Remove stray added file

1 files changed, 0 insertions, 1787 deletions

diff --git a/local-store-temp.cc b/local-store-temp.cc
deleted file mode 100644
index be6e081cb..000000000
--- a/local-store-temp.cc
+++ /dev/null
@@ -1,1787 +0,0 @@
-#include "local-store.hh"
-#include "globals.hh"
-#include "git.hh"
-#include "archive.hh"
-#include "pathlocks.hh"
-#include "worker-protocol.hh"
-#include "derivations.hh"
-#include "nar-info.hh"
-#include "references.hh"
-
-#include <iostream>
-#include <algorithm>
-#include <cstring>
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/select.h>
-#include <sys/time.h>
-#include <unistd.h>
-#include <utime.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <stdio.h>
-#include <time.h>
-#include <grp.h>
-
-#if __linux__
-#include <sched.h>
-#include <sys/statvfs.h>
-#include <sys/mount.h>
-#include <sys/ioctl.h>
-#include <sys/xattr.h>
-#endif
-
-#ifdef __CYGWIN__
-#include <windows.h>
-#endif
-
-#include <sqlite3.h>
-
-
-namespace nix {
-
-
-LocalStore::LocalStore(const Params & params)
-    : Store(params)
-    , LocalFSStore(params)
-    , realStoreDir_{this, false, rootDir != "" ? rootDir + "/nix/store" : storeDir, "real",
-        "physical path to the Nix store"}
-    , realStoreDir(realStoreDir_)
-    , dbDir(stateDir + "/db")
-    , linksDir(realStoreDir + "/.links")
-    , reservedPath(dbDir + "/reserved")
-    , schemaPath(dbDir + "/schema")
-    , trashDir(realStoreDir + "/trash")
-    , tempRootsDir(stateDir + "/temproots")
-    , fnTempRoots(fmt("%s/%d", tempRootsDir, getpid()))
-    , locksHeld(tokenizeString<PathSet>(getEnv("NIX_HELD_LOCKS").value_or("")))
-{
-    auto state(_state.lock());
-
-    /* Create missing state directories if they don't already exist. */
-    createDirs(realStoreDir);
-    makeStoreWritable();
-    createDirs(linksDir);
-    Path profilesDir = stateDir + "/profiles";
-    createDirs(profilesDir);
-    createDirs(tempRootsDir);
-    createDirs(dbDir);
-    Path gcRootsDir = stateDir + "/gcroots";
-    if (!pathExists(gcRootsDir)) {
-        createDirs(gcRootsDir);
-        createSymlink(profilesDir, gcRootsDir + "/profiles");
-    }
-
-    for (auto & perUserDir : {profilesDir + "/per-user", gcRootsDir + "/per-user"}) {
-        createDirs(perUserDir);
-        if (chmod(perUserDir.c_str(), 0755) == -1)
-            throw SysError("could not set permissions on '%s' to 755", perUserDir);
-    }
-
-    createUser(getUserName(), getuid());
-
-    /* Optionally, create directories and set permissions for a
-       multi-user install. */
-    if (getuid() == 0 && settings.buildUsersGroup != "") {
-        mode_t perm = 01775;
-
-        struct group * gr = getgrnam(settings.buildUsersGroup.get().c_str());
-        if (!gr)
-            logError({
-                .name = "'build-users-group' not found",
-                .hint = hintfmt(
-                    "warning: the group '%1%' specified in 'build-users-group' does not exist",
-                    settings.buildUsersGroup)
-            });
-        else {
-            struct stat st;
-            if (stat(realStoreDir.c_str(), &st))
-                throw SysError("getting attributes of path '%1%'", realStoreDir);
-
-            if (st.st_uid != 0 || st.st_gid != gr->gr_gid || (st.st_mode & ~S_IFMT) != perm) {
-                if (chown(realStoreDir.c_str(), 0, gr->gr_gid) == -1)
-                    throw SysError("changing ownership of path '%1%'", realStoreDir);
-                if (chmod(realStoreDir.c_str(), perm) == -1)
-                    throw SysError("changing permissions on path '%1%'", realStoreDir);
-            }
-        }
-    }
-
-    /* Ensure that the store and its parents are not symlinks. */
-    if (getEnv("NIX_IGNORE_SYMLINK_STORE") != "1") {
-        Path path = realStoreDir;
-        struct stat st;
-        while (path != "/") {
-            if (lstat(path.c_str(), &st))
