From d127f9bd0e7b9b2e0df2de8a2227f77c0907468d Mon Sep 17 00:00:00 2001 From: Vincent Ambo Date: Wed, 18 May 2022 17:39:39 +0200 Subject: chore(3p/nix): unvendor tvix 0.1 Nothing is using this now, and we'll likely never pick this up again, but we learned a lot in the process. Every now and then this breaks in some bizarre way on channel bumps and it's just a waste of time to maintain that. Change-Id: Idcf2f5acd4ca7070ce18d7149cbfc0d967dc0a44 Reviewed-on: https://cl.tvl.fyi/c/depot/+/5632 Tested-by: BuildkiteCI Reviewed-by: sterni Reviewed-by: lukegb Autosubmit: tazjin --- third_party/nix/src/libexpr/primops/fetchGit.cc | 277 ------------------------ 1 file changed, 277 deletions(-) delete mode 100644 third_party/nix/src/libexpr/primops/fetchGit.cc (limited to 'third_party/nix/src/libexpr/primops/fetchGit.cc') diff --git a/third_party/nix/src/libexpr/primops/fetchGit.cc b/third_party/nix/src/libexpr/primops/fetchGit.cc deleted file mode 100644 index da4d683401..0000000000 --- a/third_party/nix/src/libexpr/primops/fetchGit.cc +++ /dev/null @@ -1,277 +0,0 @@ -#include -#include - -#include -#include -#include -#include -#include - -#include "libexpr/eval-inline.hh" -#include "libexpr/primops.hh" -#include "libstore/download.hh" -#include "libstore/pathlocks.hh" -#include "libstore/store-api.hh" -#include "libutil/hash.hh" - -using namespace std::string_literals; - -namespace nix { - -struct GitInfo { - Path storePath; - std::string rev; - std::string shortRev; - uint64_t revCount = 0; -}; - -std::regex revRegex("^[0-9a-fA-F]{40}$"); - -GitInfo exportGit(ref store, const std::string& uri, - std::optional ref, std::string rev, - const std::string& name) { - if (evalSettings.pureEval && rev == "") { - throw Error("in pure evaluation mode, 'fetchGit' requires a Git revision"); - } - - if (!ref && rev == "" && absl::StartsWith(uri, "/") && - pathExists(uri + "/.git")) { - bool clean = true; - - try { - runProgram("git", true, - {"-C", uri, "diff-index", "--quiet", "HEAD", "--"}); - } catch (ExecError& e) { - if (!WIFEXITED(e.status) || WEXITSTATUS(e.status) != 1) { - throw; - } - clean = false; - } - - if (!clean) { - /* This is an unclean working tree. So copy all tracked - files. */ - - GitInfo gitInfo; - gitInfo.rev = "0000000000000000000000000000000000000000"; - gitInfo.shortRev = std::string(gitInfo.rev, 0, 7); - - std::set files = - absl::StrSplit(runProgram("git", true, {"-C", uri, "ls-files", "-z"}), - absl::ByChar('\0'), absl::SkipEmpty()); - - PathFilter filter = [&](const Path& p) -> bool { - assert(absl::StartsWith(p, uri)); - std::string file(p, uri.size() + 1); - - auto st = lstat(p); - - if (S_ISDIR(st.st_mode)) { - auto prefix = file + "/"; - auto i = files.lower_bound(prefix); - return i != files.end() && absl::StartsWith(*i, prefix); - } - - return files.count(file); - }; - - gitInfo.storePath = - store->addToStore("source", uri, true, htSHA256, filter); - - return gitInfo; - } - - // clean working tree, but no ref or rev specified. Use 'HEAD'. - rev = absl::StripTrailingAsciiWhitespace( - runProgram("git", true, {"-C", uri, "rev-parse", "HEAD"})); - ref = "HEAD"s; - } - - if (!ref) { - ref = "HEAD"s; - } - - if (rev != "" && !std::regex_match(rev, revRegex)) { - throw Error("invalid Git revision '%s'", rev); - } - - deletePath(getCacheDir() + "/nix/git"); - - Path cacheDir = getCacheDir() + "/nix/gitv2/" + - hashString(htSHA256, uri).to_string(Base32, false); - - if (!pathExists(cacheDir)) { - createDirs(dirOf(cacheDir)); - runProgram("git", true, {"init", "--bare", cacheDir}); - } - - Path localRefFile; - if (ref->compare(0, 5, "refs/") == 0) { - localRefFile = cacheDir + "/" + *ref; - } else { - localRefFile = cacheDir + "/refs/heads/" + *ref; - } - - bool doFetch; - time_t now = time(0); - /* If a rev was specified, we need to fetch if it's not in the - repo. */ - if (rev != "") { - try { - runProgram("git", true, {"-C", cacheDir, "cat-file", "-e", rev}); - doFetch = false; - } catch (ExecError& e) { - if (WIFEXITED(e.status)) { - doFetch = true; - } else { - throw; - } - } - } else { - /* If the local ref is older than ‘tarball-ttl’ seconds, do a - git fetch