gnu: Add rust-bindgen-0.55.

* gnu/packages/crates-io.scm (rust-bindgen-0.55): New variable.
(rust-bindgen-0.54): Inherit from rust-bindgen-0.55.

gnu/packages/crates-io.scm

@@ -1583,8 +1583,63 @@ tracebacks.")
 that uses Serde for transforming structs into bytes and vice versa!")
     (license license:expat)))
 
+(define-public rust-bindgen-0.55
+  (package
+    (name "rust-bindgen")
+    (version "0.55.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "bindgen" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0hxlvy9q9984rr3rqaxwmgxjrd9wh11mcc161hv3shz6b7jkrcbm"))))
+    (build-system cargo-build-system)
+    (inputs
+     `(("clang" ,clang)))
+    (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-1)
+        ("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)
+        ("rust-log" ,rust-log-0.4)
+        ("rust-peeking-take-while" ,rust-peeking-take-while-0.1)
+        ("rust-proc-macro2" ,rust-proc-macro2-1)
+        ("rust-quote" ,rust-quote-1)
+        ("rust-regex" ,rust-regex-1)
+        ("rust-rustc-hash" ,rust-rustc-hash-1)
+        ("rust-shlex" ,rust-shlex-0.1)
+        ("rust-which" ,rust-which-3))
+       #: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 'enable-unstable-features
+           (lambda _
+             (setenv "RUSTC_BOOTSTRAP" "1")
+             #t))
+         (add-before 'configure 'configure-clang
+           (lambda* (#:key inputs #:allow-other-keys)
+             (setenv "LIBCLANG_PATH" (string-append (assoc-ref inputs "clang")
+                                                    "/lib"))
+             #t)))))
+    (home-page "https://rust-lang.github.io/rust-bindgen/")
+    (synopsis "Generate Rust FFI bindings to C and C++ libraries.")
+    (description "This package can be used to automatically generate Rust FFI
+bindings to C and C++ libraries.")
+    (license license:bsd-3)))
+
 (define-public rust-bindgen-0.54
   (package
+    (inherit rust-bindgen-0.55)
     (name "rust-bindgen")
     (version "0.54.1")
     (source
@@ -1629,13 +1684,7 @@ that uses Serde for transforming structs into bytes and vice versa!")
                        (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)))
+     `(("libclang" ,clang)))))
 
 (define-public rust-bindgen-0.53
   (package