[R-pkg-devel] problem with regdmp finding v4.2.x under Windows

[Kevin Ushey]

Hi Jonathan,

I'm not certain if this is the issue you're encountering, but I've
noticed that different versions of R may write to different locations
in the registry.

Right now, on my machine, I see entries for R 4.1.3 installed at:

    Computer\HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\R-core\R

And for my installation of R 4.2.1, I see it at:

    Computer\HKEY_LOCAL_MACHINE\SOFTWARE\R-core\R

Note that the registry location for R 4.2.1 is no longer part of the
WOW6432Node.

I'm not sure if this is a hiccup unique to my own local machine, but
perhaps you're seeing something similar? A way to verify would be to
check and compare what you see with:

    reg query HKEY_LOCAL_MACHINE\SOFTWARE\R-core\R /reg:32
    reg query HKEY_LOCAL_MACHINE\SOFTWARE\R-core\R /reg:64

In my case, I see:

C:\Users\kevin>reg query HKEY_LOCAL_MACHINE\SOFTWARE\R-core\R /reg:32

HKEY_LOCAL_MACHINE\SOFTWARE\R-core\R
    InstallPath    REG_SZ    C:\R\R-4.1.3
    Current Version    REG_SZ    4.1.3

C:\Users\kevin>reg query HKEY_LOCAL_MACHINE\SOFTWARE\R-core\R /reg:64

HKEY_LOCAL_MACHINE\SOFTWARE\R-core\R
    InstallPath    REG_SZ    C:\R\R-4.2.1
    Current Version    REG_SZ    4.2.1

Best,
Kevin

On Tue, Jul 5, 2022 at 8:00 AM Uwe Ligges
<ligges using statistik.tu-dortmund.de> wrote:
>
> The installer asks you
>
> "Save Version in Registry" with Description "Save the R version and
> install path in the Registry". If this is checked in the installation
> wizard, it should work, otherwise not.
>
> Best,
> Uwe Ligges
>
>
> On 05.07.2022 10:15, Ivan Krylov wrote:
> > Hi Jonathan,
> >
> > Since we don't have a separate "R on Windows" or "R installation
> > and administration" mailing list, I think that this question is a
> > better fit for R-help, not R-package-devel. Although R-devel could be
> > an option too (if we determine that the R installer is doing something
> > wrong), the last time R installer has been significantly changed is
> > 2020, so the problem is likely elsewhere.
> >
> > On Tue, 5 Jul 2022 01:59:43 +0000
> > Jonathan Godfrey <A.J.Godfrey using massey.ac.nz> wrote:
> >
> >> To do all of that efficiently, I make extensive use of batch files
> >> (Windows user alert) and a key ingredient of those batch files is
> >> that I avoid having to edit the R version number with each
> >> installation.
> >
> > Can you show us the relevant parts of the batch files?
> >
> >> On my older desktop which has multiple R installations, I do not get
> >> an "Access denied" error, quarto finds the path to the 4.2.0
> >> installation via brute force, but regdmp via my batch files gives me
> >> 4.1.x instead.
> >
> > What is the output of the following commands on the machines where you
> > have troubles finding R-4.2.x?
> >
> > reg query "HKEY_LOCAL_MACHINE\Software\R-core"
> > reg query "HKEY_CURRENT_USER\Software\R-core"
> >
> >>      [[alternative HTML version deleted]]
> >
> > This mailing list removes the HTML parts from our messages, so we only
> > see the automatically-generated plain text part. In this case, I think
> > that your message wasn't damaged at all, but sometimes (especially when
> > pasting code or output examples) the results can be undesirable.
> >
>
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