There is indeed a bug in tcltk2, while I introduced some changes
targeting a better look of Tk widgets on Ubuntu. This new code is
assuming 'cat' is available on all platforms. Indeed on Windows, it *is*
available iff Rtools are installed, which is the case apparently on all
test machines so far, but the code fails otherwise.
I'll solve this bug this week-end (just testing if the platform is
Windows makes the job here) and submit a new version as soon as
possible. Sorry to all of you for the inconvenience it may have brought
to your workflow.
Waiting for this fix to propagated on all mirrors, if you urgently need
tcltk2, you know that you still can install Rtools as a temporary
work-around on one or the other test machine, which could be useful
anyway, if you are developing/compiling R packages...
Best,
Philippe
On 20/04/12 17:21, peter dalgaard wrote:
On Apr 20, 2012, at 16:03 , Duncan Murdoch wrote:
On 20/04/2012 8:41 AM, Roberto Ugoccioni wrote:
Hello,
I just installed R-2.15.0 on windows XP and cannot load package tcltk2
(which I just downloaded from CRAN as tcltk2_1.2-1.zip; package install
reported no problems):
library(tcltk2)
Carico il pacchetto richiesto: tcltk
Loading Tcl/Tk interface ... done
Error : .onLoad failed in loadNamespace() for 'tcltk2', details:
call: system("cat /etc/issue", intern = TRUE, ignore.stderr = TRUE)
error: 'cat' not found
Errore: package/namespace load failed for ‘tcltk2’
It seems .onLoad is trying to run a unix command 'cat' but i'm on a windows
platform:
str(.Platform)
List of 8
$ OS.type : chr "windows"
$ file.sep : chr "/"
$ dynlib.ext: chr ".dll"
$ GUI : chr "Rgui"
$ endian : chr "little"
$ pkgType : chr "win.binary"
$ path.sep : chr ";"
$ r_arch : chr "i386"
sessionInfo()
R version 2.15.0 (2012-03-30)
Platform: i386-pc-mingw32/i386 (32-bit)
locale:
[1] LC_COLLATE=Italian_Italy.1252 LC_CTYPE=Italian_Italy.1252
[3] LC_MONETARY=Italian_Italy.1252 LC_NUMERIC=C
[5] LC_TIME=Italian_Italy.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
I looked for an R file in the tcltk2 installed package tree containing the
above system() call but could not find it.
This looks like a bug to me but I'd like to ask for further advice before
reporting it as such, I might have overlooked something. Thanks for any
help.
I'd suggest you should contact the package maintainer. It's not hard to find a
copy of the cat utility function (e.g. in the Rtools used for building R and
packages), but the error does suggest the package may not be intended to be
used on Windows.
It's intended for Windows alright... However, the nit seems to be this:
tcltk2:::.isUbuntu
function ()
return(grepl("^Ubuntu", suppressWarnings(system("cat /etc/issue",
intern = TRUE, ignore.stderr = TRUE))[1]))
which gets called unconditionally in tcltk:::.onLoad(). It could at least check
that there is room to swing a cat....
Duncan Murdoch
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