gnu: Add go-github-com-pquerna-cachecontrol.

* gnu/packages/golang.scm (go-github-com-pquerna-cachecontrol): New variable.

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

gnu/packages/golang.scm

@@ -3646,6 +3646,31 @@ developed by the Go team.  It provides IDE features to any LSP-compatible
 editor.")
     (license license:bsd-3)))
 
+(define-public go-github-com-pquerna-cachecontrol
+  (package
+    (name "go-github-com-pquerna-cachecontrol")
+    (version "0.2.0")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/pquerna/cachecontrol")
+                    (commit (string-append "v" version))))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "0d5zgv2w0sinh9m41pw3n015zzyabk7awgwwga7nmhjz452c9r5n"))))
+    (build-system go-build-system)
+    (arguments
+     (list #:import-path "github.com/pquerna/cachecontrol"))
+    (native-inputs
+     (list go-github-com-stretchr-testify))
+    (home-page "https://github.com/pquerna/cachecontrol")
+    (synopsis "Golang HTTP Cache-Control Parser and Interpretation")
+    (description
+     "This package implements RFC 7234 Hypertext Transfer Protocol (HTTP/1.1):
+Caching.")
+    (license license:asl2.0)))
+
 (define-public go-github-com-protonmail-go-crypto
   (package
     (name "go-github-com-protonmail-go-crypto")