forked from lix-project/lix
346 lines
9.9 KiB
C++
346 lines
9.9 KiB
C++
#include "command.hh"
|
|
#include "attr-path.hh"
|
|
#include "common-eval-args.hh"
|
|
#include "derivations.hh"
|
|
#include "eval-inline.hh"
|
|
#include "eval.hh"
|
|
#include "get-drvs.hh"
|
|
#include "store-api.hh"
|
|
#include "shared.hh"
|
|
|
|
#include <regex>
|
|
|
|
namespace nix {
|
|
|
|
|
|
SourceExprCommand::SourceExprCommand()
|
|
{
|
|
mkFlag()
|
|
.shortName('f')
|
|
.longName("file")
|
|
.label("file")
|
|
.description("evaluate FILE rather than the default")
|
|
.dest(&file);
|
|
}
|
|
|
|
Value * SourceExprCommand::getSourceExpr(EvalState & state)
|
|
{
|
|
if (vSourceExpr) return *vSourceExpr;
|
|
|
|
auto sToplevel = state.symbols.create("_toplevel");
|
|
|
|
vSourceExpr = allocRootValue(state.allocValue());
|
|
|
|
if (file != "")
|
|
state.evalFile(lookupFileArg(state, file), **vSourceExpr);
|
|
|
|
else {
|
|
|
|
/* Construct the installation source from $NIX_PATH. */
|
|
|
|
auto searchPath = state.getSearchPath();
|
|
|
|
state.mkAttrs(**vSourceExpr, 1024);
|
|
|
|
mkBool(*state.allocAttr(**vSourceExpr, sToplevel), true);
|
|
|
|
std::unordered_set<std::string> seen;
|
|
|
|
auto addEntry = [&](const std::string & name) {
|
|
if (name == "") return;
|
|
if (!seen.insert(name).second) return;
|
|
Value * v1 = state.allocValue();
|
|
mkPrimOpApp(*v1, state.getBuiltin("findFile"), state.getBuiltin("nixPath"));
|
|
Value * v2 = state.allocValue();
|
|
mkApp(*v2, *v1, mkString(*state.allocValue(), name));
|
|
mkApp(*state.allocAttr(**vSourceExpr, state.symbols.create(name)),
|
|
state.getBuiltin("import"), *v2);
|
|
};
|
|
|
|
for (auto & i : searchPath)
|
|
/* Hack to handle channels. */
|
|
if (i.first.empty() && pathExists(i.second + "/manifest.nix")) {
|
|
for (auto & j : readDirectory(i.second))
|
|
if (j.name != "manifest.nix"
|
|
&& pathExists(fmt("%s/%s/default.nix", i.second, j.name)))
|
|
addEntry(j.name);
|
|
} else
|
|
addEntry(i.first);
|
|
|
|
(*vSourceExpr)->attrs->sort();
|
|
}
|
|
|
|
return *vSourceExpr;
|
|
}
|
|
|
|
ref<EvalState> SourceExprCommand::getEvalState()
|
|
{
|
|
if (!evalState)
|
|
evalState = std::make_shared<EvalState>(searchPath, getStore());
|
|
return ref<EvalState>(evalState);
|
|
}
|
|
|
|
Buildable Installable::toBuildable()
|
|
{
|
|
auto buildables = toBuildables();
|
|
if (buildables.size() != 1)
|
|
throw Error("installable '%s' evaluates to %d derivations, where only one is expected", what(), buildables.size());
|
|
return std::move(buildables[0]);
|
|
}
|
|
|
|
struct InstallableStorePath : Installable
|
|
{
|
|
ref<Store> store;
|
|
StorePath storePath;
|
|
|
|
InstallableStorePath(ref<Store> store, const Path & storePath)
|
|
: store(store), storePath(store->parseStorePath(storePath)) { }
|
|
|
|
std::string what() override { return store->printStorePath(storePath); }
|
|
|
|
Buildables toBuildables() override
|
|
{
|
|
std::map<std::string, StorePath> outputs;
|
|
outputs.insert_or_assign("out", storePath.clone());
|
|
Buildable b{
|
|
.drvPath = storePath.isDerivation() ? storePath.clone() : std::optional<StorePath>(),
|
|
.outputs = std::move(outputs)
|
|
};
|
|
Buildables bs;
|
|
bs.push_back(std::move(b));
|
|
return bs;
|
|
}
|
|
|
|
