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sdz
n00b
Joined: 26 Sep 2011
Posts: 33
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 Posted: Sun Mar 26, 2017 7:38 pm Post subject: Query Installed Packages on Archived Installation |
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I recently reinstalled Gentoo on a new HDD (same computer otherwise).
I have the old hard drive mounted in a USB 3.0 enclosure to /mnt/old/.
How can I query that partition to get the list of all installed packages (including versions and USE flags)? |
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eccerr0r
Watchman
Joined: 01 Jul 2004
Posts: 9678
Location: almost Mile High in the USA
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| Posted: Sun Mar 26, 2017 8:04 pm Post subject: |
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If that disk is complete and secure, you can chroot to it and run
After getting the list you can
| Code: | | # equery uses packagename |
to get its USE flags, if you didn't have a good record in its /etc{/portage}/make.conf or /etc/portage/* ...
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fedeliallalinea
Administrator
Joined: 08 Mar 2003
Posts: 30904
Location: here
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| Posted: Mon Mar 27, 2017 5:43 am Post subject: |
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Also command qlist -vI work
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freke
l33t
Joined: 23 Jan 2003
Posts: 977
Location: Somewhere in Denmark
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| Posted: Mon Mar 27, 2017 1:13 pm Post subject: |
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| Code: | | cd /mnt/old/var/db/pkg/ && ls -d */* |
[edit]no use-flags here though[/edit] |
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cboldt
Veteran
Joined: 24 Aug 2005
Posts: 1046
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| Posted: Mon Mar 27, 2017 2:00 pm Post subject: |
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| Code: | cd /mnt/old/var/db/pkg
for i in $(ls -d */*)
do
printf "%-30s %s\n" $i "$(cat $i/USE)"
done |
There are some entries in the USE file that are repetitive and could be filtered out, but you get the idea here.
Only a fraction of "all installed packages" belongs in the "world" file, and the list of USEflags doesn't differentiate between default USEflags, and those that need to be set. |
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khayyam
Watchman
Joined: 07 Jun 2012
Posts: 6227
Location: Room 101
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| Posted: Mon Mar 27, 2017 2:04 pm Post subject: |
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sdz ...
not done this but I expect you can set the root env var (for most query tools, including emerge) ...
| Code: | | % emerge --root=/mnt/old --pretend --verbose --quiet --emptytree --deep @world |
That said, providing both the package list and useflags isn't something gentoolkit, portage-utils, eix, etc, do, so it might be easier to script using /var/db/pkg ...
| Code: | | % pushd /mnt/old/var/db/pkg ; for p in */* ; do echo "$p" $(cat "${p}/USE") ; done ; popd |
As per fedeliallalinea suggestion, you could add the '--root' env (though this is just a package list, not package and useflags) ...
| Code: | | % qlist --root /mnt/old -Iv |
HTH & best ... khay |
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