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#include "command.hh"
#include "shared.hh"
#include "eval.hh"
#include "attr-path.hh"
#include "progress-bar.hh"
#include <unistd.h>
using namespace nix;
struct CmdEdit : InstallableCommand
{
std::string description() override
{
return "open the Nix expression of a Nix package in $EDITOR";
}
Examples examples() override
{
return {
Example{
"To open the Nix expression of the GNU Hello package:",
"nix edit nixpkgs.hello"
},
};
}
Category category() override { return catSecondary; }
void run(ref<Store> store) override
{
auto state = getEvalState();
auto [v, pos] = installable->toValue(*state);
try {
pos = findDerivationFilename(*state, *v, installable->what());
} catch (NoPositionInfo &) {
}
if (pos == noPos)
throw Error("cannot find position information for '%s", installable->what());
stopProgressBar();
auto args = editorFor(pos);
execvp(args.front().c_str(), stringsToCharPtrs(args).data());
std::string command;
for (const auto &arg : args) command += " '" + arg + "'";
throw SysError("cannot run command%s", command);
}
};
static auto r1 = registerCommand<CmdEdit>("edit");
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