[Bug 1867315] [NEW] templates.dat is regenerated even without changes

[Alkis Georgopoulos]

Public bug reported:

Running for example `pam-auth-update` results in /var/cache/debconf/templates.{dat,dat-old} getting regenerated with no diff.
In focal live CD this file is 17 MB, so that wastes 34 MB of cow/tmpfs/RAM.
This also affects ltsp.org which too uses a live session.
And of course it makes debconf slower than it can be.

This was reported back in 2006 in LP #43706, but a workaround was
employed then, instead of pinpointing the underlying debconf issue.

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

** Description changed:

  Running for example `pam-auth-update` results in /var/cache/debconf/templates.{dat,dat-old} getting regenerated with no diff.
- In focal live CD this file is 17 MB, so that wastes 34 MB of cow/tmpfs.
+ In focal live CD this file is 17 MB, so that wastes 34 MB of cow/tmpfs/RAM.
  This also affects ltsp.org which too uses a live session.
  And of course it makes debconf slower than it can be.
  
  This was reported back in 2006 in LP #43706, but a workaround was
  employed then, instead of pinpointing the underlying debconf issue.

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https://bugs.launchpad.net/bugs/1867315

Title:
  templates.dat is regenerated even without changes

Status in debconf package in Ubuntu:
  New

Bug description:
  Running for example `pam-auth-update` results in /var/cache/debconf/templates.{dat,dat-old} getting regenerated with no diff.
  In focal live CD this file is 17 MB, so that wastes 34 MB of cow/tmpfs/RAM.
  This also affects ltsp.org which too uses a live session.
  And of course it makes debconf slower than it can be.

  This was reported back in 2006 in LP #43706, but a workaround was
  employed then, instead of pinpointing the underlying debconf issue.

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