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Make rootFS's showPath() render the paths from the original accessors

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This makes paths in error messages behave similar to lazy-trees,
e.g. instead of store paths like

       error: attribute 'foobar' missing
       at /nix/store/ddzfiipzqlrh3gnprmqbadnsnrxsmc9i-source/machine/configuration.nix:209:7:
          208|
          209|       pkgs.foobar
             |       ^
          210|     ];

you now get

       error: attribute 'foobar' missing
       at /home/eelco/Misc/eelco-configurations/machine/configuration.nix:209:7:
          208|
          209|       pkgs.foobar
             |       ^
          210|     ];
This commit is contained in:
Eelco Dolstra 2025-02-20 01:09:49 +01:00
parent 5506428e67
commit b28bc7ae64
10 changed files with 122 additions and 22 deletions
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4
src/libexpr/primops/fetchTree.cc
View file

@ -200,10 +200,12 @@ static void fetchTree(
throw Error("input '%s' is not allowed to use the '__final' attribute", input.to_string());
}
auto [storePath, input2] = input.fetchToStore(state.store);
auto [storePath, accessor, input2] = input.fetchToStore(state.store);
state.allowPath(storePath);
state.storePathAccessors->insert_or_assign(CanonPath(state.store->printStorePath(storePath)), accessor);
emitTreeAttrs(state, storePath, input2, v, params.emptyRevFallback, false);
}