On May 9, 2014, at 19:42, Jerry wrote:
> Thanks, Ryan. Light testing of Octave indicates that it is currently working.
> However, at least some of the dependencies indicated in the list above
> ("Error: The following dependencies were not installed:...") are in fact not
> installed--but some are. For some reason Octave needs texlive and it is not
> installed. Some parts of texlive e.g. texlive-bin are installed but others
> are not. Obviously I can install texlive separately but I'm wondering if
> something went wrong.
>
> Do you think something went wrong, i.e, will I find some of these
> dependencies missing later? Do you think your recipe above (install Octave
> without +docs, then with +docs) will fix any problems?
You've got the port installed with the +docs variant as you wanted, so no
further action is needed on your part; my message was mainly for the archives
for anyone else encountering the problem later.
Probably, a bin:-style dependency is declared incorrectly in some port. It
might be doxygen.
doxygen is an indirect dependency of octave +docs, and doxygen itself also has
a +docs variant. When you request a variant, that variant request gets passed
on to all the dependencies that have not yet been installed. So MacPorts tried
to install doxygen with the +docs variant as well.
doxygen's +docs variant has an incorrect bin:-style dependency on
"bin:pdflatex:texlive"; I filed https://trac.macports.org/ticket/43669 for that.
The dependency "bin:pdflatex:texlive" means: if there is not a binary
"pdflatex" in the path, install the port "texlive". The implication is that the
port "texlive" will provide the binary "pdflatex", but that's not the case;
"pdflatex" is actually provided by texlive-latex. texlive depends on
texlive-latex, but it also depends on a lot of other ports that don't relate to
latex.
So in your case, MacPorts saw the "bin:pdflatex:texlive" dependency of the
doxygen port's +docs variant, saw that the binary "pdflatex" didn't exist, and
began installing texlive's dependencies, most of which weren't actually needed,
and one of which introduces a circular dependency back to doxygen which makes
MacPorts unable to proceed.
If you were to install texlive-latex, either manually or as a dependency of
something else, and then try again to install octave +docs, it would work,
because now the dependency "bin:pdflatex:texlive" is satisfied by the existence
of the pdflatex binary that the texlive-latex port installed. Alternately,
first installing doxygen without the +docs variant would work too.
pdfjam has a similar dependency error; I filed
https://trac.macports.org/ticket/43668 for that.
latex-mk had a similar problem; it is openmaintainer so I fixed it in
https://trac.macports.org/changeset/119933 .
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