gnu: Add rust-embed-resource-2.

* gnu/packages/crates-windows.scm (rust-embed-resource-2): New variable.
(rust-embed-resource-1): Inherit from rust-embed-resource-2.

Change-Id: Iee1cbaeda0df558d4b19c00094b13405aabf7fb8

gnu/packages/crates-windows.scm

@@ -230,8 +230,35 @@ they can possibly access, and doesn't break any paths for UNC-aware
 programs.")
     (license (list license:cc0 license:expat-0 license:asl2.0))))
 
+(define-public rust-embed-resource-2
+  (package
+    (name "rust-embed-resource")
+    (version "2.4.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "embed-resource" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "1cicrqlblz5xf4ns7yk4aifpskbvvvg436ls4c93h77f4zlc6k7m"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs (("rust-cc" ,rust-cc-1)
+                       ("rust-rustc-version" ,rust-rustc-version-0.4)
+                       ("rust-toml" ,rust-toml-0.8)
+                       ("rust-vswhom" ,rust-vswhom-0.1)
+                       ("rust-winreg" ,rust-winreg-0.51))))
+    (home-page "https://github.com/nabijaczleweli/rust-embed-resource")
+    (synopsis
+     "Cargo library to handle compilation and inclusion of Windows resources")
+    (description
+     "This package provides a Cargo library to handle compilation and
+inclusion of Windows resources in the most resilient fashion imaginable.")
+    (license license:expat)))
+
 (define-public rust-embed-resource-1
   (package
+    (inherit rust-embed-resource-2)
     (name "rust-embed-resource")
     (version "1.8.0")
     (source
@@ -241,21 +268,13 @@ programs.")
        (file-name (string-append name "-" version ".tar.gz"))
        (sha256
         (base32 "0piayd947h4dswbpwqs02zq42y4kfzxcl52wmr7pbr07dj3vnap6"))))
-    (build-system cargo-build-system)
     (arguments
      `(#:cargo-inputs
        (("rust-cc" ,rust-cc-1)
         ("rust-rustc-version" ,rust-rustc-version-0.4)
         ("rust-toml" ,rust-toml-0.5)
         ("rust-vswhom" ,rust-vswhom-0.1)
-        ("rust-winreg" ,rust-winreg-0.10))))
+        ("rust-winreg" ,rust-winreg-0.10))))))
-    (home-page "https://github.com/nabijaczleweli/rust-embed-resource")
-    (synopsis
-     "Cargo library to handle compilation and inclusion of Windows resources")
-    (description
-     "This package provides a Cargo library to handle compilation and
-inclusion of Windows resources in the most resilient fashion imaginable.")
-    (license license:expat)))
 
 (define-public rust-gdi32-sys-0.2
   (package