Ok I found the place that was causing the segfault on installation, made a patch, it worked for me, and I pushed a new release.
(Fixes also sent upstream) dnssec-trigger should also now only look for configuration files in /etc/dnssec-trigger, and it shouldn't try to create ones in /etc any more. This may cause problems with the location for your customized configuration file, but that probably should be a new bug. Please let me know if dnssec-trigger-0.17+repack-2 works for you. Diane
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