Hi Alan,

Alan Mackenzie <acm@muc.de> writes:

> Hello, Gentoo.
>
> I'm trying to do
>
>     # emerge -a @preserved-rebuild
>
> ..  For this purpose, I created a temporary repository, filling it with
> ancient ebuilds recovered from /var/db/pkg.
>
> It shows me 5 packages to be merged, among them being
>
>     [ebuild   R    ] dev-lang/spidermonkey-78.15.0 [78.15.0]
>
> ..  When I answer the "are you sure?" prompt with Yes, spidermonkey fails
> to build with this error message:
>
>>>> Emerging (1 of 5) dev-lang/spidermonkey-78.15.0::localrepo
> !!! Fetched file: firefox-78.15.0esr.source.tar.xz VERIFY FAILED!
> !!! Reason: Insufficient data for checksum verification
> !!! Got:
> !!! Expected: BLAKE2B BLAKE2S MD5 RMD160 SHA1 SHA256 SHA3_256 SHA3_512
> SHA512 WHIRLPOOL
>  * Fetch failed for 'dev-lang/spidermonkey-78.15.0', Log file:
>  *  '/var/tmp/portage/dev-lang/spidermonkey-78.15.0/temp/build.log'
>
> It would appear that the sources are no longer available at Firefox, and
> I no longer have a copy in /usr/portage/distfiles.
>
> Why is portage trying to build this obsolete version?  I surely will just
> unmerge it as soon as my system is back in order.

Because it currently is installed and depends on a preserved lib.

> Most importantly, how can I free up my system so that I can proceed with
> the pending profile update?  I appear to be stuck.  I hope I won't have
> to reinstall gentoo.

You can just go ahead with it.  Odds are Spidermonkey will be updated,
or at least rebuilt, when you do that.
-- 
Arsen Arsenović