python3 rpm macros not available without python3-devel installed

[David Malcolm]

I suspect I haven't had enough coffee yet, but I don't see the problem
here.  Why not simply add "python3-devel" as a build requirement as
Ignacio says?

If a build requirement isn't installed, it's acceptable for a build to
fail: it's a violation of a precondition.

On Wed, 2010-09-15 at 19:35 +0800, Robin Lee wrote:
> You should build this package in a clean root like a mock environment.
> If you have python3-devel already installed and then run rpmbuild
> --rebuild, you will not see the issue.
> 
> On Wed, Sep 15, 2010 at 7:25 PM, Robin Lee <robinlee.sysu at gmail.com>
> wrote:
>         For a more concrete example:
>         https://bugzilla.redhat.com/show_bug.cgi?id=567348
>         I want to set the python(abi) requirement of the subpackage at
>         buildtime. So, I want to set it like this:
>         Requires: python(abi) = %{py3_ver}
>         
>         But when build it, it will fail with the following output:
>         $ rpmbuild -bp dreampie.spec
>         Building target platforms: i686
>         Building for target i686
>         sh: python3: command not found
>         sh: python3: command not found
>         sh: python3: command not found
>         error: line 46: Version required: Requires:   python(abi) =
>         
>         Even though python3-devel has been added as BR.
>         
>         
>         
>         On Wed, Sep 15, 2010 at 7:06 PM, Ignacio Vazquez-Abrams
>         <ivazqueznet at gmail.com> wrote:
>                 
>                 On Wed, 2010-09-15 at 18:22 +0800, Robin Lee wrote:
>                 > python3 rpm macros not available without
>                 python3-devel installed.
>                 > 'rpmbuild --viewrc' will show you.
>                 >
>                 > So if you use the python3 macros to define another
>                 macro and you have
>                 > no python3-devel installed, you must fail.
>                 >
>                 > So, how to define, for example, a %py3_ver macro for
>                 the major version
>                 > of Python3? Must yum be used?
>                 >
>                 > Robin
>                 
>                 
>                 Adding a "BuildRequires: python3-devel" should be
>                 enough to pull them
>                 in.
>                 
>                 --
>                 Ignacio Vazquez-Abrams <ivazqueznet at gmail.com>