Re: [Rd] Specifying dependency on a specific patched version

[Uwe Ligges]

Gabor Grothendieck wrote:
Is there a way to specify a package dependency in the Depends:
field of the DESCRIPTION file for a specific patched version of a 
specific OS?

For example, today's Windows patched release (2005-05-14) has
the capability of changing the time zone within R on Windows
via Sys.putenv(TZ=GMT) but prior patched versions do not have this.
Is there some way of ensuring that the 2005-05-14 or later release is used
if on Windows only?

No.
Uwe Ligges
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Re: [Rd] Specifying dependency on a specific patched version

[Dirk Eddelbuettel]

On 15 May 2005 at 12:37, Uwe Ligges wrote:
| Gabor Grothendieck wrote:
|  For example, today's Windows patched release (2005-05-14) has
|  the capability of changing the time zone within R on Windows
|  via Sys.putenv(TZ=GMT) but prior patched versions do not have this.
|  Is there some way of ensuring that the 2005-05-14 or later release is used
|  if on Windows only?
| 
| 
| No.

Indirectly, though, as you can check in .First.lib.  

But as Uwe notes, the versioned Depends (as we call that in Debian) does
not exist for CRAN packages or R itself. 

Dirk

-- 
An economist is an expert who will know tomorrow why the things he 
predicted yesterday didn't happen today.  --  Laurence J. Peter

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