[Bug 830492] Re: Downloads should not lock apt

[Launchpad Bug Tracker]

** Branch linked: lp:~james.r.haigh/aptdaemon/aptdaemon-aria2

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https://bugs.launchpad.net/bugs/830492

Title:
  Downloads should not lock apt

Status in APT:
  Won't Fix
Status in Aptboost:
  Incomplete
Status in Aptdaemon:
  In Progress
Status in The synaptic package manager:
  Won't Fix
Status in “apt” package in Ubuntu:
  Won't Fix
Status in “synaptic” package in Ubuntu:
  Won't Fix

Bug description:
  It should be possible to download while installing, or download 2
  things at once.

  Currently an apt-get command with '--download-only' will lock apt
  (/var/lib/dpkg/lock). Synaptic even locks apt just by being open!

  Examples:
  * I might be updating my system. The update is still in the download stage, and I want to download and install a small package for something. Currently I would have to stop the download, install the package, and resume the download.
  * I'm installing lots of application from the Software Centre. While 1 app is installing the next should be downloading.
  * Run apt-get from command line while browsing software in Synaptic.

  To avoid multiple instances of apt downloading the same file, each
  partial file should have it's own lock (For example,
  /var/cache/apt/archives/partial/inkscape_0.48.1-2ubuntu2_i386.deb
  would have inkscape_0.48.1-2ubuntu2_i386.lock). It may also be
  necessary to prevent updating package lists (sudo apt-get update) when
  any download lock exists as well as apt's main lock.

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