GNU bug report logs -
#63288
30.0.50; Emacs 30 packages fail to build with native comp on some machines
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Reported by: Brian Leung <leungbk <at> posteo.net>
Date: Fri, 5 May 2023 04:00:02 UTC
Severity: normal
Found in version 30.0.50
Done: Pip Cet <pipcet <at> protonmail.com>
Bug is archived. No further changes may be made.
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>> In https://github.com/nix-community/emacs-overlay/issues/318, we
>> received a report about failed external-package builds when using
>> Nix, which has some additional plumbing including
>> https://github.com/nixos/nixpkgs/blob/abcc3146aeb06b8d2ded75bddac3a63544a6be7e/pkgs/build-support/emacs/melpa2nix.el#L26-L32.
>>
>> It was observed that reverting
>> https://git.savannah.gnu.org/cgit/emacs.git/commit/?id=ea9831bb3cb4878273f6f848051c9b8c3c76d5f1
>> would resolve our issue.
>>
>> On my own machine, I don't always encounter the build failure (happened
>> to me once a few weeks ago, and then again today).
That's remarkable -- not only is it difficult to see anything wrong with that change (ea9831bb3c), it actually reverts byte-code generation for `ignore` forms in general so that the bytecode generated for `package-read-from-string` on master is again identical to that on emacs-29.
Andrea, does the native compiler somehow miscompile package-read-from-string?
Since the failure appears to be nondeterministic, perhaps there is a native-comp build race involved?
This bug report was last modified 132 days ago.
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