to update the local ref to the remote ref. */ - struct stat st; - doFetch = stat(localRefFile.c_str(), &st) != 0 || - static_cast(st.st_mtime) + settings.tarballTtl <= - static_cast(now); - } - if (doFetch) { - DLOG(INFO) << "fetching Git repository '" << uri << "'"; - - // FIXME: git stderr messes up our progress indicator, so - // we're using --quiet for now. Should process its stderr. - runProgram("git", true, - {"-C", cacheDir, "fetch", "--quiet", "--force", "--", uri, - fmt("%s:%s", *ref, *ref)}); - - struct timeval times[2]; - times[0].tv_sec = now; - times[0].tv_usec = 0; - times[1].tv_sec = now; - times[1].tv_usec = 0; - - utimes(localRefFile.c_str(), times); - } - - // FIXME: check whether rev is an ancestor of ref. - GitInfo gitInfo; - gitInfo.rev = - rev != "" ? rev - : absl::StripTrailingAsciiWhitespace(readFile(localRefFile)); - gitInfo.shortRev = std::string(gitInfo.rev, 0, 7); - - VLOG(2) << "using revision " << gitInfo.rev << " of repo '" << uri << "'"; - - std::string storeLinkName = - hashString(htSHA512, name + std::string("\0"s) + gitInfo.rev) - .to_string(Base32, false); - Path storeLink = cacheDir + "/" + storeLinkName + ".link"; - PathLocks storeLinkLock({storeLink}, fmt("waiting for lock on '%1%'...", - storeLink)); // FIXME: broken - - try { - auto json = nlohmann::json::parse(readFile(storeLink)); - - assert(json["name"] == name && json["rev"] == gitInfo.rev); - - gitInfo.storePath = json["storePath"]; - - if (store->isValidPath(gitInfo.storePath)) { - gitInfo.revCount = json["revCount"]; - return gitInfo; - } - - } catch (SysError& e) { - if (e.errNo != ENOENT) { - throw; - } - } - - // FIXME: should pipe this, or find some better way to extract a - // revision. - auto tar = runProgram("git", true, {"-C", cacheDir, "archive", gitInfo.rev}); - - Path tmpDir = createTempDir(); - AutoDelete delTmpDir(tmpDir, true); - - runProgram("tar", true, {"x", "-C", tmpDir}, tar); - - gitInfo.storePath = store->addToStore(name, tmpDir); - - gitInfo.revCount = std::stoull(runProgram( - "git", true, {"-C", cacheDir, "rev-list", "--count", gitInfo.rev})); - - nlohmann::json json; - json["storePath"] = gitInfo.storePath; - json["uri"] = uri; - json["name"] = name; - json["rev"] = gitInfo.rev; - json["revCount"] = gitInfo.revCount; - - writeFile(storeLink, json.dump()); - - return gitInfo; -} - -static void prim_fetchGit(EvalState& state, const Pos& pos, Value** args, - Value& v) { - std::string url; - std::optional ref; - std::string rev; - std::string name = "source"; - PathSet context; - - state.forceValue(*args[0]); - - if (args[0]->type == tAttrs) { - state.forceAttrs(*args[0], pos); - - for (auto& attr_iter : *args[0]->attrs) { - auto& attr = attr_iter.second; - std::string n(attr.name); - if (n == "url") { - url = - state.coerceToString(*attr.pos, *attr.value, context, false, false); - } else if (n == "ref") { - ref = state.forceStringNoCtx(*attr.value, *attr.pos); - } else if (n == "rev") { - rev = state.forceStringNoCtx(*attr.value, *attr.pos); - } else if (n == "name") { - name = state.forceStringNoCtx(*attr.value, *attr.pos); - } else { - throw EvalError("unsupported argument '%s' to 'fetchGit', at %s", - attr.name, *attr.pos); - } - } - - if (url.empty()) { - throw EvalError(format("'url' argument required, at %1%") % pos); - } - - } else { - url = state.coerceToString(pos, *args[0], context, false, false); - } - - // FIXME: git externals probably can be used to bypass the URI - // whitelist. Ah well. - state.checkURI(url); - - auto gitInfo = exportGit(state.store, url, ref, rev, name); - - state.mkAttrs(v, 8); - mkString(*state.allocAttr(v, state.sOutPath), gitInfo.storePath, - PathSet({gitInfo.storePath})); - mkString(*state.allocAttr(v, state.symbols.Create("rev")), gitInfo.rev); - mkString(*state.allocAttr(v, state.symbols.Create("shortRev")), - gitInfo.shortRev); - mkInt(*state.allocAttr(v, state.symbols.Create("revCount")), - gitInfo.revCount); - - if (state.allowedPaths) { - state.allowedPaths->insert(state.store->toRealPath(gitInfo.storePath)); - } -} - -static RegisterPrimOp r("fetchGit", 1, prim_fetchGit); - -} // namespace nix -- cgit 1.4.1