Bug#1149823: scotch: FTBFS: 81% tests passed, 33 tests failed out of 171

[Santiago Vila]

On Fri, Oct 09, 2026 at 07:30:35PM +0200, Santiago Vila wrote:
> Hi. I confirm that doing the change in debian/rules makes dh_auto_test
> to succeed (I'm testing inside a chroot).

Hmm, no, that's not true, but I finally found the reason why it did
not work, and it's quite funny:

The comment after the variable value makes the variable to be defined
with trailing spaces, which is confusing for mpiexec.

The following minimal Makefile shows the effect:

----------------------------------------------------
export PRTE_MCA_mapby=:oversubscribe  # some comment

all:
	mpiexec -n 2 echo hello
----------------------------------------------------

And this is what happens:

$ make
mpiexec -n 2 echo hello
--------------------------------------------------------------------------
The mapping request contains an unrecognized qualifier:

  Request: :oversubscribe  

Please check your request and try again. Remember, multiple
qualifiers must be separated by a colon (':').
--------------------------------------------------------------------------
make: *** [Makefile:4: all] Error 29


I've just made a team upload to fix that.

Thanks.