gnu: Add rust-bindgen-0.53.

* gnu/packages/crates-io.scm (rust-bindgen-0.53): New variable.
(rust-bindgen-0.52): Inherit from rust-bindgen-0.53.

gnu/packages/crates-io.scm

@@ -1327,8 +1327,62 @@ (define-public rust-bincode-1
 that uses Serde for transforming structs into bytes and vice versa!")
     (license license:expat)))
 
+(define-public rust-bindgen-0.53
+  (package
+    (name "rust-bindgen")
+    (version "0.53.3")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "bindgen" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1rc9grfd25bk5b2acmqljhx55ndbzmh7w8b3x6q707cb4s6rfan7"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-bitflags" ,rust-bitflags-1)
+        ("rust-cexpr" ,rust-cexpr-0.4)
+        ("rust-cfg-if" ,rust-cfg-if-0.1)
+        ("rust-clang-sys" ,rust-clang-sys-0.29)
+        ("rust-clap" ,rust-clap-2)
+        ("rust-env-logger" ,rust-env-logger-0.7)
+        ("rust-lazy-static" ,rust-lazy-static-1)
+        ("rust-lazycell" ,rust-lazycell-1.2)
+        ("rust-log" ,rust-log-0.4)
+        ("rust-peeking-take-while" ,rust-peeking-take-while-0.1)
+        ("rust-proc-macro2" ,rust-proc-macro2-1.0)
+        ("rust-quote" ,rust-quote-1.0)
+        ("rust-regex" ,rust-regex-1)
+        ("rust-rustc-hash" ,rust-rustc-hash-1.1)
+        ("rust-shlex" ,rust-shlex-0.1)
+        ("rust-which" ,rust-which-3.1))
+       #:cargo-development-inputs
+       (("rust-clap" ,rust-clap-2)
+        ("rust-diff" ,rust-diff-0.1)
+        ("rust-shlex" ,rust-shlex-0.1))
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'set-environmental-variable
+           (lambda* (#:key inputs #:allow-other-keys)
+             (let ((clang (assoc-ref inputs "libclang")))
+               (setenv "LIBCLANG_PATH"
+                       (string-append clang "/lib")))
+             #t)))))
+    (inputs
+     `(("libclang" ,clang)))
+    (home-page "https://rust-lang.github.io/rust-bindgen/")
+    (synopsis
+     "Automatically generates Rust FFI bindings to C and C++ libraries")
+    (description
+     "Automatically generates Rust FFI bindings to C and C++ libraries.")
+    (license license:bsd-3)))
+
 (define-public rust-bindgen-0.52
   (package
+    (inherit rust-bindgen-0.53)
     (name "rust-bindgen")
     (version "0.52.0")
     (source
@@ -1340,7 +1394,6 @@ (define-public rust-bindgen-0.52
         (sha256
          (base32
           "0mzy2gjiaggl602yn4a11xzrxfj18kl7pwqa5yv32njkxd257j7i"))))
-    (build-system cargo-build-system)
     (arguments
      `(#:cargo-inputs
        (("rust-shlex" ,rust-shlex-0.1)
@@ -1371,15 +1424,7 @@ (define-public rust-bindgen-0.52
              (let ((clang (assoc-ref inputs "libclang")))
                (setenv "LIBCLANG_PATH"
                        (string-append clang "/lib")))
-             #t)))))
-    (inputs
-     `(("libclang" ,clang)))
-    (home-page "https://rust-lang.github.io/rust-bindgen/")
-    (synopsis
-     "Automatically generates Rust FFI bindings to C and C++ libraries")
-    (description
-     "Automatically generates Rust FFI bindings to C and C++ libraries.")
-    (license license:bsd-3)))
+             #t)))))))
 
 (define-public rust-bindgen-0.51
   (package