While building the package for `operations/software/tools-webservice` (https://gerrit.wikimedia.org/r/#/c/430647/) the debian glue job fails to find the package name:
```
I: user script /srv/pbuilder/build/cow.29670/tmp/hooks/B90lintian starting
+ apt-get -y install lintian
+ lintian --version
Lintian v2.5.22ubuntu1
+++ realpath /tmp/buildd/toollabs-webservice-0.39+0~20180504000124.1185+trusty~1.gbpce2144/debian/..
/tmp/hooks/B90lintian: line 21: realpath: command not found
++ basename ''
+ PACKAGE_NAME=
+ echo 'Found package name: '
Found package name:
+ lintian_out=/tmp/buildd/.lintian.txt
```
Eventually the Jenkins job fails to find a lintian.txt file and errors out:
```
[debian-glue] $ /bin/bash -xe /tmp/jenkins1156461214733163554.sh
+ suffix=.lintian.txt
+ for x in '*$suffix'
+ echo 'Converting lintian file *.lintian.txt'
Converting lintian file *.lintian.txt
+ cat '*.lintian.txt'
cat: *.lintian.txt: No such file or directory
Build step 'Execute shell' marked build as failure
```
`/usr/bin/realpath` is provided by `coreutils` and is not a build dependency of operations/software/tools-webservice.
See:
https://github.com/mika/jenkins-debian-glue/pull/193#pullrequestreview-117716778