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