lix/src/nix/flake.cc

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#include "primops/flake.hh"
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#include "command.hh"
#include "common-args.hh"
#include "shared.hh"
#include "progress-bar.hh"
#include "eval.hh"
#include <nlohmann/json.hpp>
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using namespace nix;
struct CmdFlakeList : StoreCommand, MixEvalArgs
{
std::string name() override
{
return "list";
}
std::string description() override
{
return "list available Nix flakes";
}
void run(nix::ref<nix::Store> store) override
{
auto evalState = std::make_shared<EvalState>(searchPath, store);
auto registry = evalState->getFlakeRegistry();
stopProgressBar();
for (auto & entry : registry.entries) {
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std::cout << entry.first << " " << entry.second.ref.to_string() << "\n";
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}
}
};
struct CmdFlakeInfo : FlakeCommand, JsonFormattable
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{
std::string name() override
{
return "info";
}
std::string description() override
{
return "list info about a given flake";
}
void run(nix::ref<nix::Store> store) override
{
auto evalState = std::make_shared<EvalState>(searchPath, store);
nix::Flake flake = nix::getFlake(*evalState, FlakeRef(flakeUri));
if (jsonFormatting) {
nlohmann::json j;
j["location"] = flake.path;
j["description"] = flake.description;
std::cout << j.dump(4) << std::endl;
} else {
std::cout << "Location: " << flake.path << "\n";
std::cout << "Description: " << flake.description << "\n";
}
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}
};
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struct CmdFlake : virtual MultiCommand, virtual Command
{
CmdFlake()
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: MultiCommand({make_ref<CmdFlakeList>(), make_ref<CmdFlakeInfo>()})
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{
}
std::string name() override
{
return "flake";
}
std::string description() override
{
return "manage Nix flakes";
}
void run() override
{
if (!command)
throw UsageError("'nix flake' requires a sub-command.");
command->run();
}
void printHelp(const string & programName, std::ostream & out) override
{
MultiCommand::printHelp(programName, out);
}
};
static RegisterCommand r1(make_ref<CmdFlake>());