[bug#42380] [PATCH v4 2/9] gnu: Add go-github-com-agl-ed25519.

["André Batista" <nandre@riseup.net>]

* gnu/packages/golang.scm (go-github-com-agl-ed25519): New variable.

diff --git a/gnu/packages/golang.scm b/gnu/packages/golang.scm
index 940f38af76..2569d450b2 100644
--- a/gnu/packages/golang.scm
+++ b/gnu/packages/golang.scm
@@ -7058,3 +7058,41 @@ Go.")
 Transports are a means of connecting to the Tor Network from places where it
 is censored.")
    (license license:cc0)))
+
+(define-public go-github-com-agl-ed25519
+  (let ((commit "c4161f4c7483313562781c61b9a20aba73daf9de")
+        (revision "0"))
+    (package
+     (name "go-github-com-agl-ed25519")
+     (version (git-version "0.0.0" revision commit))
+     (source
+      (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/agl/ed25519")
+             (commit commit)))
+       (file-name (string-append name "-" version "-checkout"))
+       (sha256
+        (base32
+         "1wjlbzi0w63rmlzgk3amw274wsl0zhcn4yx2lraffbkhqappahxc"))))
+     (build-system go-build-system)
+     (arguments
+      '(#:import-path "github.com/agl/ed25519"
+        #:phases
+        (modify-phases %standard-phases
+          (add-before 'reset-gzip-timestamps 'make-files-writable
+            (lambda* (#:key outputs #:allow-other-keys)
+              (let ((out (assoc-ref outputs "out")))
+                   (for-each (lambda (file) (chmod file #o644))
+                     (find-files out "\\.gz"))
+             #t))))))
+     (home-page "https://github.com/agl/ed25519")
+     (synopsis "Go library for ed25519 public-key signatures")
+     (description "This library is a Go implementation of ed25519 public-key
+signature system which was designed to be faster than previous digital signature
+systems without sacrificing security.  It is currently used in the
+implementation of obfs4 and should be not be used on newer projects since it
+is unmaintained.  Newer software should use x-crypto instead.")
+     ;; License file is referred but it is missing. Probably because the
+     ;; author decided to discontinue the project.
+     (license (license:non-copyleft "file://ed25519.go")))))
-- 
2.31.1