[Bug 1702319] Re: package apport 2.20.1-0ubuntu2.5 failed to install/upgrade: subprocess installed pre-removal script returned error exit status 127

[Benjamin Drung]

Thank you for taking the time to report this bug and helping to make
Ubuntu better.

The relevant apport.prerm code for Ubuntu 16.04:

```
# Automatically added by dh_python2:
if which pyclean >/dev/null 2>&1; then
	pyclean -p apport 
else
	dpkg -L apport | grep \.py$ | while read file
	do
		rm -f "${file}"[co] >/dev/null
  	done
fi
```

pyclean should not be called if it is not found. Do you still experience
this issue or can reproduce it?

** Changed in: apport (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/1702319

Title:
  package apport 2.20.1-0ubuntu2.5 failed to install/upgrade: subprocess
  installed pre-removal script returned error exit status 127

Status in apport package in Ubuntu:
  Incomplete

Bug description:
  I tried so many alternatives i didn't found relevant bug to fix it.

  ProblemType: Package
  DistroRelease: Ubuntu 16.04
  Package: apport 2.20.1-0ubuntu2.5
  ProcVersionSignature: Ubuntu 4.8.0-54.57~16.04.1-generic 4.8.17
  Uname: Linux 4.8.0-54-generic x86_64
  ApportLog:
   
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  CrashReports: 600:0:116:180223:2017-07-04 20:24:38.287366390 +0530:2017-07-04 20:24:39.287366390 +0530:/var/crash/apport.0.crash
  Date: Tue Jul  4 20:24:38 2017
  DpkgTerminalLog:
   Preparing to unpack .../apport_2.20.1-0ubuntu2.4_all.deb ...
   /var/lib/dpkg/info/apport.prerm: 19: /var/lib/dpkg/info/apport.prerm: pyclean: not found
   dpkg: error processing archive /var/cache/apt/archives/apport_2.20.1-0ubuntu2.4_all.deb (--unpack):
    subprocess installed pre-removal script returned error exit status 127
  DuplicateSignature:
   package:apport:2.20.1-0ubuntu2.5
   Preparing to unpack .../apport_2.20.1-0ubuntu2.4_all.deb ...
   /var/lib/dpkg/info/apport.prerm: 19: /var/lib/dpkg/info/apport.prerm: pyclean: not found
   dpkg: error processing archive /var/cache/apt/archives/apport_2.20.1-0ubuntu2.4_all.deb (--unpack):
    subprocess installed pre-removal script returned error exit status 127
  ErrorMessage: subprocess installed pre-removal script returned error exit status 127
  InstallationDate: Installed on 2017-03-30 (95 days ago)
  InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2)
  PackageArchitecture: all
  RelatedPackageVersions:
   dpkg 1.18.4ubuntu1.2
   apt  1.2.20
  SourcePackage: apport
  Title: package apport 2.20.1-0ubuntu2.5 failed to install/upgrade: subprocess installed pre-removal script returned error exit status 127
  UpgradeStatus: No upgrade log present (probably fresh install)

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