[debhelper-devel] Bug#885580: debhelper: dh add-ons are order sensitive

[殷啟聰 | Kai-Chung Yan]

I encountered a similar situation, hope this help with the issue.

I was developing a addon called "maven-repo-helper-extras" who depends on "maven-repo-helper" [1]. The dh sequences in my addon need to be inserted after the sequences introduced by "maven-repo-helper", so I was seeking a way to establish addon relationship inside a Perl script. Niels Thykier finally pointed me to this solution:

```perl
use Debian::Debhelper::Sequence::maven_repo_helper;

insert_after("mh_install", "mh_shlibdeps");
insert_after("mh_shlibdeps, mh_genlaunchers");
```

Thus I can use "dh $@ --with maven_repo_helper_extras" in "debian/rules" without applying "maven-repo-helper" as well. Interestingly, it also works even if I apply both addon to dh in no matter what order. Seems "debhelper" already handles duplicated sequence insertion pretty well.

[1]: https://tracker.debian.org/pkg/maven-repo-helper

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