std::optional<StorePath> getStorePath() override
|
|
{
|
|
return storePath.clone();
|
|
}
|
|
};
|
|
|
|
struct InstallableValue : Installable
|
|
{
|
|
SourceExprCommand & cmd;
|
|
|
|
InstallableValue(SourceExprCommand & cmd) : cmd(cmd) { }
|
|
|
|
Buildables toBuildables() override
|
|
{
|
|
auto state = cmd.getEvalState();
|
|
|
|
auto v = toValue(*state).first;
|
|
|
|
Bindings & autoArgs = *cmd.getAutoArgs(*state);
|
|
|
|
DrvInfos drvs;
|
|
getDerivations(*state, *v, "", autoArgs, drvs, false);
|
|
|
|
Buildables res;
|
|
|
|
StorePathSet drvPaths;
|
|
|
|
for (auto & drv : drvs) {
|
|
Buildable b{.drvPath = state->store->parseStorePath(drv.queryDrvPath())};
|
|
drvPaths.insert(b.drvPath->clone());
|
|
|
|
auto outputName = drv.queryOutputName();
|
|
if (outputName == "")
|
|
throw Error("derivation '%s' lacks an 'outputName' attribute", state->store->printStorePath(*b.drvPath));
|
|
|
|
b.outputs.emplace(outputName, state->store->parseStorePath(drv.queryOutPath()));
|
|
|
|
res.push_back(std::move(b));
|
|
}
|
|
|
|
// Hack to recognize .all: if all drvs have the same drvPath,
|
|
// merge the buildables.
|
|
if (drvPaths.size() == 1) {
|
|
Buildable b{.drvPath = drvPaths.begin()->clone()};
|
|
for (auto & b2 : res)
|
|
for (auto & output : b2.outputs)
|
|
b.outputs.insert_or_assign(output.first, output.second.clone());
|
|
Buildables bs;
|
|
bs.push_back(std::move(b));
|
|
return bs;
|
|
} else
|
|
return res;
|
|
}
|
|
};
|
|
|
|
struct InstallableExpr : InstallableValue
|
|
{
|
|
std::string text;
|
|
|
|
InstallableExpr(SourceExprCommand & cmd, const std::string & text)
|
|
: InstallableValue(cmd), text(text) { }
|
|
|
|
std::string what() override { return text; }
|
|
|
|
std::pair<Value *, Pos> toValue(EvalState & state) override
|
|
{
|
|
auto v = state.allocValue();
|
|
state.eval(state.parseExprFromString(text, absPath(".")), *v);
|
|
return {v, noPos};
|
|
}
|
|
};
|
|
|
|
struct InstallableAttrPath : InstallableValue
|
|
{
|
|
std::string attrPath;
|
|
|
|
InstallableAttrPath(SourceExprCommand & cmd, const std::string & attrPath)
|
|
: InstallableValue(cmd), attrPath(attrPath)
|
|
{ }
|
|
|
|
std::string what() override { return attrPath; }
|
|
|
|
std::pair<Value *, Pos> toValue(EvalState & state) override
|
|
{
|
|
auto source = cmd.getSourceExpr(state);
|
|
|
|
Bindings & autoArgs = *cmd.getAutoArgs(state);
|
|
|
|
auto v = findAlongAttrPath(state, attrPath, autoArgs, *source).first;
|
|
state.forceValue(*v);
|
|
|
|
return {v, noPos};
|
|
}
|
|
};
|
|
|
|
// FIXME: extend
|
|
std::string attrRegex = R"([A-Za-z_][A-Za-z0-9-_+]*)";
|
|
static std::regex attrPathRegex(fmt(R"(%1%(\.%1%)*)", attrRegex));
|
|
|
|
static std::vector<std::shared_ptr<Installable>> parseInstallables(
|
|
SourceExprCommand & cmd, ref<Store> store, std::vector<std::string> ss, bool useDefaultInstallables)
|
|
{
|
|
std::vector<std::shared_ptr<Installable>> result;
|
|
|
|
if (ss.empty() && useDefaultInstallables) {
|
|
if (cmd.file == "")
|
|
cmd.file = ".";
|
|
ss = {""};
|
|
}
|
|
|
|
for (auto & s : ss) {
|
|
|
|
if (s.compare(0, 1, "(") == 0)
|
|
result.push_back(std::make_shared<InstallableExpr>(cmd, s));
|
|
|
|
else if (s.find("/") != std::string::npos) {
|
|
|
|
auto path = store->toStorePath(store->followLinksToStore(s));
