gnu: Add rust-windows-x86-64-gnullvm-0.52.

* gnu/packages/crates-io.scm (rust-windows-x86-64-gnullvm-0.52): New
variable.
(rust-windows-x86-64-gnullvm-0.48): Inherit from
rust-windows-x86-64-gnullvm-0.52.

Signed-off-by: Efraim Flashner <efraim@flashner.co.il>
Change-Id: Ib17c99a5c19e4c9fb5ef84e6dcea0c1dd6091eb2

gnu/packages/crates-io.scm

@@ -92216,8 +92216,30 @@ windows crate.")
                (base32
                 "0m79bhdr54g4h4wh2q8wkjlkypb5wvl7xzhc2csiaqb5yl4z8cdw"))))))
 
+(define-public rust-windows-x86-64-gnullvm-0.52
+  (package
+    (name "rust-windows-x86-64-gnullvm")
+    (version "0.52.0")
+    (source (origin
+              (method url-fetch)
+              (uri (crate-uri "windows_x86_64_gnullvm" version))
+              (file-name (string-append name "-" version ".tar.gz"))
+              (sha256
+               (base32
+                "17lllq4l2k1lqgcnw1cccphxp9vs7inq99kjlm2lfl9zklg7wr8s"))
+              (snippet
+               '(delete-file "lib/libwindows.0.52.0.a"))))
+    (build-system cargo-build-system)
+    (arguments (list #:skip-build? #t))
+    (home-page "https://github.com/microsoft/windows-rs")
+    (synopsis "Code gen support for the windows crate")
+    (description
+     "This package provides code gen support for the windows crate.")
+    (license (list license:expat license:asl2.0))))
+
 (define-public rust-windows-x86-64-gnullvm-0.48
   (package
+    (inherit rust-windows-x86-64-gnullvm-0.52)
     (name "rust-windows-x86-64-gnullvm")
     (version "0.48.0")
     (source (origin
@@ -92229,13 +92251,7 @@ windows crate.")
                 "0lxryz3ysx0145bf3i38jkr7f9nxiym8p3syklp8f20yyk0xp5kq"))
               (snippet
                '(delete-file "lib/libwindows.0.48.0.a"))))
-    (build-system cargo-build-system)
+    (arguments (list #:skip-build? #t))))
-    (arguments (list #:skip-build? #t))
-    (home-page "https://github.com/microsoft/windows-rs")
-    (synopsis "Code gen support for the windows crate")
-    (description
-     "This package provides code gen support for the windows crate.")
-    (license (list license:expat license:asl2.0))))
 
 (define-public rust-windows-x86-64-gnullvm-0.42
   (package