Re: List all packages which have a build requirement on package foo

[Todd Zullinger]

Stefan Schulze Frielinghaus wrote:
>  On Mon, Aug 19, 2019 at 12:47:20PM -0400, Todd Zullinger wrote:
> > If you enable the '-source' repositories, you'll be able to
> > do this with `dnf repoquery`.  Something like this, I
> > believe:
> > 
> >     dnf repoquery --disablerepo '*' --enablerepo '*-source' --alldeps
> --whatrequires foo
> > 
> > (You may want to be more selective in which source repos you
> > enable, of course.)
>  
>  I wasn't aware of this. Thanks for letting me know. It seems like the
>  recursive option is not working like for "normal" queries, e.g.,
>  
>      dnf repoquery --alldeps --recursive --whatrequires ghc-compiler
>  
>  lists 600 packages while without the recursive option 586. However,
>  
>      dnf repoquery --disablerepo '*' --enablerepo '*-source' --alldeps
> --recursive --whatrequires ghc-compiler
>  
>  lists only 5 packages. I would have expected that at least some packages
>  like "happy" or "alex" have a build requirement on the GHC compiler.
>  Maybe not directly but at least through other dependencies.
>  
>  Do I miss something here? 
I don't know why the --recursive option doesn't work for the
command on source repos (but I haven't really looked to see
if that is intentional either).  Perhaps using that requires
that you don't disable the non-source repos?

I think many of the haskell apps have a BuildRequires on
ghc-rpm-macros, which has a Requires on ghc-compiler.

It might be handy to add the --tree option to see a little
better how the deps relate.  That output is large, but piped
to a pager or saved in a file, it can be useful.

-- 
Todd