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-rw-r--r--doc/manual/rl-next/source-location-in-while-evaluating-attribute.md23
1 files changed, 23 insertions, 0 deletions
diff --git a/doc/manual/rl-next/source-location-in-while-evaluating-attribute.md b/doc/manual/rl-next/source-location-in-while-evaluating-attribute.md
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index 000000000..0e0b74c5a
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+++ b/doc/manual/rl-next/source-location-in-while-evaluating-attribute.md
@@ -0,0 +1,23 @@
+---
+synopsis: "In the debugger, `while evaluating the attribute` errors now include position information"
+prs: 9915
+---
+
+Before:
+
+```
+0: while evaluating the attribute 'python311.pythonForBuild.pkgs'
+0x600001522598
+```
+
+After:
+
+```
+0: while evaluating the attribute 'python311.pythonForBuild.pkgs'
+/nix/store/hg65h51xnp74ikahns9hyf3py5mlbbqq-source/overrides/default.nix:132:27
+
+ 131|
+ 132| bootstrappingBase = pkgs.${self.python.pythonAttr}.pythonForBuild.pkgs;
+ | ^
+ 133| in
+```