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Merge pull request #4803 from ShamrockLee/nix-channel-list-generations

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Add `nix-channel --list-generations`
This commit is contained in:
John Ericson 2023-06-14 18:30:35 +02:00 • committed by GitHub
commit ff905cb796
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4 changed files with 21 additions and 1 deletions
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8
src/nix-channel/nix-channel.cc
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@ -177,6 +177,7 @@ static int main_nix_channel(int argc, char ** argv)
cRemove,
cList,
cUpdate,
cListGenerations,
cRollback
} cmd = cNone;
std::vector<std::string> args;
@ -193,6 +194,8 @@ static int main_nix_channel(int argc, char ** argv)
cmd = cList;
} else if (*arg == "--update") {
cmd = cUpdate;
} else if (*arg == "--list-generations") {
cmd = cListGenerations;
} else if (*arg == "--rollback") {
cmd = cRollback;
} else {
@ -237,6 +240,11 @@ static int main_nix_channel(int argc, char ** argv)
case cUpdate:
update(StringSet(args.begin(), args.end()));
break;
case cListGenerations:
if (!args.empty())
throw UsageError("'--list-generations' expects no arguments");
std::cout << runProgram(settings.nixBinDir + "/nix-env", false, {"--profile", profile, "--list-generations"}) << std::flush;
break;
case cRollback:
if (args.size() > 1)
throw UsageError("'--rollback' has at most one argument");