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From: Max Gilmour <max.gilmour@canonical.com>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: node-source-map: mapping_callback import FTBFS with Rust 1.96+
Message-ID: <178475643851.131612.12782607006305872694.reportbug@hildegard.router90e5a8.com>
X-Mailer: reportbug 13.2.0+ubuntu1
Date: Wed, 22 Jul 2026 14:40:38 -0700
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Source: node-source-map
Version: 0.8.0+dfsg-1
Severity: normal
Tags: ftbfs upstream

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
]