gnu: Add rust-windows-x86-64-gnullvm-0.48.

* gnu/packages/crates-io.scm (rust-windows-x86-64-gnullvm-0.48): New
variable.
(rust-windows-x86-64-gnullvm-0.42): Inherit from
rust-windows-x86-64-gnullvm-0.48.

gnu/packages/crates-io.scm

@@ -73719,8 +73719,30 @@ windows crate.")
                (base32
                 "0m79bhdr54g4h4wh2q8wkjlkypb5wvl7xzhc2csiaqb5yl4z8cdw"))))))
 
+(define-public rust-windows-x86-64-gnullvm-0.48
+  (package
+    (name "rust-windows-x86-64-gnullvm")
+    (version "0.48.0")
+    (source (origin
+              (method url-fetch)
+              (uri (crate-uri "windows-x86_64-gnullvm" version))
+              (file-name (string-append name "-" version ".tar.gz"))
+              (sha256
+               (base32
+                "0lxryz3ysx0145bf3i38jkr7f9nxiym8p3syklp8f20yyk0xp5kq"))
+              (snippet
+               '(delete-file "lib/libwindows.0.48.0.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-0.42
   (package
+    (inherit rust-windows-x86-64-gnullvm-0.48)
     (name "rust-windows-x86-64-gnullvm")
     (version "0.42.2")
     (source (origin
@@ -73732,13 +73754,7 @@ windows crate.")
                 "18wl9r8qbsl475j39zvawlidp1bsbinliwfymr43fibdld31pm16"))
               (snippet
                '(delete-file "lib/libwindows.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))))
+    (arguments (list #:skip-build? #t))))
 
 (define-public rust-windows-x86-64-msvc-0.42
   (package