivial-features
   (sbcl-package->ecl-package sbcl-trivial-features))
+
+(define-public sbcl-hu.dwim.asdf
+  (let ((commit "170b0e4fdde3df0bc537327e7600575daac9e141"))
+    (package
+      (name "sbcl-hu.dwim.asdf")
+      (version (git-version "0.0.0" "1" commit))
+      (source
+       (origin
+         (method git-fetch)
+         (uri
+          (git-reference
+           (url "https://github.com/nixeagle/hu.dwim.asdf")
+           (commit commit)))
+         (sha256
+          (base32 "10ax7p8y6vjqxzcq125p62kf68zi455a65ysgk0kl1f2v839c33v"))
+         (file-name (git-file-name "hu.dwim.asdf" version))))
+      (build-system asdf-build-system/sbcl)
+      (home-page "https://hub.darcs.net/hu.dwim/hu.dwim.asdf")
+      (synopsis "Extensions to ASDF")
+      (description "Various ASDF extensions such as attached test and
+documentation system, explicit development support, etc.")
+      (license license:public-domain))))
+
+(define-public cl-hu.dwim.asdf
+  (sbcl-package->cl-source-package sbcl-hu.dwim.asdf))
+
+(define-public ecl-hu.dwim.asdf
+  (sbcl-package->ecl-package sbcl-hu.dwim.asdf))