[Bug 493154] Re: missing file /usr/lib/libapt-pkg-libc6.10-6.so.4.8.1 (from apt package)

[Prateek Karandikar]

Why is this bug closed? Unless the user intentionally does something
evil, "apt is installed" is an invariant Ubuntu should maintain. Isn't
it a bug that it ever got into an apt-is-not-installed state?

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Title:
  missing file /usr/lib/libapt-pkg-libc6.10-6.so.4.8.1 (from apt
  package)

Status in “apt” package in Ubuntu:
  Invalid

Bug description:
  Binary package hint: apt

  After today's updates (Lucid) I encountered a lot of issues, missing
  libs. Apt is one of them:

  sudo aptitude update
  aptitude: error while loading shared libraries: libapt-pkg-libc6.10-6.so.4.8: cannot open shared object file: No such file or directory

  sudo aptitude safe-upgrade
  aptitude: error while loading shared libraries: libapt-pkg-libc6.10-6.so.4.8: cannot open shared object file: No such file or directory

  ldd $(which aptitude)
          linux-gate.so.1 =>  (0xb775c000)
          libapt-pkg-libc6.10-6.so.4.8 => not found
          libncursesw.so.5 => /lib/libncursesw.so.5 (0xb76fd000)
          libsigc-2.0.so.0 => /usr/lib/libsigc-2.0.so.0 (0xb76f5000)
          libcwidget.so.3 => /usr/lib/libcwidget.so.3 (0xb7637000)
          libept.so.0 => /usr/lib/libept.so.0 (0xb75c6000)
          libxapian.so.15 => /usr/lib/libxapian.so.15 (0xb747d000)
          libz.so.1 => /lib/libz.so.1 (0xb7468000)
          libpthread.so.0 => /lib/tls/i686/cmov/libpthread.so.0 (0xb744f000)
          libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0xb735b000)
          libm.so.6 => /lib/tls/i686/cmov/libm.so.6 (0xb7335000)
          libgcc_s.so.1 => /lib/libgcc_s.so.1 (0xb7317000)
          libc.so.6 => /lib/tls/i686/cmov/libc.so.6 (0xb71d3000)
          libdl.so.2 => /lib/tls/i686/cmov/libdl.so.2 (0xb71cf000)
          /lib/ld-linux.so.2 (0xb775d000)
          libapt-pkg-libc6.10-6.so.4.8 => not found

  apt-cache policy apt
  apt-cache: error while loading shared libraries: libapt-pkg-libc6.10-6.so.4.8: cannot open shared object file: No such file or directory

  I've installed debsums from Debian unstable after a tip from yofel on
  #ubuntu+1:

  debsums apt | grep -v OK
  debsums: missing file /usr/lib/libapt-pkg-libc6.10-6.so.4.8.1 (from apt package)

  dpkg still works, so I should be able to resolve this matter with a
  new apt package.

  /usr/lib$ lt | grep apt
  -rw-r--r--  1 root root   427880 2009-08-24 14:52 libraptor.so.1.2.0
  -rw-r--r--  1 root root    71548 2009-10-15 21:25 libapt-inst-libc6.10-6.so.1.1.0
  lrwxrwxrwx  1 root root       30 2009-10-29 22:51 libapt-pkg-libc6.10-6.so.4.8 -> libapt-pkg-libc6.10-6.so.4.8.1
  drwxr-xr-x  3 root root     4096 2009-10-29 22:51 apt
  lrwxrwxrwx  1 root root       31 2009-10-29 22:51 libapt-inst-libc6.10-6.so.1.1 -> libapt-inst-libc6.10-6.so.1.1.0
  lrwxrwxrwx  1 root root       18 2009-10-29 23:07 libraptor.so.1 -> libraptor.so.1.2.0

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