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Decode virtual paths in user-thrown errors

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E.g. instead of

  error: Package ‘steam’ in /__virtual__/4/pkgs/games/steam/steam.nix:43 has an unfree license (‘unfreeRedistributable’), refusing to evaluate.

you now get

  error: Package ‘steam’ in «github:nixos/nixpkgs/b82ccafb54163ab9024e893e578d840577785fea»/pkgs/games/steam/steam.nix:43 has an unfree license (‘unfreeRedistributable’), refusing to evaluate.
This commit is contained in:
Eelco Dolstra 2022-09-12 12:52:07 +02:00
parent b293b33322
commit 48a5879b63
4 changed files with 39 additions and 4 deletions
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2
src/libexpr/eval.cc
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@ -1757,7 +1757,7 @@ void EvalState::autoCallFunction(Bindings & args, Value & fun, Value & res)
Nix attempted to evaluate a function as a top level expression; in
this case it must have its arguments supplied either by default
values, or passed explicitly with '--arg' or '--argstr'. See
https://nixos.org/manual/nix/stable/expressions/language-constructs.html#functions.)", symbols[i.name],
https://nixos.org/manual/nix/stable/expressions/language-constructs.html#functions.)", symbols[i.name],
*fun.lambda.env, *fun.lambda.fun);
}
}