bug#47964: webkitgtk-2.32.0 build fails

[Leo Famulari <leo@famulari.name>]

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On Fri, Apr 23, 2021 at 12:46:02AM -0400, Bone Baboon via Bug reports for GNU Guix wrote:
> builder for `/gnu/store/b1vs7n6dvmsrk9510q8hqjnq6m9mvrm3-webkitgtk-2.32.0.drv' failed with exit code 1

Our build farm (ci.guix.gnu.org) doesn't know about this derivation. I
logged in and tried to build it:

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$ guix build /gnu/store/b1vs7n6dvmsrk9510q8hqjnq6m9mvrm3-webkitgtk-2.32.0.drv
cannot build missing derivation ‘/gnu/store/b1vs7n6dvmsrk9510q8hqjnq6m9mvrm3-webkitgtk-2.32.0.drv’
guix build: error: build of `/gnu/store/b1vs7n6dvmsrk9510q8hqjnq6m9mvrm3-webkitgtk-2.32.0.drv' failed
------

> Generation 7    Apr 21 2021 15:56:57    (current)
>   guix ae5128e
>     repository URL: https://git.savannah.gnu.org/git/guix.git
>     branch: master
>     commit: ae5128e21eb7afa66bd7cfd7fd1bc5764d00663e

I tried to produce that derivation with the time machine:

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$ guix time-machine --commit=ae5128e21eb7afa66bd7cfd7fd1bc5764d00663e -- build webkitgtk --derivations
/gnu/store/z39pp5idq8ikhbf0a80li4ilb121kxfz-webkitgtk-2.32.0.drv
$ guix time-machine --commit=ae5128e21eb7afa66bd7cfd7fd1bc5764d00663e -- build webkitgtk --derivations --no-grafts
/gnu/store/0r5f5k5qckqzq21kfb1cd2m2niw6wsvy-webkitgtk-2.32.0.drv
------

We do have substitutes for those derivations.

This means that something is changing your "view" of Guix. You aren't
building the same things that the rest of us are building.

Are you using any channels? Or maybe custom packages via
GUIX_PACKAGE_PATH? Or anything else we should know about?

Can you send the file
'/gnu/store/b1vs7n6dvmsrk9510q8hqjnq6m9mvrm3-webkitgtk-2.32.0.drv'
as an attachment?

In the meantime I am testing the build with a single core.

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