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nix profile: Support overriding outputs

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This commit is contained in:
Eelco Dolstra 2022-05-03 14:37:28 +02:00
parent 4a79cba511
commit a3c6c5b1c7
7 changed files with 101 additions and 19 deletions
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40
src/libstore/path-with-outputs.cc
View file

@ -1,5 +1,6 @@
#include "path-with-outputs.hh"
#include "store-api.hh"
#include "nlohmann/json.hpp"
#include <regex>
@ -84,4 +85,43 @@ std::pair<std::string, OutputsSpec> parseOutputsSpec(const std::string & s)
return {match[1], tokenizeString<OutputNames>(match[4].str(), ",")};
}
std::string printOutputsSpec(const OutputsSpec & outputsSpec)
{
if (std::get_if<DefaultOutputs>(&outputsSpec))
return "";
if (std::get_if<AllOutputs>(&outputsSpec))
return "^*";
if (auto outputNames = std::get_if<OutputNames>(&outputsSpec))
return "^" + concatStringsSep(",", *outputNames);
assert(false);
}
void to_json(nlohmann::json & json, const OutputsSpec & outputsSpec)
{
if (std::get_if<DefaultOutputs>(&outputsSpec))
json = nullptr;
else if (std::get_if<AllOutputs>(&outputsSpec))
json = std::vector<std::string>({"*"});
else if (auto outputNames = std::get_if<OutputNames>(&outputsSpec))
json = *outputNames;
}
void from_json(const nlohmann::json & json, OutputsSpec & outputsSpec)
{
if (json.is_null())
outputsSpec = DefaultOutputs();
else {
auto names = json.get<OutputNames>();
if (names == OutputNames({"*"}))
outputsSpec = AllOutputs();
else
outputsSpec = names;
}
}
}

14
src/libstore/path-with-outputs.hh
View file

@ -4,6 +4,7 @@
#include "path.hh"
#include "derived-path.hh"
#include "nlohmann/json_fwd.hpp"
namespace nix {
@ -34,9 +35,13 @@ StorePathWithOutputs followLinksToStorePathWithOutputs(const Store & store, std:
typedef std::set<std::string> OutputNames;
struct AllOutputs { };
struct AllOutputs {
bool operator < (const AllOutputs & _) const { return false; }
};
struct DefaultOutputs { };
struct DefaultOutputs {
bool operator < (const DefaultOutputs & _) const { return false; }
};
typedef std::variant<DefaultOutputs, AllOutputs, OutputNames> OutputsSpec;
@ -44,4 +49,9 @@ typedef std::variant<DefaultOutputs, AllOutputs, OutputNames> OutputsSpec;
'prefix^*', returning the prefix and the outputs spec. */
std::pair<std::string, OutputsSpec> parseOutputsSpec(const std::string & s);
std::string printOutputsSpec(const OutputsSpec & outputsSpec);
void to_json(nlohmann::json &, const OutputsSpec &);
void from_json(const nlohmann::json &, OutputsSpec &);
}