Hi Gábor,

On Fri, 24 Jan 2020, SZEDER Gábor wrote:

> On Thu, Jan 23, 2020 at 10:39:12PM +0100, Johannes Schindelin wrote:
> > > diff --git a/ci/lib.sh b/ci/lib.sh
> > > index a90d0dc0fd..c3a8cd2104 100755
> > > --- a/ci/lib.sh
> > > +++ b/ci/lib.sh
> > > @@ -162,6 +162,9 @@ linux-clang|linux-gcc)
> > >  	if [ "$jobname" = linux-gcc ]
> > >  	then
> > >  		export CC=gcc-8
> > > +		MAKEFLAGS="$MAKEFLAGS PYTHON_PATH=$(which python3)"
> > > +	else
> > > +		MAKEFLAGS="$MAKEFLAGS PYTHON_PATH=$(which python2)"
> > >  	fi
> > >
> > >  	export GIT_TEST_HTTPD=true
> > > @@ -182,6 +185,9 @@ osx-clang|osx-gcc)
> > >  	if [ "$jobname" = osx-gcc ]
> > >  	then
> > >  		export CC=gcc-9
> > > +		MAKEFLAGS="$MAKEFLAGS PYTHON_PATH=$(which python3)"
> > > +	else
> > > +		MAKEFLAGS="$MAKEFLAGS PYTHON_PATH=$(which python2)"
> > >  	fi
> > >
> > >  	# t9810 occasionally fails on Travis CI OS X
> >
> > My only worry is that this makes it even more obscure what purpose which
> > job has. Nothing in the name `osx-gcc` shouts loudly "I want to use Python
> > 3.x!" to me.
>
> Do they have to shout that loudly in the name?
>
> We could rename these jobs to e.g. 'linux-clang-py2' and the like, but
> I think it would bring little benefit, if any.  In our Travis CI
> builds these Linux/OSX Clang/GCC jobs come from the build matrix,
> therefore the jobname is not visible on the Travis CI web interface or
> API, only in the build logs.  There are some pages on Azure Pipelines
> that do show the jobname (and some that could, but hide it instead),
> but it's just too convoluted (or sometimes even impossible, well, for
> me anyway) to get there.
>
> And if the requested Python binary can't be found, which will
> eventually happen with 'python2', then the non-zero exit code of
> 'which' will abort the build, no matter how the job is called.

I am mostly worried about contributors whose PRs break for "magic"
reasons. If it is not clear where the difference between `linux-gcc` and
`linux-clang` lies, that can cause unintended frustration, and I do not
want to cause that.

Ciao,
Dscho