This commit adjusts the upgrade-services system test to not build anything
when computing the derivation for the system test. I came across this when
looking at issues computing the system test derivations to store in the Guix
Data Service.
* gnu/tests/reconfigure.scm (run-upgrade-services-test): Remove the use of,
and definition for ensure-service-file.
* gnu/tests/reconfigure.scm (run-switch-to-system-test): Assert that
'/run/current-system' points to the activated system, and that new user
accounts specified in the operating system declaration are created.
[[PGP Signed Part:No public key for F506FD169D8FD95A created at 2019-07-24T18:35:10+0200 using RSA]]
* gnu/tests/reconfigure.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add it.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>