Re: ESS M-x R failing in a Windows installation

Hi Rodney,


HKEY_LOCAL_MACHINE\SOFTWARE\R-core\R\4.0.3\InstallPath and 
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\R-core\R\4.0.3\InstallPath both 
exist in my Windows 10 installation.

Best,
Steve


On 3/10/21 1:28 PM, Sparapani, Rodney via ESS-help wrote:
> Hi Gang:
>
> Just to follow-up on my own post.  I see that the Windows
> Registry was discussed here in June of 2012 and March of
> 2013 (not 2004 which was my initial guess).  But, whether
> that even exists in modern Windows, IDK!
>
> Here are the most relevant snippets…
>
> On 06/15/2012 12:06 PM, Rodney Sparapani wrote:
>> Hi Paul:
>>
>> Very nice thoughts. I'm just going to react to this part which seems
>> to be the most straightforward. I think you can call this from elisp.
>> But, the problem with this code is that it doesn't work, does it? Here's
>> what I get on Windows XP:
>>
>> H:\>reg query hklm\software\R-core\R /v InstallPath
>>
>> Error: The system was unable to find the specified registry key or value
>>
>> H:\>reg query hklm\software\wow6432Node\r-core\r /v InstallPath
>>
>> Error: The system was unable to find the specified registry key or value
>>
>> What do you see?
>>
>> Rodney
>>
> Oh, hang on.  For me, I need
>
> H:\>reg query hkcu\software\R-core\R /v InstallPath
> ! REG.EXE VERSION 3.0
>
> HKEY_CURRENT_USER\software\R-core\R
>       InstallPath REG_SZ C:\Documents and Settings\rsparapa.MCWCORP\My
> Documents\R\R-2.14.2
>
> Ok, I think I see what is going on.  You need to check each ROOTKEY
> [ HKLM | HKCU | HKCR | HKU | HKCC ]
>
> REG QUERY KeyName [/v ValueName | /ve] [/s]
>
>     KeyName    [\Machine\]FullKey
>       Machine - Name of remote machine,  omitting defaults to the current
> machine
>            Only HKLM and HKU are available on remote machines
>       FullKey  - in the form of ROOTKEY\SubKey name
>            ROOTKEY  [ HKLM | HKCU | HKCR | HKU | HKCC ]
>            SubKey  - The full name of a registry key under the selected
> ROOTKEY
>     /v  query for a specific registry key
>            ValueName  - The name, under the selected Key, to query
>            if omitted, all values under the Key are queried
>     /ve query for the default value or empty value name <no name>
>     /s  queries all subkeys and values
>
> So, that code is incomplete.  But, it could easily be adapted.
>
> Rodney
>
> On 03/28/2013 01:42 PM, Ross Boylan wrote:
>> BTW, the path is available in the registry at
>> HKEY_CURRENT_USER\Software\R-core\R\2.15.3 under InstallPath.  There is
>> also an entry that uses \R32\ instead of \R\ in the registry tree.
> Something like this has been suggested before (for example, see the
> discussion from June 15th).  There are a few problems here:
>
> 1) Generally, ESS developers are not cracker-jack Windows developers.
> 2) There have been MAJOR changes in Windows especially 7 and 8
> which may (or may not) be at issue here; for example, multi-user
> installs of ESS require omniscience.
> 3) it is not obvious to me why we need to search both the
> HKLM and HKCU root keys (and perhaps others as well?!?).
>
> So, I don't see this suggestion being acted on UNLESS there is
> a Windows developer lurking out there who wants to work on ESS.
> But, thanks anyways ;o)
> --
> Rodney Sparapani, Associate Professor of Biostatistics
> Chair ISBA Section on Biostatistics and Pharmaceutical Statistics
> Institute for Health and Equity, Division of Biostatistics
> Medical College of Wisconsin, Milwaukee Campus
>
>
> 	[[alternative HTML version deleted]]
>
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-- 
Steve Gutreuter

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