gnu: Add rust-tree-magic-0.2.

* gnu/packages/crates-io.scm (rust-tree-magic-0.2): New variable.

Signed-off-by: Nicolas Goaziou <mail@nicolasgoaziou.fr>

gnu/packages/crates-io.scm

@@ -57394,6 +57394,38 @@ be used directly.  See @code{rust-trackable} for more information.")
 recycle bin.")
     (license license:expat)))
 
+(define-public rust-tree-magic-0.2
+  (package
+    (name "rust-tree-magic")
+    (version "0.2.3")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "tree_magic" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+          (base32 "0adndj775gjcvkf7yxdfj3pl39fcdiibswwgff23lm9yrrkr7ndi"))))
+    (build-system cargo-build-system)
+    (arguments
+      `(#:skip-build?
+        #t
+        #:cargo-inputs
+        (("rust-clap" ,rust-clap-2)
+         ("rust-fnv" ,rust-fnv-1)
+         ("rust-lazy-static" ,rust-lazy-static-1)
+         ("rust-nom" ,rust-nom-3)
+         ("rust-num-cpus" ,rust-num-cpus-1)
+         ("rust-parking-lot" ,rust-parking-lot-0.10)
+         ("rust-petgraph" ,rust-petgraph-0.5)
+         ("rust-scoped-threadpool" ,rust-scoped-threadpool-0.1)
+         ("rust-tabwriter" ,rust-tabwriter-1)
+         ("rust-walkdir" ,rust-walkdir-2))))
+    (home-page "https://github.com/aahancoc/tree_magic/")
+    (synopsis "Determines the MIME type")
+    (description "This package determines the MIME type of a file by
+traversing a filetype tree.")
+    (license license:expat)))
+
 (define-public rust-treeline-0.1
   (package
     (name "rust-treeline")