gnu: Add rust-ruzstd-0.6.

* gnu/packages/crates-compression.scm (rust-ruzstd-0.6): New variable.

Change-Id: I18414a040c94572043bc40a893fdb531e19d8837
Signed-off-by: Steve George <steve@futurile.net>

gnu/packages/crates-compression.scm

@@ -1346,6 +1346,39 @@ streaming API for miniz_oxide.")
      "This package provides a decoder for the zstd compression format.")
     (license license:expat)))
 
+(define-public rust-ruzstd-0.6
+  (package
+    (inherit rust-ruzstd-0.7)
+    (name "rust-ruzstd")
+    (version "0.6.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "ruzstd" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "0yygqpar2x910lnii4k5p43aj4943hlnxpczmqhsfddmxrqa8x2i"))))
+    (arguments
+     `(#:cargo-test-flags
+       '("--release" "--"
+         ;; not all files included
+         "--skip=tests::decode_corpus::test_decode_corpus_files"
+         "--skip=tests::dict_test::test_dict_decoding"
+         "--skip=tests::fuzz_regressions::test_all_artifacts"
+         "--skip=tests::test_block_header_reading"
+         "--skip=tests::test_decode_from_to"
+         "--skip=tests::test_frame_decoder"
+         "--skip=tests::test_frame_header_reading"
+         "--skip=tests::test_specific_file"
+         "--skip=tests::test_streaming")
+       #:cargo-inputs
+         (("rust-byteorder" ,rust-byteorder-1)
+          ("rust-derive-more" ,rust-derive-more-0.99)
+          ("rust-twox-hash" ,rust-twox-hash-1))
+       #:cargo-development-inputs
+         (("rust-criterion" ,rust-criterion-0.5)
+          ("rust-rand" ,rust-rand-0.8))))))
+
 (define-public rust-ruzstd-0.5
   (package
     (inherit rust-ruzstd-0.7)