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#include "common-eval-args.hh"
#include "shared.hh"
#include "download.hh"
#include "util.hh"
#include "eval.hh"
#include "fetchers/registry.hh"
#include "flake/flakeref.hh"
namespace nix {
MixEvalArgs::MixEvalArgs()
{
mkFlag()
.longName("arg")
.description("argument to be passed to Nix functions")
.labels({"name", "expr"})
.handler([&](std::vector<std::string> ss) { autoArgs[ss[0]] = 'E' + ss[1]; });
mkFlag()
.longName("argstr")
.description("string-valued argument to be passed to Nix functions")
.labels({"name", "string"})
.handler([&](std::vector<std::string> ss) { autoArgs[ss[0]] = 'S' + ss[1]; });
mkFlag()
.shortName('I')
.longName("include")
.description("add a path to the list of locations used to look up <...> file names")
.label("path")
.handler([&](std::string s) { searchPath.push_back(s); });
mkFlag()
.longName("impure")
.description("allow access to mutable paths and repositories")
.handler([&](std::vector<std::string> ss) {
evalSettings.pureEval = false;
});
mkFlag()
.longName("override-flake")
.labels({"original-ref", "resolved-ref"})
.description("override a flake registry value")
.arity(2)
.handler([&](std::vector<std::string> ss) {
auto from = parseFlakeRef(ss[0], absPath("."));
auto to = parseFlakeRef(ss[1], absPath("."));
fetchers::Input::Attrs extraAttrs;
if (to.subdir != "") extraAttrs["dir"] = to.subdir;
fetchers::overrideRegistry(from.input, to.input, extraAttrs);
});
}
Bindings * MixEvalArgs::getAutoArgs(EvalState & state)
{
Bindings * res = state.allocBindings(autoArgs.size());
for (auto & i : autoArgs) {
Value * v = state.allocValue();
if (i.second[0] == 'E')
state.mkThunk_(*v, state.parseExprFromString(string(i.second, 1), absPath(".")));
else
mkString(*v, string(i.second, 1));
res->push_back(Attr(state.symbols.create(i.first), v));
}
res->sort();
return res;
}
Path lookupFileArg(EvalState & state, string s)
{
if (isUri(s)) {
CachedDownloadRequest request(s);
request.unpack = true;
return getDownloader()->downloadCached(state.store, request).path;
} else if (s.size() > 2 && s.at(0) == '<' && s.at(s.size() - 1) == '>') {
Path p = s.substr(1, s.size() - 2);
return state.findFile(p);
} else
return absPath(s);
}
}
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