On Wed, Aug 04 2021, pukkamustard wrote:

> * gnu/packages/ocaml.scm (ocaml-mirage-crypto-rng): New variable.
> ---
>  gnu/packages/ocaml.scm | 20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)
>
> diff --git a/gnu/packages/ocaml.scm b/gnu/packages/ocaml.scm
> index f7956fe216..6af9bedc65 100644
> --- a/gnu/packages/ocaml.scm
> +++ b/gnu/packages/ocaml.scm
> @@ -7442,6 +7442,26 @@ between various time units.")
>  as (C-like structures using @code{ocaml-cstruct}) to OCaml native numbers.")
>      (license license:isc)))
>  
> +(define-public ocaml-mirage-crypto-rng
> +  (package
> +    (inherit ocaml-mirage-crypto)
> +    (name  "ocaml-mirage-crypto-rng")
> +    (arguments `(#:package "mirage-crypto-rng"
> +                 #:test-target "."))
> +    (propagated-inputs
> +     `(("ocaml-duration" ,ocaml-duration)
> +       ("ocaml-cstruct" ,ocaml-cstruct)
> +       ("ocaml-logs" ,ocaml-logs)
> +       ("ocaml-mirage-crypto" ,ocaml-mirage-crypto)
> +       ("ocaml-mtime" ,ocaml-mtime)
> +       ("ocaml-lwt" ,ocaml-lwt)))
> +    (native-inputs
> +     `(("ocaml-ounit" ,ocaml-ounit)
> +       ("ocaml-randomconv" ,ocaml-randomconv)))
> +    (synopsis "OCaml library providing a cryptographically secure pseudorandom number generator")

Keep lines at ~80 characters.  To keep the synopsis slighty shorter,
maybe

  "Cryptographically secure pseudo-random number generator in OCaml"

WDYT?