6fa690291a
This command upgrades Nix to the latest stable version by installing a store path obtained from https://github.com/NixOS/nixpkgs/raw/master/nixos/modules/installer/tools/nix-fallback-paths.nix which is the same store path that the installer at https://nixos.org/nix/install.sh uses. The upgrade fails if Nix is not installed in a profile (e.g. on NixOS, or when installed outside of the Nix store).
113 lines
2.9 KiB
C++
113 lines
2.9 KiB
C++
#include <algorithm>
|
|
|
|
#include "command.hh"
|
|
#include "common-args.hh"
|
|
#include "eval.hh"
|
|
#include "globals.hh"
|
|
#include "legacy.hh"
|
|
#include "shared.hh"
|
|
#include "store-api.hh"
|
|
#include "progress-bar.hh"
|
|
#include "finally.hh"
|
|
|
|
extern std::string chrootHelperName;
|
|
|
|
void chrootHelper(int argc, char * * argv);
|
|
|
|
namespace nix {
|
|
|
|
std::string programPath;
|
|
|
|
struct NixArgs : virtual MultiCommand, virtual MixCommonArgs
|
|
{
|
|
NixArgs() : MultiCommand(*RegisterCommand::commands), MixCommonArgs("nix")
|
|
{
|
|
mkFlag()
|
|
.longName("help")
|
|
.shortName('h')
|
|
.description("show usage information")
|
|
.handler([&]() { showHelpAndExit(); });
|
|
|
|
mkFlag()
|
|
.longName("help-config")
|
|
.description("show configuration options")
|
|
.handler([&]() {
|
|
std::cout << "The following configuration options are available:\n\n";
|
|
Table2 tbl;
|
|
for (const auto & s : settings._getSettings())
|
|
if (!s.second.isAlias)
|
|
tbl.emplace_back(s.first, s.second.setting->description);
|
|
printTable(std::cout, tbl);
|
|
throw Exit();
|
|
});
|
|
|
|
mkFlag()
|
|
.longName("version")
|
|
.description("show version information")
|
|
.handler([&]() { printVersion(programName); });
|
|
}
|
|
|
|
void printFlags(std::ostream & out) override
|
|
{
|
|
Args::printFlags(out);
|
|
std::cout <<
|
|
"\n"
|
|
"In addition, most configuration settings can be overriden using '--<name> <value>'.\n"
|
|
"Boolean settings can be overriden using '--<name>' or '--no-<name>'. See 'nix\n"
|
|
"--help-config' for a list of configuration settings.\n";
|
|
}
|
|
|
|
void showHelpAndExit()
|
|
{
|
|
printHelp(programName, std::cout);
|
|
std::cout << "\nNote: this program is EXPERIMENTAL and subject to change.\n";
|
|
throw Exit();
|
|
}
|
|
};
|
|
|
|
void mainWrapped(int argc, char * * argv)
|
|
{
|
|
verbosity = lvlError;
|
|
settings.verboseBuild = false;
|
|
|
|
/* The chroot helper needs to be run before any threads have been
|
|
started. */
|
|
if (argc > 0 && argv[0] == chrootHelperName) {
|
|
chrootHelper(argc, argv);
|
|
return;
|
|
}
|
|
|
|
initNix();
|
|
initGC();
|
|
|
|
programPath = argv[0];
|
|
string programName = baseNameOf(programPath);
|
|
|
|
{
|
|
auto legacy = (*RegisterLegacyCommand::commands)[programName];
|
|
if (legacy) return legacy(argc, argv);
|
|
}
|
|
|
|
NixArgs args;
|
|
|
|
args.parseCmdline(argvToStrings(argc, argv));
|
|
|
|
if (!args.command) args.showHelpAndExit();
|
|
|
|
Finally f([]() { stopProgressBar(); });
|
|
|
|
if (isatty(STDERR_FILENO))
|
|
startProgressBar();
|
|
|
|
args.command->prepare();
|
|
args.command->run();
|
|
}
|
|
|
|
}
|
|
|
|
int main(int argc, char * * argv)
|
|
{
|
|
return nix::handleExceptions(argv[0], [&]() {
|
|
nix::mainWrapped(argc, argv);
|
|
});
|
|
}
|