homebrew install High Sierra - tcl-tk support

On Oct 17, 2017, at 7:56 AM, David Winsemius <dwinsemius at comcast.net> wrote:

On Oct 17, 2017, at 1:43 AM, Rainer Krug <Rainer at krugs.de> wrote:

Hi

One question about home-brew installation:

After upgrading to High Sierra (and update to R 3.4.2), I don?t get tcl-tk support in R.

I get the following error:

	> library(tcltk)
	Error: package or namespace load failed for ?tcltk?:
	 .onLoad failed in loadNamespace() for 'tcltk', details:
	  call: fun(libname, pkgname)
	  error: Tcl/Tk support is not available on this system
	In addition: Warning message:
	S3 methods ?as.character.tclObj?, ?as.character.tclVar?, ?as.double.tclObj?, ?as.integer.tclObj?, ?as.logical.tclObj?, ?as.raw.tclObj?, ?print.tclObj?, ?[[.tclArray?, ?[[<-.tclArray?, ?$.tclArray?, ?$<-.tclArray?, ?names.tclArray?, ?names<-.tclArray?, ?length.tclArray?, ?length<-.tclArray?, ?tclObj.tclVar?, ?tclObj<-.tclVar?, ?tclvalue.default?, ?tclvalue.tclObj?, ?tclvalue.tclVar?, ?tclvalue<-.default?, ?tclvalue<-.tclVar?, ?close.tkProgressBar? were declared in NAMESPACE but not found

Is this a problem on my side, or is there a problem with R & homebrew & High Sierra & tcl-tk?
Caveat. I know almost nothing about homebrew other than its function and the fact that users of it often have problems with installing R properly. The CRAN page for the Mac R 3.4.2 fork says:

-------begin-------
Contains R 3.4.2 framework, R.app GUI 1.70 in 64-bit for Intel Macs, Tcl/Tk 8.6.6 X11 libraries and Texinfo 5.2. The latter two components are optional and can be ommitted when choosing "custom install", they are only needed if you want to use the tcltk R package or build package documentation from sources.
I intended that the next sentence be here (and wan't intending two copies of those sentences):

Note: the use of X11 (including tcltk) requires XQuartz to be installed since it is no longer part of OS X. Always re-install XQuartz when upgrading your OS X to a new major version.
-----end----

So it makes me wonder if you need to add the correct versions of the underlying system packages in a manner that your homebrew installation can find them. (the 3.3 fork uses a differnt version of Tcl/Tk.) 

-- 
David.

Thanks,

Rainer

--
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany)

University of Z?rich

Cell:       +41 (0)78 630 66 57
email:      Rainer at krugs.de
Skype:      RMkrug

PGP: 0x0F52F982

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David Winsemius
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'Any technology distinguishable from magic is insufficiently advanced.'   -Gehm's Corollary to Clarke's Third Law

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David Winsemius
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'Any technology distinguishable from magic is insufficiently advanced.'   -Gehm's Corollary to Clarke's Third Law

homebrew install High Sierra - tcl-tk support

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