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#include "command.hh"
#include "serve-protocol.hh"
#include "shared.hh"
#include "store-api.hh"
#include "worker-protocol.hh"
using namespace nix;
std::string formatProtocol(unsigned int proto)
{
if (proto) {
auto major = GET_PROTOCOL_MAJOR(proto) >> 8;
auto minor = GET_PROTOCOL_MINOR(proto);
return (format("%1%.%2%") % major % minor).str();
}
return "unknown";
}
struct CmdDoctor : StoreCommand
{
std::string name() override
{
return "doctor";
}
std::string description() override
{
return "check your system for potential problems";
}
void run(ref<Store> store) override
{
std::cout << "Store uri: " << store->getUri() << std::endl;
std::cout << std::endl;
auto type = getStoreType();
if (type < tOther) {
checkNixInPath();
checkProfileRoots(store);
}
checkStoreProtocol(store->getProtocol());
}
void checkNixInPath() {
PathSet dirs;
for (auto & dir : tokenizeString<Strings>(getEnv("PATH"), ":"))
if (pathExists(dir + "/nix-env"))
dirs.insert(dirOf(canonPath(dir + "/nix-env", true)));
if (dirs.size() != 1) {
std::cout << "Warning: multiple versions of nix found in PATH." << std::endl;
std::cout << std::endl;
for (auto & dir : dirs)
std::cout << " " << dir << std::endl;
std::cout << std::endl;
}
}
void checkProfileRoots(ref<Store> store) {
PathSet dirs;
Roots roots = store->findRoots();
for (auto & dir : tokenizeString<Strings>(getEnv("PATH"), ":"))
try {
auto profileDir = canonPath(dirOf(dir), true);
if (hasSuffix(profileDir, "user-environment") &&
store->isValidPath(profileDir)) {
PathSet referrers;
store->computeFSClosure({profileDir}, referrers, true,
settings.gcKeepOutputs, settings.gcKeepDerivations);
bool found = false;
for (auto & i : roots)
if (referrers.find(i.second) != referrers.end())
found = true;
if (!found)
dirs.insert(dir);
}
} catch (SysError &) {}
if (!dirs.empty()) {
std::cout << "Warning: found profiles without a gcroot." << std::endl;
std::cout << "The generation this profile points to will be deleted with the next gc, resulting" << std::endl;
std::cout << "in broken symlinks. Make sure your profiles are in " << settings.nixStateDir << "/profiles." << std::endl;
std::cout << std::endl;
for (auto & dir : dirs)
std::cout << " " << dir << std::endl;
std::cout << std::endl;
}
}
void checkStoreProtocol(unsigned int storeProto) {
auto clientProto = GET_PROTOCOL_MAJOR(SERVE_PROTOCOL_VERSION) == GET_PROTOCOL_MAJOR(storeProto)
? SERVE_PROTOCOL_VERSION
: PROTOCOL_VERSION;
if (clientProto != storeProto) {
std::cout << "Warning: protocol version of this client does not match the store." << std::endl;
std::cout << "While this is not necessarily a problem it's recommended to keep the client in" << std::endl;
std::cout << "sync with the daemon." << std::endl;
std::cout << std::endl;
std::cout << "Client protocol: " << formatProtocol(clientProto) << std::endl;
std::cout << "Store protocol: " << formatProtocol(storeProto) << std::endl;
std::cout << std::endl;
}
}
};
static RegisterCommand r1(make_ref<CmdDoctor>());
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