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Merge pull request #9915 from 9999years/evaluating-attribute-position

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Add position information to `while evaluating the attribute` errors in the debugger

(cherry picked from commit ffe67c86a8ef3695e5c8b9c9800c192ac633dded)
Change-Id: I177ea5ec60898abe09fb9d80d9602b2a32ff8f44
This commit is contained in:
eldritch horrors 2024-03-04 09:14:11 +01:00
parent 4551dd0f2c
commit 5bda6d9dc8
2 changed files with 24 additions and 1 deletions
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23
doc/manual/rl-next/source-location-in-while-evaluating-attribute.md Normal file
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@ -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
```

2
src/libexpr/eval.cc
View file

@ -1457,7 +1457,7 @@ void ExprSelect::eval(EvalState & state, Env & env, Value & v)
state,
*this,
env,
state.positions[pos2],
state.positions[getPos()],
"while evaluating the attribute '%1%'",
showAttrPath(state, env, attrPath))
: nullptr;