forked from lix-project/lix
nix doctor: add warning for multiple versions
It's pretty easy to unintentionally install a second version of nix into the user profile when using a daemon install. In this case it looks like nix was upgraded while the nix-daemon is probably still unning an older version.
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@ -33,9 +33,26 @@ struct CmdDoctor : StoreCommand
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std::cout << "Store uri: " << store->getUri() << std::endl;
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std::cout << std::endl;
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checkNixInPath();
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checkStoreProtocol(store->getProtocol());
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}
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void checkNixInPath() {
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PathSet dirs;
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for (auto & dir : tokenizeString<Strings>(getEnv("PATH"), ":"))
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if (pathExists(dir + "/nix-env"))
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dirs.insert(dirOf(canonPath(dir + "/nix-env", true)));
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if (dirs.size() != 1) {
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std::cout << "Warning: multiple versions of nix found in PATH." << std::endl;
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std::cout << std::endl;
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for (auto & dir : dirs)
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std::cout << " " << dir << std::endl;
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std::cout << std::endl;
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}
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}
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void checkStoreProtocol(unsigned int storeProto) {
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auto clientProto = GET_PROTOCOL_MAJOR(SERVE_PROTOCOL_VERSION) == GET_PROTOCOL_MAJOR(storeProto)
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? SERVE_PROTOCOL_VERSION
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