It is required for the testsuite, for convenience include it into the toolchain
and the metamodules

Build for gcc 11.3 fails (bug in gcc docs).

Dots are not allowed in spack environment names. Replace "." -> "_"

With the vfs option enabled we observed random segmentation faults such
as the one described in
https://gitlab.gwdg.de/mpsd-cs/tickets/-/issues/38
Disabling the option seems to fix the problem.

Signed-off-by: Cristian Le <cristian.le@mpsd.mpg.de>

Signed-off-by: Cristian Le <cristian.le@mpsd.mpg.de>

closes #106

The default setting (reuse: dependencies) is causing issues with the intel
toolchains. I suggest we re-add the option for all toolchains. (We had it in
before and I removed it when working on the foss because it seemed superfluous.)

Removed from the toolchain:
- cmake
- perl-yaml

These modules have to be loaded separately for now

From Franco-Bonafe

From Franco Bonafe