Environment checks prior to regression tests?

How about an idea that allows to launch environment checker (typically shell scripts) prior
to regression tests?

The following stuffs should be preconfigured to run sepgsql's regression test.
- SELinux must be run and configured to enforcing mode.
- The sepgsql-regtest policy module must be loaded.
- The boolean of sepgsql_regression_test_mode must be turned on.
- The psql command should be labeled as 'bin_t'

If checkinstall optionally allows to launch an environment checker on regression test,
we may be possible to suggest users to fix up their configuration. It seems to me quite
helpful.

For example, one idea is to inject a dummy variable (mostly, initialized to empty) as
dependency of installcheck, being available to overwrite in Makefile of contrib, as follows:

# against installed postmaster
installcheck: submake $(REGRESS_PRE)
$(pg_regress_installcheck) $(REGRESS_OPTS) $(REGRESS)

Thanks,
--
NEC Europe Ltd, SAP Global Competence Center
KaiGai Kohei <kohei(dot)kaigai(at)emea(dot)nec(dot)com>