gnu: Add libdeflate.

* gnu/packages/compression.scm (libdeflate): New variable.

gnu/packages/compression.scm

@@ -2651,6 +2651,42 @@ with their error correction data losslessly rearranged for better compression,
 to their original, binary CD format.")
     (license license:gpl3+)))
 
+(define-public libdeflate
+  (package
+    (name "libdeflate")
+    (version "1.8")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/ebiggers/libdeflate")
+                    (commit (string-append "v" version))))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "0nw1zhr2s6ffcc3s0n5wsshvjb6pmybwapagli135zzn2fx1pdiz"))))
+    (build-system gnu-build-system)
+    (arguments
+     `(#:make-flags
+       (list (string-append "CC=" ,(cc-for-target))
+             (string-append "PREFIX=" (assoc-ref %outputs "out")))
+       #:phases
+       (modify-phases %standard-phases
+         (delete 'configure))))
+    (inputs
+     `(("zlib" ,zlib)))
+    (home-page "https://github.com/ebiggers/libdeflate")
+    (synopsis "Library for DEFLATE/zlib/gzip compression and decompression")
+    (description "Libdeflate is a library for fast, whole-buffer DEFLATE-based
+compression and decompression.  The supported formats are:
+
+@enumerate
+@item DEFLATE (raw)
+@item zlib (a.k.a. DEFLATE with a zlib wrapper)
+@item gzip (a.k.a. DEFLATE with a gzip wrapper)
+@end enumerate
+")
+    (license license:expat)))
+
 (define-public tarlz
   (package
     (name "tarlz")