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nix flake info --json: List the "provides"

Browse source 
It also lists the contents of "checks" and "packages".

For example:

  $ nix flake info --json | jq
  {
    "branch": "HEAD",
    "description": "The purely functional package manager",
    "epoch": 2019,
    "id": "nix",
    "lastModified": 1559161142,
    "path": "/nix/store/2w2qla8735dbxah8gai8r1nsbf5x4f5d-source",
    "provides": {
      "checks": {
        "binaryTarball": {},
        "nix-copy-closure": {},
        "perlBindings": {},
        "remoteBuilds": {},
        "setuid": {}
      },
      "defaultPackage": {},
      "devShell": {},
      "hydraJobs": {},
      "packages": {
        "nix": {},
        "nix-perl-bindings": {}
      }
    },
    "revCount": 6955,
    "revision": "8cb24e04e8b6cc60e2504733afe78e0eadafcd98",
    "uri": "/home/eelco/Dev/nix"
  }

Fixes #2820.
This commit is contained in:
Eelco Dolstra 2019-05-29 22:17:08 +02:00
parent 3488fa7c6c
commit 49436bdbb7
No known key found for this signature in database
GPG key ID: 8170B4726D7198DE
1 changed files with 42 additions and 16 deletions
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58
src/nix/flake.cc
View file

@ -199,6 +199,19 @@ struct CmdFlakeUpdate : FlakeCommand
} }
}; };
static void enumerateProvides(EvalState & state, Value & vFlake,
std::function<void(const std::string & name, Value & vProvide)> callback)
{
state.forceAttrs(vFlake);
auto vProvides = (*vFlake.attrs->get(state.symbols.create("provides")))->value;
state.forceAttrs(*vProvides);
for (auto & attr : *vProvides->attrs)
callback(attr.name, *attr.value);
}
struct CmdFlakeInfo : FlakeCommand, MixJSON struct CmdFlakeInfo : FlakeCommand, MixJSON
{ {
std::string name() override std::string name() override
@ -215,26 +228,39 @@ struct CmdFlakeInfo : FlakeCommand, MixJSON
{ {
auto flake = getFlake(); auto flake = getFlake();
stopProgressBar(); stopProgressBar();
if (json)
std::cout << flakeToJson(flake).dump() << std::endl; if (json) {
else auto json = flakeToJson(flake);
auto state = getEvalState();
auto vFlake = state->allocValue();
flake::callFlake(*state, flake, *vFlake);
auto provides = nlohmann::json::object();
enumerateProvides(*state,
*vFlake,
[&](const std::string & name, Value & vProvide) {
auto provide = nlohmann::json::object();
if (name == "checks" || name == "packages") {
state->forceAttrs(vProvide);
for (auto & aCheck : *vProvide.attrs)
provide[aCheck.name] = nlohmann::json::object();
}
provides[name] = provide;
});
json["provides"] = std::move(provides);
std::cout << json.dump() << std::endl;
} else
printFlakeInfo(flake); printFlakeInfo(flake);
} }
}; };
static void enumerateProvides(EvalState & state, Value & vFlake,
std::function<void(const std::string & name, Value & vProvide)> callback)
{
state.forceAttrs(vFlake);
auto vProvides = (*vFlake.attrs->get(state.symbols.create("provides")))->value;
state.forceAttrs(*vProvides);
for (auto & attr : *vProvides->attrs)
callback(attr.name, *attr.value);
}
struct CmdFlakeCheck : FlakeCommand, MixJSON struct CmdFlakeCheck : FlakeCommand, MixJSON
{ {
bool build = true; bool build = true;