On May 10, 2014, at 5:41 PM, Ryan Schmidt <[email protected]> wrote:
> 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 .
>
Thanks for the clear and detailed explanation.
Jerry
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