Conflict on very first port (xorg) on rpi3

[Chris]

On Fri, 15 May 2020 11:05:54 -0700 bob prohaska fbsd at www.zefox.net said

> On Fri, May 15, 2020 at 01:49:21PM -0300, Danilo G. Baio wrote:
> > On Fri, May 15, 2020 at 08:19:22AM -0700, bob prohaska wrote:
> > > On Fri, May 15, 2020 at 12:33:10AM -0700, Mark Millard via freebsd-ports
> > wrote:
> > > > 
> > > > Some building and isntalling had to occur prior to the
> > > > textproc/py-sphinx18 build attempt, possibly from
> > > > prior session(s) of building and installing.
> > > > 
> > > > 
> > > 
> > > In this case x11/xorg was the first port attempted in a new
> > > ports tree. The only "prior sessions" would have been within
> > > the dependencies of x11/xorg. Is that resolvable by poudriere?
> > > 
> > > > textproc/py-sphinx18 is new as of 2020-May-11.
> > > > The devel/llvm[16789]0 ports require textproc/py-sphinx18 .
> > > > Only about 26 ports require textproc/py-sphinx18 but
> > > > I'll not list the others.
> > > > 
> > > > textproc/py-sphinx has been around longer and has
> > > > 142 ports that require it. I'll not list them.
> > > > 
> > > > 
> > > > textproc/py-sphinx18/Makefile lists:
> > > > 
> > > > CONFLICTS_INSTALL=      py*-sphinx
> > > > 
> > > > textproc/py-sphinx/Makefile lists:
> > > > 
> > > > CONFLICTS_INSTALL=      py*-sphinx18
> > > > 
> > > > 
> > > > So, for example, indirectly the devel/llvm[16789]0
> > > > ports conflict with at least 142 other ports because
> > > > of the textproc/py-sphinx* difference in requirements.
> > > > 
> > > > 
> > > > The conflict is real and limits what combinations
> > > > of ports you may have installed at the same time.
> > > 
> > > I'll try deinstalling the conflicting port and hope
> > > it won't be required later....
> > 
> > It seems that just devel/llvm80 is pulling sphinx18 when building
> > x11/xorg.
> > 
> > Try disabling DOCS option on devel/llvm80 for now.
> > 
> > I've opened a PR to track this issue:
> > https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=246487
> > 
> 
> Wish I'd known it was only the DOCS option! Too late now,
> sphinx18 is deinstalled and llvm80 is building.
> 
> This is probably a dumb question, but is there some way
> to learn at the outset what conflicts need to be worked
> around? Something like a "make conflicts" target? Seemingly 
> it could be done by hand, but that promises to be tedious.
I think
run-depends-list, build-depends-list, or all-depends-list
should give you what you seek. :-)

--Chris
> 
> At best 8-)
> 
> Thanks for writing!
> 
> bob prohaska
> 
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