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// FIXME: integrate this with nix path-info?
#include "command.hh"
#include "common-args.hh"
#include "store-api.hh"
#include "archive.hh"
#include "json.hh"
#include "derivations.hh"
using namespace nix;
struct CmdShowDerivation : InstallablesCommand
{
bool recursive = false;
CmdShowDerivation()
{
addFlag({
.longName = "recursive",
.shortName = 'r',
.description = "include the dependencies of the specified derivations",
.handler = {&recursive, true}
});
}
std::string description() override
{
return "show the contents of a store derivation";
}
Examples examples() override
{
return {
Example{
"To show the store derivation that results from evaluating the Hello package:",
"nix show-derivation nixpkgs.hello"
},
Example{
"To show the full derivation graph (if available) that produced your NixOS system:",
"nix show-derivation -r /run/current-system"
},
};
}
Category category() override { return catUtility; }
void run(ref<Store> store) override
{
auto drvPaths = toDerivations(store, installables, true);
if (recursive) {
StorePathSet closure;
store->computeFSClosure(drvPaths, closure);
drvPaths = std::move(closure);
}
{
JSONObject jsonRoot(std::cout, true);
for (auto & drvPath : drvPaths) {
if (!drvPath.isDerivation()) continue;
auto drvPathS = store->printStorePath(drvPath);
auto drvObj(jsonRoot.object(drvPathS));
auto drv = readDerivation(*store, drvPathS);
{
auto outputsObj(drvObj.object("outputs"));
for (auto & output : drv.outputs) {
auto outputObj(outputsObj.object(output.first));
outputObj.attr("path", store->printStorePath(output.second.path));
if (output.second.hash != "") {
outputObj.attr("hashAlgo", output.second.hashAlgo);
outputObj.attr("hash", output.second.hash);
}
}
}
{
auto inputsList(drvObj.list("inputSrcs"));
for (auto & input : drv.inputSrcs)
inputsList.elem(store->printStorePath(input));
}
{
auto inputDrvsObj(drvObj.object("inputDrvs"));
for (auto & input : drv.inputDrvs) {
auto inputList(inputDrvsObj.list(store->printStorePath(input.first)));
for (auto & outputId : input.second)
inputList.elem(outputId);
}
}
drvObj.attr("platform", drv.platform);
drvObj.attr("builder", drv.builder);
{
auto argsList(drvObj.list("args"));
for (auto & arg : drv.args)
argsList.elem(arg);
}
{
auto envObj(drvObj.object("env"));
for (auto & var : drv.env)
envObj.attr(var.first, var.second);
}
}
}
std::cout << "\n";
}
};
static auto r1 = registerCommand<CmdShowDerivation>("show-derivation");
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