ocaml-opium-unikernel

Example unikernel using opium + httpaf (using https://github.com/dinosaure/paf-le-chien)

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2Distinct people

2Mentions

0Explicit recommenders

11GitHub stars

REPOSITORY AT A GLANCE

What to know before exploring

What it is

Example unikernel using opium + httpaf (using https://github.com/dinosaure/paf-le-chien)

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

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Also in these discussions

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This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 5:04:57 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by hour2 dated mentions

Observed mentions: 2021-01-25 13:06:21 UTC to 2021-01-26 09:27:25 UTC.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges

UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
Period	Start (UTC)	End (exclusive, UTC)	Mentions	Comments
Jan 25, 13:00	2021-01-25 13:00:00 UTC	2021-01-25 14:00:00 UTC	1	1
Jan 25, 14:00	2021-01-25 14:00:00 UTC	2021-01-25 15:00:00 UTC	0	0
Jan 25, 15:00	2021-01-25 15:00:00 UTC	2021-01-25 16:00:00 UTC	0	0
Jan 25, 16:00	2021-01-25 16:00:00 UTC	2021-01-25 17:00:00 UTC	0	0
Jan 25, 17:00	2021-01-25 17:00:00 UTC	2021-01-25 18:00:00 UTC	0	0
Jan 25, 18:00	2021-01-25 18:00:00 UTC	2021-01-25 19:00:00 UTC	0	0
Jan 25, 19:00	2021-01-25 19:00:00 UTC	2021-01-25 20:00:00 UTC	0	0
Jan 25, 20:00	2021-01-25 20:00:00 UTC	2021-01-25 21:00:00 UTC	0	0
Jan 25, 21:00	2021-01-25 21:00:00 UTC	2021-01-25 22:00:00 UTC	0	0
Jan 25, 22:00	2021-01-25 22:00:00 UTC	2021-01-25 23:00:00 UTC	0	0
Jan 25, 23:00	2021-01-25 23:00:00 UTC	2021-01-26 00:00:00 UTC	0	0
Jan 26, 00:00	2021-01-26 00:00:00 UTC	2021-01-26 01:00:00 UTC	0	0
Jan 26, 01:00	2021-01-26 01:00:00 UTC	2021-01-26 02:00:00 UTC	0	0
Jan 26, 02:00	2021-01-26 02:00:00 UTC	2021-01-26 03:00:00 UTC	0	0
Jan 26, 03:00	2021-01-26 03:00:00 UTC	2021-01-26 04:00:00 UTC	0	0
Jan 26, 04:00	2021-01-26 04:00:00 UTC	2021-01-26 05:00:00 UTC	0	0
Jan 26, 05:00	2021-01-26 05:00:00 UTC	2021-01-26 06:00:00 UTC	0	0
Jan 26, 06:00	2021-01-26 06:00:00 UTC	2021-01-26 07:00:00 UTC	0	0
Jan 26, 07:00	2021-01-26 07:00:00 UTC	2021-01-26 08:00:00 UTC	0	0
Jan 26, 08:00	2021-01-26 08:00:00 UTC	2021-01-26 09:00:00 UTC	0	0
Jan 26, 09:00	2021-01-26 09:00:00 UTC	2021-01-26 10:00:00 UTC	1	1

What Hacker News says

2 sources

cies·Jan 26, 2021

Yesterday I was made aware of this example of using a simple (Sinatra/Flask/Express-like) web framework on top of Mirage: https://github.com/anuragsoni/ocaml-opium-unikernel/blob/mas... If not mistaken one should be able to use ReasonML[1] as a language frontend with this as well, thereby bringing down the entry barrier. https://reasonml.github.io/docs/en/what-and-why

In The road ahead for MirageOS in 2021

anuragsoni·Jan 25, 2021

Lwt [1] based web frameworks can be used on MirageOS if they provide an interface that allows someone to swap out the unix dependent pieces. One such framework is Opium [2], that provides most of its features in a unix independent code library `opium_kernel`. Its fairly straightforward to run an opium app on mirage. This example needs to be updated to the newest apis in the released version of Opium but this can provide some hints about how to run an opium app on mirage: https://github.com/anuragsoni/ocaml-opium-unikernel. If a lower level web toolkit is sufficient then ocaml's cohttp [3] library has been available on mirage for quite some time now. [1] https://github.com/ocsigen/lwt/ [2] https://github.com/rgrinberg/opium [3] https://github.com/mirage/ocaml-cohttp/

In The RustyHermit Unikernel