[Bug 1980152] [NEW] Dependencies in focal permit a situation where dkms cannot compile

[Steve Dodd]

Public bug reported:

I'm not entirely convinced this is a bug in the dkms packaging, but I
wasn't sure where else to report it.

My system has ended up in a state where dkms cannot build modules -
specifically virtualbox-dkms - because /usr/bin/gcc doesn't exist.

dkms depends on gcc|c-compiler, and gcc-7 is installed, but 'gcc', which
provides /usr/bin/gcc, depends on gcc >= 9, so has obviously been
uninstalled at some point.

I almost certainly got here by manually removing packages with aptitude
or similar, but the fact remains that dpkg & aptitude think the state of
the system is consistent, yet virtualbox-dkms cannot configure because
it cannot build.

My suspicion is gcc-7 should not provide gcc or c-compiler if it does
not provide the /usr/bin/gcc link.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: dkms 2.8.1-5ubuntu2
ProcVersionSignature: Ubuntu 5.13.0-40.45~20.04.1-generic 5.13.19
Uname: Linux 5.13.0-40-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.24
Architecture: amd64
CasperMD5CheckResult: skip
Date: Tue Jun 28 21:28:26 2022
PackageArchitecture: all
ProcEnviron:
 TERM=screen.xterm-256color
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: dkms
UpgradeStatus: Upgraded to focal on 2021-01-14 (530 days ago)

** Affects: dkms (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: gcc-7 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug focal third-party-packages

** Also affects: gcc-7 (Ubuntu)
   Importance: Undecided
       Status: New

** Description changed:

  I'm not entirely convinced this is a bug in the dkms packaging, but I
  wasn't sure where else to report it.
  
  My system has ended up in a state where dkms cannot build modules -
  specifically virtualbox-dkms - because /usr/bin/gcc doesn't exist.
  
  dkms depends on gcc|c-compiler, and gcc-7 is installed, but 'gcc', which
  provides /usr/bin/gcc, depends on gcc >= 9, so has obviously been
  uninstalled at some point.
  
  I almost certainly got here by manually removing packages with aptitude
  or similar, but the fact remains that dpkg & aptitude think the state of
- the system is consistent, yet virtual-dkms cannot configure because it
- cannot build.
+ the system is consistent, yet virtualbox-dkms cannot configure because
+ it cannot build.
  
  My suspicion is gcc-7 should not provide gcc or c-compiler if it does
  not provide the /usr/bin/gcc link.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: dkms 2.8.1-5ubuntu2
  ProcVersionSignature: Ubuntu 5.13.0-40.45~20.04.1-generic 5.13.19
  Uname: Linux 5.13.0-40-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.24
  Architecture: amd64
  CasperMD5CheckResult: skip
  Date: Tue Jun 28 21:28:26 2022
  PackageArchitecture: all
  ProcEnviron:
-  TERM=screen.xterm-256color
-  PATH=(custom, no user)
-  LANG=en_GB.UTF-8
-  SHELL=/bin/bash
+  TERM=screen.xterm-256color
+  PATH=(custom, no user)
+  LANG=en_GB.UTF-8
+  SHELL=/bin/bash
  SourcePackage: dkms
  UpgradeStatus: Upgraded to focal on 2021-01-14 (530 days ago)

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https://bugs.launchpad.net/bugs/1980152

Title:
  Dependencies in focal permit a situation where dkms cannot compile

Status in dkms package in Ubuntu:
  New
Status in gcc-7 package in Ubuntu:
  New

Bug description:
  I'm not entirely convinced this is a bug in the dkms packaging, but I
  wasn't sure where else to report it.

  My system has ended up in a state where dkms cannot build modules -
  specifically virtualbox-dkms - because /usr/bin/gcc doesn't exist.

  dkms depends on gcc|c-compiler, and gcc-7 is installed, but 'gcc',
  which provides /usr/bin/gcc, depends on gcc >= 9, so has obviously
  been uninstalled at some point.

  I almost certainly got here by manually removing packages with
  aptitude or similar, but the fact remains that dpkg & aptitude think
  the state of the system is consistent, yet virtualbox-dkms cannot
  configure because it cannot build.

  My suspicion is gcc-7 should not provide gcc or c-compiler if it does
  not provide the /usr/bin/gcc link.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: dkms 2.8.1-5ubuntu2
  ProcVersionSignature: Ubuntu 5.13.0-40.45~20.04.1-generic 5.13.19
  Uname: Linux 5.13.0-40-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.24
  Architecture: amd64
  CasperMD5CheckResult: skip
  Date: Tue Jun 28 21:28:26 2022
  PackageArchitecture: all
  ProcEnviron:
   TERM=screen.xterm-256color
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: dkms
  UpgradeStatus: Upgraded to focal on 2021-01-14 (530 days ago)

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