nix-super/doc/manual/rl-next/source-positions-in-errors.md
Robert Hensing 3811b334c6 rl-next: Use markdown frontmatter syntax
The old syntax is still supported, as long as you don't use a {
in the description - the reason to migrate.
2023-12-09 19:57:55 +01:00

788 B

synopsis issues prs
Source locations are printed more consistently in errors 561 9555

Source location information is now included in error messages more consistently. Given this code:

let
  attr = {foo = "bar";};
  key = {};
in
  attr.${key}

Previously, Nix would show this unhelpful message when attempting to evaluate it:

error:
       … while evaluating an attribute name

       error: value is a set while a string was expected

Now, the error message displays where the problematic value was found:

error:
       … while evaluating an attribute name

         at bad.nix:4:11:

            3|   key = {};
            4| in attr.${key}
             |           ^
            5|

       error: value is a set while a string was expected