Bug 151822 – >=sys-apps/portage-2.1.2_pre3-r2 fails with a very long list of ebuilds

• Status: RESOLVED FIXED
• Product: Portage Development

[Description Roberto Castagnola 2006-10-18 04:42:05 UTC]

I usually run this command:
# cat list | xargs emerge -pvef
where list contains a very long list of ebuilds.

Using version 2.1.2_pre3-r1 it worked, while using higher versions I get this error:

Traceback (most recent call last):
  File "/usr/bin/emerge", line 4382, in ?
    retval = emerge_main()
  File "/usr/bin/emerge", line 4377, in emerge_main
    myopts, myaction, myfiles, spinner)
  File "/usr/bin/emerge", line 3765, in action_build
    retval, favorites = mydepgraph.select_files(myfiles)
  File "/usr/bin/emerge", line 1039, in select_files
    self.validate_blockers()
  File "/usr/bin/emerge", line 1362, in validate_blockers
    new_pkgs.append(
IndexError: list index out of range

(line numbers are related to version 2.1.2_pre3-r4).

I can get latest versions worling only with a shorter list of ebuilds.

[Comment 1 Zac Medico 2006-10-18 05:07:57 UTC]

I'm not sure what triggers that particular case.  Could you post --debug output for a command that triggers it?  Do you really feed it the paths of ebuilds, or just the package atoms?

[Comment 2 Zac Medico 2006-10-18 05:24:37 UTC]

Created attachment 99937 [details, diff]
handle unresolvable blockers properly

This should fix it.  If you save the patch as /tmp/unresolvable.patch, then it can be applied as follows:

cd /usr/lib/portage
patch -p0 < /tmp/unresolvable.patch

[Comment 3 Roberto Castagnola 2006-10-18 06:37:18 UTC]

(In reply to comment #2)

This patch fix the problem.
Checking for differences between 2.1.2_pre3-r4 patched and 2.1.2_pre3-r1 I found out the problem was with dev-lang/php when media-libs/libswf is installed:
Considering 2.1.2_pre3-r4 without your patch, runnig
# emerge -pv dev-lang/php
I get the message
[blocks B     ] media-libs/libswf (is blocking dev-lang/php-5.1.6-r6)
while running
# emerge -pev dev-lang/php
I get the reported error.

[Comment 4 Roberto Castagnola 2006-10-18 07:03:46 UTC]

Appling the patch and running
# emerge -pev dev-lang/php
I still get the message
[blocks B     ] media-libs/libswf (is blocking dev-lang/php-5.1.6-r6)

Using '--emptytree' option shouldn't emerge ignore installed packages? 

[Comment 5 Zac Medico 2006-10-18 13:00:07 UTC]

(In reply to comment #4)
> Using '--emptytree' option shouldn't emerge ignore installed packages? 

Actually, one of the primary uses of --emptytree is to reinstall all of the installed packages (except for those that --depclean would remove).  We might make a version that ignores installed packages for bug #127956, but it would still be incorrect to have two mutually blocking packages installed simultaneously.

[Comment 6 Zac Medico 2006-10-18 14:27:34 UTC]

This has been released in 2.1.2_pre3-r5.