gnu: Add rust-cssparser-0.27.

* gnu/packages/crates-io.scm (rust-cssparser-0.27): New variable.
(rust-cssparser-0.25): Inherit from rust-cssparser-0.27.

gnu/packages/crates-io.scm

@@ -4471,8 +4471,46 @@ Code} (MAC) algorithms.")
         ("rust-generic-array" ,rust-generic-array-0.12)
         ("rust-subtle" ,rust-subtle-1.0))))))
 
+(define-public rust-cssparser-0.27
+  (package
+    (name "rust-cssparser")
+    (version "0.27.2")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "cssparser" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "02nbm690rmkaz1ca0383qq7mc1g066w3s85f17pdihnda79njjvm"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:tests? #f  ; Not all files included in the tarball.
+       #:cargo-inputs
+       (("rust-cssparser-macros" ,rust-cssparser-macros-0.6)
+        ("rust-dtoa-short" ,rust-dtoa-short-0.3)
+        ("rust-itoa" ,rust-itoa-0.4)
+        ("rust-matches" ,rust-matches-0.1)
+        ("rust-phf" ,rust-phf-0.8)
+        ("rust-proc-macro2" ,rust-proc-macro2-1.0)
+        ("rust-quote" ,rust-quote-1.0)
+        ("rust-serde" ,rust-serde-1.0)
+        ("rust-smallvec" ,rust-smallvec-1)
+        ("rust-syn" ,rust-syn-1.0))
+       #:cargo-development-inputs
+       (("rust-difference" ,rust-difference-2.0)
+        ("rust-encoding-rs" ,rust-encoding-rs-0.8)
+        ("rust-serde-json" ,rust-serde-json-1.0))))
+    (home-page "https://github.com/servo/rust-cssparser")
+    (synopsis "Rust implementation of CSS Syntax Level 3")
+    (description
+     "This package contains a Rust implementation of CSS Syntax Level 3.")
+    (license license:mpl2.0)))
+
 (define-public rust-cssparser-0.25
   (package
+    (inherit rust-cssparser-0.27)
     (name "rust-cssparser")
     (version "0.25.9")
     (source
@@ -4484,7 +4522,6 @@ Code} (MAC) algorithms.")
         (sha256
          (base32
           "03klvpdzsk4cyh8k0dbnlngzafv7gqywqrnsqqb3gfmrxyj8rqgv"))))
-    (build-system cargo-build-system)
     (arguments
      `(#:tests? #f      ; Some test files missing.
        #:cargo-inputs
@@ -4504,7 +4541,7 @@ Code} (MAC) algorithms.")
        #:cargo-development-inputs
        (("rust-difference" ,rust-difference-2.0)
         ("rust-encoding-rs" ,rust-encoding-rs-0.8)
-        ("rust-serde-json" ,rust-serde-json-1.0))))
+        ("rust-serde-json" ,rust-serde-json-1.0))))))
 
 (define-public rust-cssparser-macros-0.6
   (package