gnu: Add rust-libflate-lz77-1.

* gnu/packages/crates-io.scm (rust-libflate-lz77-1): New variable.

gnu/packages/crates-io.scm

@@ -13079,6 +13079,27 @@ macros on libc without stdlib.")
 algorithm and related formats (ZLIB, GZIP).")
     (license license:expat)))
 
+(define-public rust-libflate-lz77-1
+  (package
+    (name "rust-libflate-lz77")
+    (version "1.0.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "libflate_lz77" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "06xir79gmp97mdnlnjclk5zlzgkf5s6qvwilcd4gq9j9gngz11ij"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-development-inputs
+       (("rust-libflate" ,rust-libflate-0.1))))
+    (home-page "https://github.com/sile/libflate")
+    (synopsis "LZ77 encoder for libflate crate")
+    (description "This package provides a LZ77 encoder for libflate crate.")
+    (license license:expat)))
+
     (build-system cargo-build-system)
     (arguments
      `(#:cargo-inputs