[SRU] package quickml 0.7-5.1 failed to install/upgrade: installed quickml package post-installation script subprocess returned error exit status 1

[ Impact ]

quickml is completely unusable as it will even fail to install when attempted.

The errors seen are:

Setting up quickml (0.8-1) ...
Job for quickml.service failed because the control process exited with error code.
See "systemctl status quickml.service" and "journalctl -xeu quickml.service" for details.
invoke-rc.d: initscript quickml, action "start" failed.
× quickml.service
     Loaded: loaded (/etc/init.d/quickml; generated)
     Active: failed (Result: exit-code) since Mon 2024-04-29 20:37:00 BST; 7ms ago
       Docs: man:systemd-sysv-generator(8)
    Process: 2929 ExecStart=/etc/init.d/quickml start (code=exited, status=1/FAILURE)
        CPU: 87ms

Apr 29 20:37:00 noble quickml[2935]: from /usr/lib/ruby/vendor_ruby/quickml/server.rb:16:in `<top (required)>'
Apr 29 20:37:00 noble quickml[2935]: from <internal:/usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb>:86:in `require'
Apr 29 20:37:00 noble quickml[2935]: from <internal:/usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb>:86:in `require'
Apr 29 20:37:00 noble quickml[2935]: from /usr/lib/ruby/vendor_ruby/quickml.rb:7:in `<top (required)>'
Apr 29 20:37:00 noble quickml[2935]: from <internal:/usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb>:86:in `require'
Apr 29 20:37:00 noble quickml[2935]: from <internal:/usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb>:86:in `require'
Apr 29 20:37:00 noble quickml[2935]: from /usr/sbin/quickml:15:in `<main>'
Apr 29 20:37:00 noble systemd[1]: quickml.service: Control process exited, code=exited, status=1/FAILURE
Apr 29 20:37:00 noble systemd[1]: quickml.service: Failed with result 'exit-code'.
Apr 29 20:37:00 noble systemd[1]: Failed to start quickml.service.
dpkg: error processing package quickml (--configure):
 installed quickml package post-installation script subprocess returned error exit status 1
Errors were encountered while processing:
 quickml
E: Sub-process /usr/bin/dpkg returned an error code (1)

[ Test Plan ]

1. install quickml.
2. check if installed successfully
3. As a quick verification check:
systemctl status quickml.service

[ Where problems could occur ]

There is no change in code and it only fixes a runtime dependency and places an empty config file which quickml tries to read at startup. So, there is very minimum chance of any regression.

[ Other Info ]

This will fix the quickml installation and the service will start. But for a proper functioning of quickml, the user will need to add the smtp_host (which should be same as domain) in the /etc/mailname.

[ Original Bug Description ]

While installing.

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: quickml 0.7-5.1
ProcVersionSignature: Ubuntu 5.8.0-48.54~20.04.1-generic 5.8.18
Uname: Linux 5.8.0-48-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.16
Architecture: amd64
CasperMD5CheckResult: skip
Date: Tue Mar 30 08:57:21 2021
ErrorMessage: installed quickml package post-installation script subprocess returned error exit status 1
InstallationDate: Installed on 2021-03-29 (0 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
PackageArchitecture: all
Python3Details: /usr/bin/python3.8, Python 3.8.5, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.19.7ubuntu3
 apt 2.0.4
SourcePackage: quickml
Title: package quickml 0.7-5.1 failed to install/upgrade: installed quickml package post-installation script subprocess returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)