11/45: gnu: Add ocaml-duration.

[guix-commits]

cbaines pushed a commit to branch master
in repository guix.

commit 7d15ed9c825d82ab4841de281d7854f386ee98dd
Author: raingloom <raingloom@riseup.net>
AuthorDate: Wed Feb 15 23:00:00 2023 +0100

    gnu: Add ocaml-duration.
    
    * gnu/packages/ocaml.scm (ocaml-duration): New variable.
    
    Signed-off-by: Christopher Baines <mail@cbaines.net>
---
 gnu/packages/ocaml.scm | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/gnu/packages/ocaml.scm b/gnu/packages/ocaml.scm
index 892a247883..0093ef0032 100644
--- a/gnu/packages/ocaml.scm
+++ b/gnu/packages/ocaml.scm
@@ -3776,6 +3776,30 @@ mobile platforms.  Code can be developed on a normal OS 
and then compiled into
 a fully-standalone, specialised unikernel.")
     (license license:isc)))
 
+(define-public ocaml-duration
+  (package
+    (name "ocaml-duration")
+    (version "0.2.1")
+    (source (origin
+              (method git-fetch)
+              (uri
+               (git-reference
+                (url "https://github.com/hannesm/duration/";)
+                (commit (string-append "v" version))))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "0vvxi0ipxmdz1k4h501brvccniwf3wpc32djbccyyrzraiz7qkff"))))
+    (build-system dune-build-system)
+    (native-inputs (list ocaml-alcotest))
+    (home-page "https://github.com/hannesm/duration";)
+    (synopsis "Conversions to various time units")
+    (description
+     "This package provides a duration is represented in nanoseconds as an
+unsigned 64 bit integer.  This has a range of up to 584 years.  Functions
+provided check the input and raise on negative or out of bound input.")
+    (license license:isc)))
+
 (define-public ocaml-ocurl
   (package
     (name "ocaml-ocurl")