gnu: rust-proc-macro2-1: Update to 1.0.43.

* gnu/packages/crates-io.scm (rust-proc-macro2-1): Update to 1.0.43.
[arguments]: Replace rust-unicode-xid with rust-unicode-ident.
[inputs]: Remove rust-unicode-xid.
[home-page]: Update to new home.

gnu/packages/crates-io.scm

@@ -45949,7 +45949,7 @@ in your code.")
 (define-public rust-proc-macro2-1
   (package
     (name "rust-proc-macro2")
-    (version "1.0.32")
+    (version "1.0.43")
     (source
       (origin
         (method url-fetch)
@@ -45957,17 +45957,15 @@ in your code.")
         (file-name (string-append name "-" version ".tar.gz"))
         (sha256
          (base32
-          "0hqbxlvhiaybakl1gai3mgps1dxsmxricxsr2rfdrh222z0qql5s"))))
+          "1avvpf4qki8mg2na60yr3afbsfl5p6vllac6516xgwy93g3a4b0a"))))
     (build-system cargo-build-system)
     (arguments
      `(#:cargo-test-flags '("--lib")
        #:cargo-inputs
-       (("rust-unicode-xid" ,rust-unicode-xid-0.2))
+       (("rust-unicode-ident" ,rust-unicode-ident-1))
        #:cargo-development-inputs
        (("rust-quote" ,rust-quote-1))))
-    (inputs
-     (list rust-unicode-xid-0.2))
-    (home-page "https://github.com/alexcrichton/proc-macro2")
+    (home-page "https://github.com/dtolnay/proc-macro2")
     (synopsis "Stable implementation of the upcoming new `proc_macro` API")
     (description "This package provides a stable implementation of the upcoming new
 `proc_macro` API.  Comes with an option, off by default, to also reimplement itself