This change allows detecting configuration errors during
switch-to-configuration instead of them being reported asynchronously
*after* switch-to-configuration has exited.
(And update the NixOS test accordingly.)
Due to recent changes (likely a sqlite3 update) the sqlite3 meta-command
did suddenly succeed while sqlite3 is still unable to read the still
encrypted database. It just prints the following output and doesn't
seem to try to open/read the DB (which would fail):
```
main: /home/alice/.config/Signal/sql/db.sqlite r/w
```
We can simply fix this "regression" by instructing sqlite3 to list the tables
in the database (which fails because it cannot read the encrypted DB):
```
machine: must fail: su - alice -c 'sqlite3 ~/.config/Signal/sql/db.sqlite .tables'
machine # [ 47.036720] su[1178]: Successful su for alice by root
machine # [ 47.041049] su[1178]: pam_unix(su:session): session opened for user alice(uid=1000) by (uid=0)
machine # Error: file is not a database
machine # [ 47.116070] su[1178]: pam_unix(su:session): session closed for user alice
(finished: must fail: su - alice -c 'sqlite3 ~/.config/Signal/sql/db.sqlite .tables', in 0.12 seconds)
```
Fix #181463.
The ConditionFileNotEmpty override patch wasn't correct for stage1, which
does have the modules in /lib. So, remove the patch and set
the right path with overrides in the final system.
Also, make sure systemd-tmpfiles-setup-dev is pulled in to create
all the necessary symlinks.
We want Openldap clients to load /etc/ldap.conf at runtime, not
${pkgs.openldap}/etc/ldap.conf which is always a sample config.
Pass sysconfdir=/etc at compile time, so that /etc/krb5.conf is embedded
in the library as the path of its config file.
Pass sysconfdir=${out}/etc at install time, so that the sample configs
and schema files are correctly included in the build output.
This hack works because the Makefiles are not smart enough to notice
that the sysconfdir variable has changed across invocations -- because
nobody ever writes their Makefiles to be that smart. :-)
Fixes #181937.
