Re: [gentoo-dev] Proposal to undeprecate EGO_SUM

[William Hubbs]

On Sat, Oct 01, 2022 at 07:21:13PM +0200, Florian Schmaus wrote:
> On 01/10/2022 18.36, Ulrich Mueller wrote:
> >>>>>> On Sat, 01 Oct 2022, Florian Schmaus wrote:
> >
> >> Bug #719201 was triggered by dev-texlive/texlive-latexextra-2000. It
> >> appears that the ebuild had more than 6000 entries in SRC_URI [1],
> >
> > That includes double counting and must be divided by the number of
> > developers in TEXLIVE_DEVS. AFAICS that number was two in 2020. So 3000
> > is more realistic as a number there.
>
> That may be very well the case. I'd appreciate if you would elaborate on
> the double counting. If someone knows a good and easy way to compute A
> for an ebuild, then please let me know. That would help to get more
> meaningful data.
>
>
> >> from which A is generated from. Hence even a EGO_SUM limit of 3000
> >> entries should provide enough safety margin to avoid any Golang ebuild
> >> running into this.
> >
> > See above, with 3000 entries there may be zero safety margin. It also
> > depends on total filename length, because the limit is the Linux
> > kernel's MAX_ARG_STRLEN (which is 128 KiB).
>
> Of course, this is a rough estimation assuming that the filename length
> is roughly the same on average. That said, my proposed limit for EGO_SUM
> is 1500, which is still half of 3000 and should still provide enough
> safety margin.

Since EGO_SUM_SRC_URI is the variable that gets added to SRC_URI, I
would rather put the limitation there instead of EGO_SUM if we do end up
keeping this.

William