gnu: Add go-github-com-quic-go-qtls-go1-20.

* gnu/packages/golang.scm (go-github-com-quic-go-qtls-go1-20): New variable.

Change-Id: Id7b4bfc88e446e974af31026c7717dc732cd09a6
Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu/packages/golang.scm

@@ -7693,6 +7693,32 @@ implementation of generics.")
     (home-page "https://github.com/cheekybits/genny/")
     (license license:expat)))
 
+(define-public go-github-com-quic-go-qtls-go1-20
+  (package
+    (name "go-github-com-quic-go-qtls-go1-20")
+    (version "0.3.4")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/quic-go/qtls-go1-20")
+             (commit (string-append "v" version))))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32 "0fl3yv1w8cygag3lav45vvzb4k9i72p92x13wcq0xn13wxirzirn"))))
+    (build-system go-build-system)
+    (arguments
+     (list
+      #:import-path "github.com/quic-go/qtls-go1-20"
+      #:go go-1.20))
+    (propagated-inputs (list go-golang-org-x-crypto go-golang-org-x-sys))
+    (synopsis "TLS 1.3 for QUIC")
+    (description
+     "Go standard library TLS 1.3 implementation, modified for QUIC.  For
+Go 1.20.")
+    (home-page "https://github.com/quic-go/qtls-go1-20")
+    (license license:expat)))
+
 (define-public go-github-com-quic-go-quic-go
   (package
     (name "go-github-com-quic-go-quic-go")