"activate.scm.drv" Empty and Live

Aloha Guix,

A number of errors have appeared on my system. Notably I have the following

issue with "sudo guix system reconfigure $CONFIG_FILE":

"guix system: error: error parsing derivation

`/gnu/store/8jqz1m1src0h4md70q09rlxppdy6d1jx-activate-service.scm.drv':

expected string `Derive(['"

I believe this is due to key files on my system (e.g.

"/gnu/store/...-activate.scm.drv" and

"/gnu/store/...-activate-service.scm.drv") have become both empty and live

on my system.

Here is the result of trying to repair using "guix gc"

"zjabbar@tao ~$ sudo guix gc --verify=contents,repair

reading the store...

checking path existence...

checking hashes...

path `/gnu/store/035mddyijs1xrp7z36fn1yvqd6asx4vq-provenance-builder' was

modified! expected h

ash `468eebad16e7842b982f046d0e846c5bc2672af01879cc43409f9534820eb815', got

`77ac62e2629d8e45f

624589c0c8bf99e24b3a722349bf1e79bc186008534e246'

substitute: updating substitutes from 'https://ci.guix.gnu.org'... 100.0%

substitute: updating substitutes from 'https://bordeaux.guix.gnu.org'...

100.0%

error: cannot repair path

`/gnu/store/035mddyijs1xrp7z36fn1yvqd6asx4vq-provenance-builder'

path `/gnu/store/0c9hqf02jksb06r3ywdz0alq1154kkq9-grub.cfg-builder' was

modified! expected hash

`04ed96b94726f1ffc7ce3fae556d5c057de1e0348da488a31694190787783b6a', got

`77ac62e2629d8e45f624589c0c8bf99e24b3a722349bf1e79bc186008534e246'

substitute: updating substitutes from 'https://ci.guix.gnu.org'... 100.0%

substitute: updating substitutes from 'https://bordeaux.guix.gnu.org'...

100.0%

error: cannot repair path

`/gnu/store/0c9hqf02jksb06r3ywdz0alq1154kkq9-grub.cfg-builder'

path

`/gnu/store/17q0ymk80965sm1vww4anwz96q57q229-shepherd-user-homes.scm.drv'

was modified! expected hash

`c69bf28c4c631368cbe1ad4d5d3dcc424f5a0d4a658cb964e796b2b92a6306fd', got

`77ac62e2629d8e45f624589c0c8bf99e24b3a722349bf1e79bc186008534e246'

substitute: updating substitutes from 'https://ci.guix.gnu.org'... 100.0%

substitute: updating substitutes from 'https://bordeaux.guix.gnu.org'...

100.0%

error: cannot repair path

`/gnu/store/17q0ymk80965sm1vww4anwz96q57q229-shepherd-user-homes.scm.drv'

path

`/gnu/store/1byrjg1w8mqmgla4257xc25lyh042bq2-xdg-desktop-database-builder'

was modified! expected hash

`77ed327cc6131e0a0cc6e207e679b09edc826a26a2bc4bf5c7f0f6e3f7bc6517', got

`77ac62e2629d8e45f624589c0c8bf99e24b3a722349bf1e79bc186008534e246'

substitute: updating substitutes from 'https://ci.guix.gnu.org'... 100.0%

substitute: updating substitutes from 'https://bordeaux.guix.gnu.org'...

100.0%

error: cannot repair path

`/gnu/store/1byrjg1w8mqmgla4257xc25lyh042bq2-xdg-desktop-database-builder'

path `/gnu/store/1mcdi0zvcmb184dg6459cpxg4hr1pz4h-glib-schemas.drv' was

modified! expected hash

`b9504e60e0576992ee0cb323ec15a71a0b6aeedcb47f22be5a16040063da0757', got

`77ac62e2629d8e45f624589c0c8bf99e24b3a722349bf1e79bc186008534e246'

substitute: updating substitutes from 'https://ci.guix.gnu.org'... 100.0%

substitute: updating substitutes from 'https://bordeaux.guix.gnu.org'...

100.0%

error: cannot repair path

`/gnu/store/1mcdi0zvcmb184dg6459cpxg4hr1pz4h-glib-schemas.drv'

path `/gnu/store/1wdm4khqlrx2yxb646jp9s7ia3f9p9w9-configuration.scm' was

modified! expected hash

`851294df3f63927f9da53b318e7cec9dedf0d7e149a57be38707ae3c2a819e80', got

`77ac62e2629d8e45f624589c0c8bf99e24b3a722349bf1e79bc186008534e246'

substitute: updating substitutes from 'https://ci.guix.gnu.org'... 100.0%

substitute: updating substitutes from 'https://bordeaux.guix.gnu.org'...

100.0%

error: cannot repair path

`/gnu/store/1wdm4khqlrx2yxb646jp9s7ia3f9p9w9-configuration.scm'"

It looks like a lot of files have the same hash and are empty. Is the only

way to fix this to reinstall Guix? Is it known why this could happen in the

first place?

--

Thank you,

Zain Jabbar

Zain Jabbar schreef op vr 15-04-2022 om 15:20 [-1000]:

I guess a power outage or the like. Currently the guix daemon never

calls 'sync' or the like (except possibly for the SQlite db), though

maybe it should (at cost of some performance).

That's a way to do it, but there are less heavy-handed ways. E.g.,

maybe "guix gc --verify=repair" could be extended to delete objects

that are broken (wrong hash) and aren't referenced? (long-term)

For the short term, maybe do "guix gc", possibly some of the broken

files are unused.

Greetings,

Maxime.

Zain Jabbar schreef op za 16-04-2022 om 04:18 [-1000]:

Nice, closing.

FWIW, you can close reports yourself by sending to

NNNNN-done@debbugs.gnu.org instead of NNNNN@debbugs.gnu.org.

Greetings,

Maxime.

Aloha Maxime Devos,

Your suggestion worked! I did the following but I'm not sure how much was

actually needed:

1. Use guix pull and guix system to switch to an older generation (I did

like -100)

2. Use guix gc

3. Run guix system again which remakes the files (like activate.scm as per

title)

This time guix system actually runs to completion. Mahalo nui i? ?oe!

On Sat, Apr 16, 2022, 3:53 AM Maxime Devos <maximedevos@telenet.be> wrote: