Error handling: Difference between revisions
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To summarise debugging approaches discussed in this article, you can use <code>break</code> to debug nix code, <code>breakpointHook</code> to debug nix builds and interactive tools to debug NixOS tests. | To summarise debugging approaches discussed in this article, you can use <code>break</code> to debug nix code, <code>breakpointHook</code> to debug nix builds and interactive tools to debug NixOS tests. | ||
Another tool that can be useful to improve error messages is <code>builtins.unsafeGetAttrPos | |||
</code> ([https://github.com/NixOS/nix/blob/b17c4290cf61d8a0386817b87231762c175097c5/tests/lang/eval-okay-getattrpos.nix example]) which returns the line and column of where an attribute is defined. Currently this seems to be limited to attributes defined in the same file though, is undocumented and considered bad practice. | |||
== References == | == References == | ||