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I have installed basic TeX distribution (basictex-20150613.pkg) on my OS X 10.11.4. Now I want to install the lollipop package with TeX Live Utility. There is two options (I annotate them with red rectangles):

TeX Live Utility screenshot

Which version should be installed according to my OS?

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    The (pseudo)packages with the binaries should be automatically installed if you install the main lollipop package. Usually both versions of the binaries are installed; but in this case it makes no difference, because just two symbolic links are created. – egreg Apr 23 '16 at 20:51
  • @egreg Thanks. Would you please write this solution as a post? – Hamid Rohani Apr 24 '16 at 20:36
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The lollipop package corresponds to a format (just like latex or pdflatex), so it is linked to the “binary” packages for the various platforms; the ones relative to the host machine are automatically installed.

enter image description here

On Mac OS X usually both universal-darwin and x86_64-darwin are installed (you can disable one of them, but it's not so space saving. In the particular case of a format like lollipop the binary packages just create a symbolic link, so just a few bytes in the file system.

You can see it with a shell command:

> ls -l $(type -p lollipop)
lrwxr-xr-x  1 <user>  wheel  6 Jun 12  2015 /usr/texbin/lollipop@ -> pdftex

because this is how preloading the formats is implemented: the pdftex program knows the name it was called with and chooses the corresponding format.


A final comment: if you're not short of disk space, it's much better to install the full MacTeX (or TeX Live on other operating systems); life will be much easier, because manually installing packages with TeX Live Utility/tlmgr can be time consuming as there's no “dependency tree” available.

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