Dear node-source-map maintainers,

While this problem has no effect on node-source-map now, once rustc
updates to 1.96 the package will FTBFS, as tested in an Ubuntu 26.10 PPA
with Rust 1.97. I have linked a failing buildlog[1].

This is due to Rust 1.96 no longer passing --allow-undefined to
wasm-ld[2].

I have also replicated the bug upstream[3] and submitted a fix[4] which
follows the Rust team's recommendations[5].

Best wishes,
Max

[1]: https://launchpadlibrarian.net/870273467/buildlog_ubuntu-stonking-amd64.node-source-map_0.8.0+dfsg-1_BUILDING.txt.gz
[2]: https://github.com/rust-lang/rust/pull/149868
[3]: https://github.com/mozilla/source-map/issues/530
[4]: https://github.com/mozilla/source-map/pull/531
[5]: https://github.com/rust-lang/rust/pull/149868#issuecomment-3730522786

Dear node-source-map maintainers,

I have attached the patch that will fix the future build failure with Rust
1.96+. I have ensured it builds against both Rust 1.95 in Debian unstable
and Rust 1.97 in a test Ubuntu 26.10 PPA.

Please let me know if you need any more info.

Best wishes,
Max

Hello,

Bug #1142614 in node-source-map reported by you has been fixed in the
Git repository and is awaiting an upload. You can see the commit
message below and you can check the diff of the fix at:

https://salsa.debian.org/js-team/node-source-map/-/commit/32edd92893ed3768abeb11ddabc73511922df39e
------------------------------------------------------------------------
Fix mapping_callback import on Rust 1.96+

Closes: #1142614
------------------------------------------------------------------------

(this message was generated automatically)
-- 
Greetings

https://bugs.debian.org/1142614

rustc 1.96 was uploaded to Unstable today, so I'm raising the severity
of this issue.

The fix was committed to Salsa months ago but wasn't uploaded.

Thank you,
Jeremy Bícha

We believe that the bug you reported is fixed in the latest version of
node-source-map, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1142614@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Xavier Guimard <yadd@debian.org> (supplier of updated node-source-map package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Sat, 03 Oct 2026 08:12:38 +0200
Source: node-source-map
Architecture: source
Version: 0.8.0+dfsg-2
Distribution: unstable
Urgency: medium
Maintainer: Debian Javascript Maintainers <pkg-javascript-devel@lists.alioth.debian.org>
Changed-By: Xavier Guimard <yadd@debian.org>
Closes: 1142614
Changes:
 node-source-map (0.8.0+dfsg-2) unstable; urgency=medium
 .
   [ Max Gilmour ]
   * Fix mapping_callback import on Rust 1.96+ (Closes: #1142614)
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