gnu: Add rust-trust-dns-rustls-0.18.

* gnu/packages/crates-io.scm (rust-trust-dns-rustls-0.18): New variable.

gnu/packages/crates-io.scm

@@ -37197,6 +37197,36 @@ other queries.")
 extension for the Trust-DNS client to use rustls for TLS.")
     (license (list license:expat license:asl2.0))))
 
+(define-public rust-trust-dns-rustls-0.18
+  (package
+    (inherit rust-trust-dns-rustls-0.19)
+    (name "rust-trust-dns-rustls")
+    (version "0.18.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "trust-dns-rustls" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "19vhb0xsyr0wy4p0liwhv4rqmwv6szfmmid6439gq7wah1x1hzp4"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:tests? #false                  ;missing file
+       #:cargo-inputs
+       (("rust-futures" ,rust-futures-0.3)
+        ("rust-log" ,rust-log-0.4)
+        ("rust-rustls" ,rust-rustls-0.16)
+        ("rust-tokio" ,rust-tokio-0.2)
+        ("rust-tokio-rustls" ,rust-tokio-rustls-0.12)
+        ("rust-trust-dns-proto" ,rust-trust-dns-proto-0.18)
+        ("rust-webpki" ,rust-webpki-0.21))
+       #:cargo-development-inputs
+       (("rust-openssl" ,rust-openssl-0.10))))
+    (native-inputs
+     `(("pkg-config" ,pkg-config)))
+    (inputs
+     `(("openssl" ,openssl)))))
+
 (define-public rust-trust-dns-rustls-0.6
   (package
     (inherit rust-trust-dns-rustls-0.19)