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A brief note on how to install rattle/RGtk2 on macOS
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@jamesmnw for(i in 1:1000000){print("THANKS")} That hidden error in the cairo build of ignoring the -x11 flag caused me days of grief. Thanks for pointing that out. Your edit worked perfectly, allowing the rest of the instructions to work. I can now Rattle and RQDA and the world is a better place. :-)

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@milti, follow @jamesmnw's advice and make sure to brew reinstall --with-x11 cairo after editing the cairo formula.

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ScarlettU commented May 27, 2018

Thanks for your detailed advice. But it is still frustrating for me.
After typing "brew install --build-from-source --verbose gtk+" , I received "Error: gtk+ 2.24.32 did not build"
Please help me out. It's too hard for me.

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wabee commented May 29, 2018

The key to success for me was to use @jamesmnw advice and edit the configuration file for cairo using the formula supplied in his post and build. After that gtk+ build without errors. I could then just follow the instructions to install RGtk2 and cairodevice + rattle. To bad they messed up Homebrews version of cairo and caused all these problems

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hughng92 commented Jun 4, 2018

I need help. I am at step 8 with "brew edit gtk+"
When I am done editing the last two lines in df install, I do not know how to save or quit in the terminal.
I did run export EDITOR = vim.
I hope I provided info for troubleshooting.
Thanks a lot.

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aniket-cybrilla commented Jun 12, 2018

What is the solution to the below?

~/Downloads -> R CMD INSTALL RGtk2_2.20.34.tar.gz
During startup - Warning messages:
1: Setting LC_TIME failed, using "C"
2: Setting LC_MESSAGES failed, using "C"
3: Setting LC_MONETARY failed, using "C"
* installing to library ‘/usr/local/lib/R/3.5/site-library’
* installing *source* package ‘RGtk2’ ...
** package ‘RGtk2’ successfully unpacked and MD5 sums checked
checking for pkg-config... /usr/local/bin/pkg-config
checking pkg-config is at least version 0.9.0... yes
checking for INTROSPECTION... no
checking for GTK... no
configure: error: GTK version 2.8.0 required
ERROR: configuration failed for package ‘RGtk2’
* removing ‘/usr/local/lib/R/3.5/site-library/RGtk2’

As directed the version of GTK I manage to install is 2.24.32_2. But for RGtk2 it needs 2.8.0? Could you elaborate on the exact steps to perform to achieve this please?

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yihui commented Jun 14, 2018

As I just pointed out in a comment under @zhiyzuo's post (, the whole thing can be simplified to this:

system('brew install gtk+')

  if ([['sysname']] != 'Darwin') return()

  .Platform$pkgType = 'mac.binary.el-capitan'
  unlockBinding('.Platform', baseenv())
  assign('.Platform', .Platform, 'package:base')
  lockBinding('.Platform', baseenv())

    pkgType = 'both', install.packages.compile.from.source = 'always',
    repos = ''

install.packages(c('RGtk2', 'cairoDevice', 'rattle'))

No more struggling with editing the gtk+ formula :)

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thx,it work!

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I am getting this when doing "R CMD INSTALL RGtk2_2.20.33.tar.gz"

configure: error: GTK version 2.8.0 required

I am on MacOS Sierra 10.12.6, R version is 3.4.2
When I did "brew install --build-from-source --verbose gtk+" it installed GTK 2.24.31_1

I encountered same problem. Did you solve it?

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