[Bug 1727819] Re: Depends: libdpkg-perl (= 1.18.4ubuntu1) but 1.18.4ubuntu1.2 is to be installed

[Adam Conrad]

This is because you installed from a point release, which uses xenial-
updates, and then you disabled xenial-updates in your sources.list.
That's not a supported or supportable configuration, and certainly not a
dpkg bug.

** Changed in: dpkg (Ubuntu)
       Status: New => Invalid

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Title:
  Depends: libdpkg-perl (= 1.18.4ubuntu1) but 1.18.4ubuntu1.2 is to be
  installed

Status in dpkg package in Ubuntu:
  Invalid

Bug description:
  I've tried installing "build-essential" package, but couldn't because
  package dpkg-dev depends on a certain version of libdpkg-perl which is
  superseeded by the most recent version in the repositories.

  After manually downgrading "libdpkg-perl" from 1.18.4ubuntu1.2 to
  1.18.4ubuntu1, "dpkg-dev" can be installed and everything is fine.

  This is a fresh install of Xubuntu 16.04.3 (64bit). No custom
  modifications of any kind. Just plain-vanilla installation from
  default repositories (no PPAs, etc).

  
  The encountered error message are as follows:

  The following packages have unmet dependencies:
  build-essential : Depends: dpkg-dev (>= 1.17.11) but it is not going to be installed

  The following packages have unmet dependencies:
  dpkg-dev : Depends: libdpkg-perl (= 1.18.4ubuntu1) but 1.18.4ubuntu1.2 is to be installed
  Recommends: build-essential but it is not going to be installed
  Recommends: libalgorithm-merge-perl but it is not going to be installed
  E: Unable to correct problems, you have held broken packages.

  
  Thought you might want to know...
  Seems to have happened in the past with previous version numbers already:
  https://askubuntu.com/questions/484750/why-build-essential-failed

  
  Thanks in advance.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: dpkg-dev 1.18.4ubuntu1
  ProcVersionSignature: Ubuntu 4.10.0-37.41~16.04.1-generic 4.10.17
  Uname: Linux 4.10.0-37-generic x86_64
  NonfreeKernelModules: btrfs xor raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs libcrc32c snd_hda_codec_hdmi binfmt_misc nls_iso8859_1 gpio_ich intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp snd_hda_codec_realtek snd_hda_codec_generic kvm_intel kvm snd_hda_intel irqbypass snd_hda_codec crct10dif_pclmul snd_hda_core crc32_pclmul snd_hwdep ghash_clmulni_intel snd_pcm pcbc snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq input_leds aesni_intel joydev snd_seq_device aes_x86_64 crypto_simd snd_timer glue_helper cryptd intel_cstate snd intel_rapl_perf soundcore serio_raw mei_me mei shpchp lpc_ich nuvoton_cir rc_core mac_hid parport_pc ppdev lp parport autofs4 uas usb_storage hid_generic usbhid hid nouveau mxm_wmi wmi video i2c_algo_bit ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops e1000e psmouse ahci drm libahci ptp pps_core fjes
  ApportVersion: 2.20.1-0ubuntu2.10
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Thu Oct 26 20:10:16 2017
  InstallationDate: Installed on 2017-10-26 (0 days ago)
  InstallationMedia: Xubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
  PackageArchitecture: all
  SourcePackage: dpkg
  UpgradeStatus: No upgrade log present (probably fresh install)

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