nix-env: Add a suggestion for when there's a name collision in channels
help new users find a solution to their problem ./result/bin/nix-env -qa hello warning: name collision in input Nix expressions, skipping '/home/artturin/.nix-defexpr/channels_root/master' suggestion: remove 'master' from either the root channels or the user channels hello-2.12 hello-2.12
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@ -128,7 +128,12 @@ static void getAllExprs(EvalState & state,
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if (hasSuffix(attrName, ".nix"))
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if (hasSuffix(attrName, ".nix"))
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attrName = std::string(attrName, 0, attrName.size() - 4);
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attrName = std::string(attrName, 0, attrName.size() - 4);
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if (!seen.insert(attrName).second) {
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if (!seen.insert(attrName).second) {
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printError("warning: name collision in input Nix expressions, skipping '%1%'", path2);
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std::string suggestionMessage = "";
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if (path2.find("channels") != std::string::npos && path.find("channels") != std::string::npos) {
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suggestionMessage = fmt("\nsuggestion: remove '%s' from either the root channels or the user channels", attrName);
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}
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printError("warning: name collision in input Nix expressions, skipping '%1%'"
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"%2%", path2, suggestionMessage);
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continue;
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continue;
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}
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}
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/* Load the expression on demand. */
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/* Load the expression on demand. */
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