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3811b334c6
The old syntax is still supported, as long as you don't use a {
in the description - the reason to migrate.
42 lines
788 B
Markdown
42 lines
788 B
Markdown
---
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synopsis: Source locations are printed more consistently in errors
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issues: 561
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prs: 9555
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---
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Source location information is now included in error messages more
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consistently. Given this code:
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```nix
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let
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attr = {foo = "bar";};
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key = {};
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in
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attr.${key}
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```
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Previously, Nix would show this unhelpful message when attempting to evaluate
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it:
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```
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error:
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… while evaluating an attribute name
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error: value is a set while a string was expected
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```
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Now, the error message displays where the problematic value was found:
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```
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error:
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… while evaluating an attribute name
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at bad.nix:4:11:
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3| key = {};
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4| in attr.${key}
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| ^
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5|
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error: value is a set while a string was expected
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```
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