Well, on the positive side, it seems to be a fairly limited bug. :)
You have to actually have a syntax error in your DESCRIPTION file, and
it needs to be in one of the fields passed to parse_description_field()
as defined in tools:::.install_packages(); which is only Biarch,
LazyData, ByteCompile, and KeepSource.
Cheers,
Aaron
On 11/24/2017 09:18 PM, Martin Maechler wrote:
>>>>>> Aaron Wells <aar...@catalyst.net.nz>
>>>>>> on Fri, 24 Nov 2017 12:46:48 +1300 writes:
>
> > Hi, I think I've found a bug in R CMD INSTALL. When it tries to parse a
> > DESCRIPTION file with an invalid LazyData field, it errors out while
> > trying to print the correct error message:
>
> >> R CMD INSTALL .
> > * installing to library
> ‘/home/example/R/x86_64-pc-linux-gnu-library/3.4’
> > * installing *source* package ‘samplepackage’ ...
> > ** data
> > Error in errmsg("invalid value of ", field, " field in DESCRIPTION") :
> > could not find function "errmsg"
> > * removing
> ‘/home/example/R/x86_64-pc-linux-gnu-library/3.4/samplepackage’
>
>
> > It should instead be using that errmsg() function to print the more
> > helpful error message: "invalid value of LazyData field in DESCRIPTION".
>
> > I've traced it down to this line of code in tools:::.install_packages()
> >
> https://github.com/wch/r-source/blob/trunk/src/library/tools/R/install.R#L977
> > . The errmsg() function actually is defined earlier on in the function,
> > but there seems to be a scoping issue that makes it not available here.
>
> > I've uploaded a sample project to reproduce the bug here:
> > https://github.com/agwells/R-CMD-INSTALL-bug
>
> > I'm running R version 3.4.2 (2017-09-28), on Ubuntu 16.04.
>
> > Cheers,
> > Aaron
>
> Thank you very much, Aaron.
> This is indeed a bug, and it looks that I had caused it when
> introducing the internal str_parse() utlity.
>
> It's too bad this is so close before release of R 3.4.3 and the
> fix to the bug is not trivial (not very hard either) such that
> it most probably will not make it into 3.4.3.
>
> Martin Maechler
> ETH Zurich
>
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