Re: [MirageOS-devel] supported OCaml versions

[Mindy Preston <mindy@xxxxxxxxxxxxxxxxxxx>]

On 11/17/17 07:14, Hannes Mehnert wrote:

> Dear people,
>
> the current state:
> - MirageOS3 was advertised as "working with OCaml 4.03 upwards"
> - mirage-xen works as of now only with 4.04.2
> - OCaml 4.06 was released with a major breaking change (safe-string)
>
>  From some discussion on IRC, the following seems to be consensus (please
> discuss if you've other opinions):
> - Mirage supports 4.04.2 upwards (this is true for the mirage tool
> itself as well as libraries only used with mirage, other libraries used
> elsewhere as well (such as ipaddr, uri, cstruct, tls, etc.) may want to
> support more OCaml versions
> - travis CI in the repositories should test 4.04.2 and 4.06 (to avoid
> having a huge blowup of options)
Do we lose anything by not testing 4.05.0?

> - NB: if a repository doesn't rely on external C code, there's no real
> need to test it with all the linux distributions available.
>
> 4.03 may still work, but we're not putting much effort into maintaining
> compatibility --> we can safely bump to 'available: [ ocaml-version >=
> "4.04.2" ]' in opam.
For mirage itself and libraries used only in mirage, sure.  My 
experience trying to support a range of ocaml-version stanzas in that 
ball of repositories was pretty bad last time and I think it's best to 
keep them bounded to the same compiler.
-Mindy

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