run.dlang.io - a modern way to run D code

[Jonathan M Davis]

On Wednesday, December 13, 2017 08:33:36 rikki cattermole via Digitalmars-d-
announce wrote:
> On 13/12/2017 8:11 AM, Jonathan M Davis wrote:
> > On Wednesday, December 13, 2017 08:04:19 rikki cattermole via
> > Digitalmars-d->
> > announce wrote:
> >> On 13/12/2017 7:56 AM, Jonathan M Davis wrote:
> >>> On Wednesday, December 13, 2017 06:53:02 rikki cattermole via
> >>> Digitalmars-d->
> >>>
> >>> announce wrote:
> >>>> On 13/12/2017 6:46 AM, bauss wrote:
> >>>>> On Wednesday, 13 December 2017 at 01:14:26 UTC, Seb wrote:
> >>>>>> On Wednesday, 13 December 2017 at 00:32:11 UTC, rikki cattermole
> >
> > wrote:
> >>>>>>> On 12/12/2017 6:37 PM, Seb wrote:
> >>>>>>>> === Supported D Compilers ===
> >>>>>>>>
> >>>>>>>> * Latest DMD nightly
> >>>>>>>> * Latest DMD beta
> >>>>>>>> * Latest DMD
> >>>>>>>> * Latest LDC beta
> >>>>>>>> * Latest LDC
> >>>>>>>>
> >>>>>>>> The Docker images are rebuilt every day automatically.
> >>>>>>>
> >>>>>>> Can we please select a version we want to test against?
> >>>>>>
> >>>>>> While it would be rather easier to build more Docker images [1] and
> >>>>>> add them to the tour [2], I fear that this will be too much
> >>>>>> maintenance overhead and will lead to outdated compiler soon.
> >>>>>> Also the storage on the machine is limited and we can't drop an
> >>>>>> unlimited amount of Docker images there.
> >>>>>>
> >>>>>> [1] https://github.com/dlang-tour/core-exec
> >>>>>> [2]
> >>>>>> https://github.com/dlang-tour/core/blob/master/source/exec/docker.d
> >>>>>> #L
> >>>>>> 22
> >>>>>
> >>>>> What you could do is support the 3 latest versions of the compilers.
> >>>>>
> >>>>> Ex. for DMD you would support:
> >>>>> 2.077.1
> >>>>> 2.076.1
> >>>>> 2.075.1
> >>>>
> >>>> Also the older c++ version (2.06x.x).
> >>>
> >>> What would be the point of that? That's old enough that no one should
> >>> really be using it. Targetting it just runs the risk of your code not
> >>> working with a recent version of the compiler and standard library.
> >>>
> >>> - Jonathan M Davis
> >>
> >> One word, dmd.
> >
> > What about it?
> >
> > - Jonathan M Davis
>
> It is required to be compiled by (I think) 2.068.2 for bootstrapping
> purposes.
>
> So at the very least there is one code base in very active use by the D
> community using such an old version. Can't ignore it.

I don't see how that really has anything to do with a website that's used to
test snippets of code, and the reality of the matter is that there's pretty
much no way that dmd is going to continue to be compatible with that version
of the language forever - especially with all of the stuff that Walter has
been doing with scope. At some point, backwards compatibility will be
sufficiently broken that dmd won't be able to compile with both 2.068.2 and
the most recent version, meaning that bootstrapping will have to be done in
more steps, or it will have to be done via cross-compiling. Regardless, it's
not like anyone is going to be using run.dlang.io for building dmd.

- Jonathan M Davis