forked from lix-project/lix
eldritch horrors
87e6ac5eb7
Print the value in `value is X while a Y is expected` error (cherry picked from commit5f72a97092) Change-Id:Idb4bc903ae59a0f5b6fb3b1da4d47970fe0a6efe
32 lines
788 B
Markdown
32 lines
788 B
Markdown
---
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synopsis: Better error reporting for `with` expressions
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prs: 9658
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---
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`with` expressions using non-attrset values to resolve variables are now reported with proper positions.
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Previously an incorrect `with` expression would report no position at all, making it hard to determine where the error originated:
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```
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nix-repl> with 1; a
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error:
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… <borked>
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at «none»:0: (source not available)
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error: value is an integer while a set was expected
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```
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Now position information is preserved and reported as with most other errors:
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```
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nix-repl> with 1; a
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error:
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… while evaluating the first subexpression of a with expression
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at «string»:1:1:
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1| with 1; a
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| ^
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error: expected a set but found an integer: 1
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```
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