Mirroring support - Githubissues

ocaml / opam

opam is a source-based package manager. It supports multiple simultaneous compiler installations, flexible package constraints, and a Git-friendly development workflow.

https://opam.ocaml.org

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Mirroring support #4103

Open XVilka opened 4 years ago

XVilka commented 4 years ago

Currently it is impossible to make a local or regional mirror for both opam repository and source files in a batch, like some of the Linux distributions or package managers. It would be amazing and useful to setup a couple mirrors on a various regional CDNs, like some other languages/distributions did, And add the instruction on how to add them into the global mirror lists:

See example pages on how to setup the mirror:

See the example of a big mirror from Tencent with various languages, distributions and frameworks: https://mirrors.tencent.com/

I asked this on Discourse but got no easy solution

rjbou commented 4 years ago

The steps are dispersed in the discourse thread. To summarize:

Set up the mirror
- copy of opam-repository (git clone)
- opam admin cache if you want to cache archives
- opam admin index for http
- have a webserver
- for opam.ocaml.org, scripts are in this repo
Use the mirror
- opam repo add mirror <url>, to have it as a fallback, or with --rank 1
- with --set-default to have it as the default one for switch creation

It can be the occasion to have a blog post for that.

XVilka commented 4 years ago

Yes, I would be awesome to have a good step-by-step guide, especially since it will be the IT team who setups this kind of mirror, not seasoned OCaml users/developers.

dbuenzli commented 4 years ago

It can be the occasion to have a blog post for that.

Blog posts are poor substitutes for manuals -- for one thing they are difficult to update. It's better to have that in the manual.

XVilka commented 4 years ago

Let me know if I can help somehow. Also I checked the scripts from opam.ocaml.org and found some issues: