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lix-project:release-2.91
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lix-project:own-thread
lix-project:jade/fixup-readme-and-version
lix-project:jade/lixexpr

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66
flake.lock
View file

@ -23,11 +23,11 @@
]
},
"locked": {
"lastModified": 1730504689,
"narHash": "sha256-hgmguH29K2fvs9szpq2r3pz2/8cJd2LPS+b4tfNFCwE=",
"lastModified": 1701473968,
"narHash": "sha256-YcVE5emp1qQ8ieHUnxt1wCZCC3ZfAS+SRRWZ2TMda7E=",
"owner": "hercules-ci",
"repo": "flake-parts",
"rev": "506278e768c2a08bec68eb62932193e341f55c90",
"rev": "34fed993f1674c8d06d58b37ce1e0fe5eebcb9f5",
"type": "github"
},
"original": {
@ -39,7 +39,6 @@
"lix": {
"inputs": {
"flake-compat": "flake-compat",
"nix2container": "nix2container",
"nixpkgs": [
"nixpkgs"
],
@ -47,15 +46,18 @@
"pre-commit-hooks": "pre-commit-hooks"
},
"locked": {
"lastModified": 1731683711,
"narHash": "sha256-bq21I1EjXJa/s5Rra9J9ot2NkPCnI0F5uNPurwYLdpE=",
"rev": "c859d03013712b349d82ee6223948d6d03e63a8d",
"type": "tarball",
"url": "https://git.lix.systems/api/v1/repos/lix-project/lix/archive/c859d03013712b349d82ee6223948d6d03e63a8d.tar.gz?rev=c859d03013712b349d82ee6223948d6d03e63a8d"
"lastModified": 1714955862,
"narHash": "sha256-REWlo2RYHfJkxnmZTEJu3Cd/2VM+wjjpPy7Xi4BdDTQ=",
"ref": "refs/tags/2.90-beta.1",
"rev": "b6799ab0374a8e1907a48915d3187e07da41d88c",
"revCount": 15501,
"type": "git",
"url": "https://git@git.lix.systems/lix-project/lix"
},
"original": {
"type": "tarball",
"url": "https://git.lix.systems/lix-project/lix/archive/main.tar.gz"
"ref": "refs/tags/2.90-beta.1",
"type": "git",
"url": "https://git@git.lix.systems/lix-project/lix"
}
},
"nix-github-actions": {
@ -65,11 +67,11 @@
]
},
"locked": {
"lastModified": 1729742964,
"narHash": "sha256-B4mzTcQ0FZHdpeWcpDYPERtyjJd/NIuaQ9+BV1h+MpA=",
"lastModified": 1701208414,
"narHash": "sha256-xrQ0FyhwTZK6BwKhahIkUVZhMNk21IEI1nUcWSONtpo=",
"owner": "nix-community",
"repo": "nix-github-actions",
"rev": "e04df33f62cdcf93d73e9a04142464753a16db67",
"rev": "93e39cc1a087d65bcf7a132e75a650c44dd2b734",
"type": "github"
},
"original": {
@ -78,34 +80,18 @@
"type": "github"
}
},
"nix2container": {
"flake": false,
"locked": {
"lastModified": 1724996935,
"narHash": "sha256-njRK9vvZ1JJsP8oV2OgkBrpJhgQezI03S7gzskCcHos=",
"owner": "nlewo",
"repo": "nix2container",
"rev": "fa6bb0a1159f55d071ba99331355955ae30b3401",
"type": "github"
},
"original": {
"owner": "nlewo",
"repo": "nix2container",
"type": "github"
}
},
"nixpkgs": {
"locked": {
"lastModified": 1731663789,
"narHash": "sha256-x07g4NcqGP6mQn6AISXJaks9sQYDjZmTMBlKIvajvyc=",
"lastModified": 1703134684,
"narHash": "sha256-SQmng1EnBFLzS7WSRyPM9HgmZP2kLJcPAz+Ug/nug6o=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "035d434d48f4375ac5d3a620954cf5fda7dd7c36",
"rev": "d6863cbcbbb80e71cecfc03356db1cda38919523",
"type": "github"
},
"original": {
"owner": "NixOS",
"ref": "nixos-24.05-small",
"ref": "nixpkgs-unstable",
"repo": "nixpkgs",
"type": "github"
}
@ -129,11 +115,11 @@
"pre-commit-hooks": {
"flake": false,
"locked": {
"lastModified": 1726745158,
"narHash": "sha256-D5AegvGoEjt4rkKedmxlSEmC+nNLMBPWFxvmYnVLhjk=",
"lastModified": 1712055707,
"narHash": "sha256-4XLvuSIDZJGS17xEwSrNuJLL7UjDYKGJSbK1WWX2AK8=",
"owner": "cachix",
"repo": "git-hooks.nix",
"rev": "4e743a6920eab45e8ba0fbe49dc459f1423a4b74",
"rev": "e35aed5fda3cc79f88ed7f1795021e559582093a",
"type": "github"
},
"original": {
@ -158,11 +144,11 @@
]
},
"locked": {
"lastModified": 1730321837,
"narHash": "sha256-vK+a09qq19QNu2MlLcvN4qcRctJbqWkX7ahgPZ/+maI=",
"lastModified": 1702979157,
"narHash": "sha256-RnFBbLbpqtn4AoJGXKevQMCGhra4h6G2MPcuTSZZQ+g=",
"owner": "numtide",
"repo": "treefmt-nix",
"rev": "746901bb8dba96d154b66492a29f5db0693dbfcc",
"rev": "2961375283668d867e64129c22af532de8e77734",
"type": "github"
},
"original": {

4
flake.nix
View file

@ -1,7 +1,7 @@
{
description = "Hydra's builtin hydra-eval-jobs as a standalone";
inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.05-small";
inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
inputs.flake-parts.url = "github:hercules-ci/flake-parts";
inputs.flake-parts.inputs.nixpkgs-lib.follows = "nixpkgs";
inputs.treefmt-nix.url = "github:numtide/treefmt-nix";
@ -9,7 +9,7 @@
inputs.nix-github-actions.url = "github:nix-community/nix-github-actions";
inputs.nix-github-actions.inputs.nixpkgs.follows = "nixpkgs";
inputs.lix = {
url = "https://git.lix.systems/lix-project/lix/archive/main.tar.gz";
url = "git+https://git@git.lix.systems/lix-project/lix?ref=refs/tags/2.90-beta.1";
inputs.nixpkgs.follows = "nixpkgs";
};

5
meson.build
View file

@ -1,11 +1,6 @@
project('nix-eval-jobs', 'cpp',
version : '0.1.6',
license : 'GPL-3.0',
default_options : [
'debug=true',
'optimization=2',
'cpp_std=c++20',
],
)
nix_main_dep = dependency('lix-main', required: true)

1
shell.nix
View file

@ -23,7 +23,6 @@ in
pkgs.mkShell {
inherit (nix-eval-jobs) buildInputs;
nativeBuildInputs = nix-eval-jobs.nativeBuildInputs ++ [
pkgs.clang-tools
(pkgs.python3.withPackages (ps: [
ps.pytest
]))

33
src/drv.cc
View file

@ -23,17 +23,14 @@
#include "drv.hh"
#include "eval-args.hh"
static bool
queryIsCached(nix::Store &store,
std::map<std::string, std::optional<std::string>> &outputs) {
static bool queryIsCached(nix::Store &store,
std::map<std::string, std::string> &outputs) {
uint64_t downloadSize, narSize;
nix::StorePathSet willBuild, willSubstitute, unknown;
std::vector<nix::StorePathWithOutputs> paths;
for (auto const &[key, val] : outputs) {
if (val) {
paths.push_back(followLinksToStorePathWithOutputs(store, *val));
}
paths.push_back(followLinksToStorePathWithOutputs(store, val));
}
store.queryMissing(toDerivedPaths(paths), willBuild, willSubstitute,
@ -48,19 +45,9 @@ Drv::Drv(std::string &attrPath, nix::EvalState &state, nix::DrvInfo &drvInfo,
auto localStore = state.store.dynamic_pointer_cast<nix::LocalFSStore>();
try {
// CA derivations do not have static output paths, so we have to
// defensively not query output paths in case we encounter one.
for (auto &[outputName, optOutputPath] :
drvInfo.queryOutputs(!nix::experimentalFeatureSettings.isEnabled(
nix::Xp::CaDerivations))) {
if (optOutputPath) {
outputs[outputName] =
localStore->printStorePath(*optOutputPath);
} else {
assert(nix::experimentalFeatureSettings.isEnabled(
nix::Xp::CaDerivations));
outputs[outputName] = std::nullopt;
}
for (auto out : drvInfo.queryOutputs(true)) {
if (out.second)
outputs[out.first] = localStore->printStorePath(*out.second);
}
} catch (const std::exception &e) {
throw nix::EvalError(state,
@ -111,16 +98,10 @@ Drv::Drv(std::string &attrPath, nix::EvalState &state, nix::DrvInfo &drvInfo,
}
void to_json(nlohmann::json &json, const Drv &drv) {
std::map<std::string, nlohmann::json> outputsJson;
for (auto &[name, optPath] : drv.outputs) {
outputsJson[name] =
optPath ? nlohmann::json(*optPath) : nlohmann::json(nullptr);
}
json = nlohmann::json{{"name", drv.name},
{"system", drv.system},
{"drvPath", drv.drvPath},
{"outputs", outputsJson},
{"outputs", drv.outputs},
{"inputDrvs", drv.inputDrvs}};
if (drv.meta.has_value()) {

2
src/drv.hh
View file

@ -24,7 +24,7 @@ struct Drv {
std::string drvPath;
enum class CacheStatus { Cached, Uncached, Unknown } cacheStatus;
std::map<std::string, std::optional<std::string>> outputs;
std::map<std::string, std::string> outputs;
std::map<std::string, std::set<std::string>> inputDrvs;
std::optional<nlohmann::json> meta;

2
src/eval-args.hh
View file

@ -12,7 +12,7 @@
class MyArgs : virtual public nix::MixEvalArgs,
virtual public nix::MixCommonArgs,
virtual public nix::RootArgs {
virtual nix::RootArgs {
public:
std::string releaseExpr;
nix::Path gcRootsDir;

8
src/meson.build
View file

@ -1,10 +1,10 @@
src = files(
src = [
'nix-eval-jobs.cc',
'eval-args.cc',
'drv.cc',
'buffered-io.cc',
'worker.cc',
)
'worker.cc'
]
cc = meson.get_compiler('cpp')
@ -31,4 +31,4 @@ executable('nix-eval-jobs', src,
threads_dep
],
install: true,
cpp_args: ['--include', 'autotools-config.h'])
cpp_args: ['-std=c++2a', '-fvisibility=hidden', '--include', 'autotools-config.h'])

73
src/nix-eval-jobs.cc
View file

@ -8,7 +8,6 @@
#include <sys/wait.h>
#include <nlohmann/json.hpp>
#include <errno.h>
#include <pthread.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
@ -18,13 +17,13 @@
#include <lix/libutil/error.hh>
#include <lix/libstore/globals.hh>
#include <lix/libutil/logging.hh>
#include <lix/libutil/terminal.hh>
#include <nlohmann/detail/iterators/iter_impl.hpp>
#include <nlohmann/detail/json_ref.hpp>
#include <nlohmann/json_fwd.hpp>
#include <lix/libutil/ref.hh>
#include <lix/libstore/store-api.hh>
#include <map>
#include <thread>
#include <condition_variable>
#include <filesystem>
#include <exception>
@ -93,60 +92,12 @@ struct Proc {
to = std::move(toPipe.writeSide);
from = std::move(fromPipe.readSide);
pid = std::move(p);
pid = p;
}
~Proc() {}
};
// We'd highly prefer using std::thread here; but this won't let us configure the stack
// size. macOS uses 512KiB size stacks for non-main threads, and musl defaults to 128k.
// While Nix configures a 64MiB size for the main thread, this doesn't propagate to the
// threads we launch here. It turns out, running the evaluator under an anemic stack of
// 0.5MiB has it overflow way too quickly. Hence, we have our own custom Thread struct.
struct Thread {
pthread_t thread;
Thread(const Thread &) = delete;
Thread(Thread &&) noexcept = default;
Thread(std::function<void(void)> f) {
int s;
pthread_attr_t attr;
auto func = std::make_unique<std::function<void(void)>>(std::move(f));
if ((s = pthread_attr_init(&attr)) != 0) {
throw SysError(s, "calling pthread_attr_init");
}
if ((s = pthread_attr_setstacksize(&attr, 64 * 1024 * 1024)) != 0) {
throw SysError(s, "calling pthread_attr_setstacksize");
}
if ((s = pthread_create(&thread, &attr, Thread::init, func.release())) != 0) {
throw SysError(s, "calling pthread_launch");
}
if ((s = pthread_attr_destroy(&attr)) != 0) {
throw SysError(s, "calling pthread_attr_destroy");
}
}
void join() {
int s;
s = pthread_join(thread, nullptr);
if (s != 0) {
throw SysError(s, "calling pthread_join");
}
}
private:
static void *init(void *ptr) {
std::unique_ptr<std::function<void(void)>> func;
func.reset(static_cast<std::function<void(void)> *>(ptr));
(*func)();
return 0;
}
};
struct State {
std::set<json> todo = json::array({json::array()});
std::set<json> active;
@ -344,16 +295,24 @@ int main(int argc, char **argv) {
return handleExceptions(argv[0], [&]() {
initNix();
initLibExpr();
initGC();
myArgs.parseArgs(argv, argc);
/* FIXME: The build hook in conjunction with import-from-derivation is
* causing "unexpected EOF" during eval */
settings.builders = "";
/* Prevent access to paths outside of the Nix search path and
to the environment. */
evalSettings.restrictEval = false;
/* When building a flake, use pure evaluation (no access to
'getEnv', 'currentSystem' etc. */
if (myArgs.impure) {
evalSettings.pureEval.override(false);
evalSettings.pureEval = false;
} else if (myArgs.flake) {
evalSettings.pureEval.override(true);
evalSettings.pureEval = true;
}
if (myArgs.releaseExpr == "")
@ -366,16 +325,16 @@ int main(int argc, char **argv) {
}
if (myArgs.showTrace) {
loggerSettings.showTrace.override(true);
loggerSettings.showTrace.assign(true);
}
Sync<State> state_;
/* Start a collector thread per worker process. */
std::vector<Thread> threads;
std::vector<std::thread> threads;
std::condition_variable wakeup;
for (size_t i = 0; i < myArgs.nrWorkers; i++) {
threads.emplace_back(std::bind(collector, std::ref(state_), std::ref(wakeup)));
threads.emplace_back(collector, std::ref(state_), std::ref(wakeup));
}
for (auto &thread : threads)

7
src/worker.cc
View file

@ -27,15 +27,18 @@
#include <lix/libstore/store-api.hh>
#include <lix/libexpr/symbol-table.hh>
#include <lix/libutil/types.hh>
#include <lix/libutil/util.hh>
#include <lix/libexpr/value.hh>
#include <lix/libutil/terminal.hh>
#include <exception>
#include <map>
#include <memory>
#include <numeric>
#include <optional>
#include <sstream>
#include <string>
#include <string_view>
#include <utility>
#include <vector>
#include "worker.hh"
#include "drv.hh"
@ -48,7 +51,7 @@ static nix::Value *releaseExprTopLevelValue(nix::EvalState &state,
nix::Value vTop;
if (args.fromArgs) {
nix::Expr &e = state.parseExprFromString(
nix::Expr *e = state.parseExprFromString(
args.releaseExpr, state.rootPath(nix::CanonPath::fromCwd()));
state.eval(e, vTop);
} else {