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On Thu, Jul 26, 2012 at 2:40 PM, Michael Mol <mikemol@×××××.com> wrote: |
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> (Really, this observation is more about simply making the information |
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> available; distcc could consume that information if someone chose to |
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> do the work to add that functionality.) |
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|
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Well, I'm not sure how to get the info out of the internals of portage |
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itself (I have to imagine it would be fast since portage has to know |
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about it already), but for a list of packages you can xargs them into |
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qlist to get a list of all files, and then pipe that into a script |
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that will populate a chroot for you. |
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|
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Quick script for those curious to try it out: |
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|
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mkdir newroot |
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mount -t tmpfs none newroot |
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cd newroot |
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unshare -m /bin/bash |
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echo "list of packages" | xargs qlist | linkfile |
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(poke around) |
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exit |
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(note that bind mounts are gone) |
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cd .. |
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umount newroot ; rmdir newroot |
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(note that all traces gone) |
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|
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Contents of linkfile script: |
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#!/bin/bash |
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install -D /dev/null "./$1" |
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mount -n --bind "$1" "./$1" |
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(That -n is important if you don't want to muck up your /etc/mtab ) |
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BTW, unshare is a fun command to play around with if you've never used |
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namespaces. You can do things like replace commands by bind-mounting |
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right over them. |
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|
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Rich |
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