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lix/tests/functional/repl_characterization/data/basic_repl.test
T
piegamesandeldritch horrors 8782c7533f eval: Improve ExprConcatStrings error messages and positions
"while evaluating a path segment" was just plain wrong

Co-authored-by: eldritch horrors <pennae@lix.systems>
Change-Id: I827374635df2887d17a8ee8b1755c078bf0b506b
2026-04-30 17:14:43 +02:00

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nix-repl> 1 + 1
2
nix-repl> :doc builtins.add
Synopsis: builtins.add e1 e2
Return the sum of the numbers e1 and e2.
nix-repl> f = a: "" + a
Expect the trace to not contain any traceback:
nix-repl> f 2
error:
… while concatenating
at «string»:1:11:
1| f = a: "" + a
| ^
error: cannot coerce an integer to a string: 2
nix-repl> :te
showing error traces
Expect the trace to have traceback:
nix-repl> f 2
error:
… from call site
at «string»:1:1:
1| f 2
| ^
… while calling anonymous lambda
at «string»:1:5:
1| f = a: "" + a
| ^
… while concatenating
at «string»:1:11:
1| f = a: "" + a
| ^
error: cannot coerce an integer to a string: 2
Turning it off should also work:
nix-repl> :te
not showing error traces
nix-repl> f 2
error:
… while concatenating
at «string»:1:11:
1| f = a: "" + a
| ^
error: cannot coerce an integer to a string: 2