error: caught non-lix exception for bad inline toml machine specs #1083

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opened 2025-12-22 15:34:55 +00:00 by pennae · 0 comments

pennae commented 2025-12-22 15:34:55 +00:00

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Describe the bug

nix build -j0 -f test.nix --builders "version = 1\nmachines.foo.uri = snafu"

fails with

error: caught non-lix exception: (unknown):-1: failed: std::exception: error: bad machine specification: failed to convert column #3 in a row: 'version = 1\nmachines.foo.uri = snafu' to 'unsigned int'
       stack: 555555816720

Expected behavior

a better error message. ignoring the builders entirely may be an option too, but a better message is mandatory

nix --version output

nix (Lix, like Nix) 2.95.0-pre20251215-dev_5376bbe

## Describe the bug ``` nix build -j0 -f test.nix --builders "version = 1\nmachines.foo.uri = snafu" ``` fails with ``` error: caught non-lix exception: (unknown):-1: failed: std::exception: error: bad machine specification: failed to convert column #3 in a row: 'version = 1\nmachines.foo.uri = snafu' to 'unsigned int' stack: 555555816720 ``` ## Expected behavior a better error message. ignoring the builders entirely may be an option too, but a better message is mandatory ## `nix --version` output `nix (Lix, like Nix) 2.95.0-pre20251215-dev_5376bbe`

pennae added the

stability

E/reproducible

bug

ux

Area/cli

crash 💥

Affects/Only nightly

Area/remote-builds

E/easy

labels 2025-12-22 15:34:55 +00:00

pennae added this to the new config format project 2025-12-22 15:34:55 +00:00

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Reference

lix-project/lix#1083

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