nix-super/src/nix/installables.hh
Eelco Dolstra e1a94ad852 Backport 'nix dev-shell' from the flakes branch
This also adds a '--profile' option to 'nix build' (replacing 'nix-env
--set').
2020-03-30 19:16:45 +02:00

45 lines
818 B
C++

#pragma once
#include "util.hh"
#include "path.hh"
#include "eval.hh"
#include <optional>
namespace nix {
struct Buildable
{
std::optional<StorePath> drvPath;
std::map<std::string, StorePath> outputs;
};
typedef std::vector<Buildable> Buildables;
struct Installable
{
virtual ~Installable() { }
virtual std::string what() = 0;
virtual Buildables toBuildables()
{
throw Error("argument '%s' cannot be built", what());
}
Buildable toBuildable();
virtual std::pair<Value *, Pos> toValue(EvalState & state)
{
throw Error("argument '%s' cannot be evaluated", what());
}
/* Return a value only if this installable is a store path or a
symlink to it. */
virtual std::optional<StorePath> getStorePath()
{
return {};
}
};
}