|
|
|
|
if (store->isStorePath(path))
|
|
result.push_back(std::make_shared<InstallableStorePath>(store, path));
|
|
}
|
|
|
|
else if (s == "" || std::regex_match(s, attrPathRegex))
|
|
result.push_back(std::make_shared<InstallableAttrPath>(cmd, s));
|
|
|
|
else
|
|
throw UsageError("don't know what to do with argument '%s'", s);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
std::shared_ptr<Installable> parseInstallable(
|
|
SourceExprCommand & cmd, ref<Store> store, const std::string & installable,
|
|
bool useDefaultInstallables)
|
|
{
|
|
auto installables = parseInstallables(cmd, store, {installable}, false);
|
|
assert(installables.size() == 1);
|
|
return installables.front();
|
|
}
|
|
|
|
Buildables build(ref<Store> store, RealiseMode mode,
|
|
std::vector<std::shared_ptr<Installable>> installables)
|
|
{
|
|
if (mode != Build)
|
|
settings.readOnlyMode = true;
|
|
|
|
Buildables buildables;
|
|
|
|
std::vector<StorePathWithOutputs> pathsToBuild;
|
|
|
|
for (auto & i : installables) {
|
|
for (auto & b : i->toBuildables()) {
|
|
if (b.drvPath) {
|
|
StringSet outputNames;
|
|
for (auto & output : b.outputs)
|
|
outputNames.insert(output.first);
|
|
pathsToBuild.push_back({*b.drvPath, outputNames});
|
|
} else
|
|
for (auto & output : b.outputs)
|
|
pathsToBuild.push_back({output.second.clone()});
|
|
buildables.push_back(std::move(b));
|
|
}
|
|
}
|
|
|
|
if (mode == DryRun)
|
|
printMissing(store, pathsToBuild, lvlError);
|
|
else if (mode == Build)
|
|
store->buildPaths(pathsToBuild);
|
|
|
|
return buildables;
|
|
}
|
|
|
|
StorePathSet toStorePaths(ref<Store> store, RealiseMode mode,
|
|
std::vector<std::shared_ptr<Installable>> installables)
|
|
{
|
|
StorePathSet outPaths;
|
|
|
|
for (auto & b : build(store, mode, installables))
|
|
for (auto & output : b.outputs)
|
|
outPaths.insert(output.second.clone());
|
|
|
|
return outPaths;
|
|
}
|
|
|
|
StorePath toStorePath(ref<Store> store, RealiseMode mode,
|
|
std::shared_ptr<Installable> installable)
|
|
{
|
|
auto paths = toStorePaths(store, mode, {installable});
|
|
|
|
if (paths.size() != 1)
|
|
throw Error("argument '%s' should evaluate to one store path", installable->what());
|
|
|
|
return paths.begin()->clone();
|
|
}
|
|
|
|
StorePathSet toDerivations(ref<Store> store,
|
|
std::vector<std::shared_ptr<Installable>> installables, bool useDeriver)
|
|
{
|
|
StorePathSet drvPaths;
|
|
|
|
for (auto & i : installables)
|
|
for (auto & b : i->toBuildables()) {
|
|
if (!b.drvPath) {
|
|
if (!useDeriver)
|
|
throw Error("argument '%s' did not evaluate to a derivation", i->what());
|
|
for (auto & output : b.outputs) {
|
|
auto derivers = store->queryValidDerivers(output.second);
|
|
if (derivers.empty())
|
|
throw Error("'%s' does not have a known deriver", i->what());
|
|
// FIXME: use all derivers?
|
|
drvPaths.insert(derivers.begin()->clone());
|
|
}
|
|
} else
|
|
drvPaths.insert(b.drvPath->clone());
|
|
}
|
|
|
|
return drvPaths;
|
|
}
|
|
|
|
void InstallablesCommand::prepare()
|
|
{
|
|
installables = parseInstallables(*this, getStore(), _installables, useDefaultInstallables());
|
|
}
|
|
|
|
void InstallableCommand::prepare()
|
|
{
|
|
installable = parseInstallable(*this, getStore(), _installable, false);
|
|
}
|
|
|
|
}
|