gnu: rust-system-deps: Add 6.0.2.

* gnu/packages/crates-io.scm (rust-system-deps-6): New variable.
(rust-system-deps-3): Inherit from it.

gnu/packages/crates-io.scm

@@ -61353,8 +61353,46 @@ processors, disks, components and networks.")
     (description "Send log messages to syslog.")
     (license license:expat)))
 
+(define-public rust-system-deps-6
+  (package
+    (name "rust-system-deps")
+    (version "6.0.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "system-deps" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "02g750rlhh7ynqa3p4a3qm7jrkjp3d0jlzrl29z225ch9hf5m951"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:tests? #f                      ;source is missing some test files
+       #:cargo-inputs
+       (("rust-anyhow" ,rust-anyhow-1)
+        ("rust-cfg-expr" ,rust-cfg-expr-0.10)
+        ("rust-heck" ,rust-heck-0.4)
+        ("rust-itertools" ,rust-itertools-0.10)
+        ("rust-pkg-config" ,rust-pkg-config-0.3)
+        ("rust-strum" ,rust-strum-0.21)
+        ("rust-strum-macros" ,rust-strum-macros-0.21)
+        ("rust-thiserror" ,rust-thiserror-1)
+        ("rust-toml" ,rust-toml-0.5)
+        ("rust-version-compare" ,rust-version-compare-0.1))
+       #:cargo-development-inputs
+       (("rust-assert-matches" ,rust-assert-matches-1)
+        ("rust-itertools" ,rust-itertools-0.10)
+        ("rust-lazy-static" ,rust-lazy-static-1))))
+    (home-page "https://github.com/gdesmott/system-deps")
+    (synopsis "Define system dependencies in @file{Cargo.toml}")
+    (description "This crate lets you write system dependencies in
+@file{Cargo.toml} metadata, rather than programmatically in @file{build.rs}.
+This makes those dependencies declarative, so other tools can read them as
+well.")
+    (license (list license:expat license:asl2.0))))
+
 (define-public rust-system-deps-3
   (package
+    (inherit rust-system-deps-6)
     (name "rust-system-deps")
     (version "3.2.0")
     (source
@@ -61381,14 +61419,7 @@ processors, disks, components and networks.")
        #:cargo-development-inputs
        (("rust-assert-matches" ,rust-assert-matches-1)
         ("rust-itertools" ,rust-itertools-0.10)
-        ("rust-lazy-static" ,rust-lazy-static-1))))
-    (home-page "https://github.com/gdesmott/system-deps")
-    (synopsis "Define system dependencies in @file{Cargo.toml}")
-    (description "This crate lets you write system dependencies in
-@file{Cargo.toml} metadata, rather than programmatically in @file{build.rs}.
-This makes those dependencies declarative, so other tools can read them as
-well.")
-    (license (list license:expat license:asl2.0))))
+        ("rust-lazy-static" ,rust-lazy-static-1))))))
 
 (define-public rust-system-deps-1
   (package