-                throw SysError("getting status of '%1%'", path);
-            if (S_ISLNK(st.st_mode))
-                throw Error(
-                        "the path '%1%' is a symlink; "
-                        "this is not allowed for the Nix store and its parent directories",
-                        path);
-            path = dirOf(path);
-        }
-    }
-
-    /* We can't open a SQLite database if the disk is full.  Since
-       this prevents the garbage collector from running when it's most
-       needed, we reserve some dummy space that we can free just
-       before doing a garbage collection. */
-    try {
-        struct stat st;
-        if (stat(reservedPath.c_str(), &st) == -1 ||
-            st.st_size != settings.reservedSize)
-        {
-            AutoCloseFD fd = open(reservedPath.c_str(), O_WRONLY | O_CREAT | O_CLOEXEC, 0600);
-            int res = -1;
-#if HAVE_POSIX_FALLOCATE
-            res = posix_fallocate(fd.get(), 0, settings.reservedSize);
-#endif
-            if (res == -1) {
-                writeFull(fd.get(), string(settings.reservedSize, 'X'));
-                [[gnu::unused]] auto res2 = ftruncate(fd.get(), settings.reservedSize);
-            }
-        }
-    } catch (SysError & e) { /* don't care about errors */
-    }
-
-    /* Acquire the big fat lock in shared mode to make sure that no
-       schema upgrade is in progress. */
-    Path globalLockPath = dbDir + "/big-lock";
-    globalLock = openLockFile(globalLockPath.c_str(), true);
-
-    if (!lockFile(globalLock.get(), ltRead, false)) {
-        printInfo("waiting for the big Nix store lock...");
-        lockFile(globalLock.get(), ltRead, true);
-    }
-
-    /* Check the current database schema and if necessary do an
-       upgrade.  */
-    int curSchema = getSchema();
-    if (curSchema > nixSchemaVersion)
-        throw Error("current Nix store schema is version %1%, but I only support %2%",
-             curSchema, nixSchemaVersion);
-
-    else if (curSchema == 0) { /* new store */
-        curSchema = nixSchemaVersion;
-        openDB(*state, true);
-        writeFile(schemaPath, (format("%1%") % nixSchemaVersion).str());
-    }
-
-    else if (curSchema < nixSchemaVersion) {
-        if (curSchema < 5)
-            throw Error(
-                "Your Nix store has a database in Berkeley DB format,\n"
-                "which is no longer supported. To convert to the new format,\n"
-                "please upgrade Nix to version 0.12 first.");
-
-        if (curSchema < 6)
-            throw Error(
-                "Your Nix store has a database in flat file format,\n"
-                "which is no longer supported. To convert to the new format,\n"
-                "please upgrade Nix to version 1.11 first.");
-
-        if (!lockFile(globalLock.get(), ltWrite, false)) {
-            printInfo("waiting for exclusive access to the Nix store...");
-            lockFile(globalLock.get(), ltWrite, true);
-        }
-
-        /* Get the schema version again, because another process may
-           have performed the upgrade already. */
-        curSchema = getSchema();
-
-        if (curSchema < 7) { upgradeStore7(); }
-
-        openDB(*state, false);
-
-        if (curSchema < 8) {
-            SQLiteTxn txn(state->db);
-            state->db.exec("alter table ValidPaths add column ultimate integer");
-            state->db.exec("alter table ValidPaths add column sigs text");
-            txn.commit();
-        }
-
-        if (curSchema < 9) {
-            SQLiteTxn txn(state->db);
-            state->db.exec("drop table FailedPaths");
-            txn.commit();
-        }
-
-        if (curSchema < 10) {
-            SQLiteTxn txn(state->db);
-            state->db.exec("alter table ValidPaths add column ca text");
-            txn.commit();
-        }
-
-        writeFile(schemaPath, (format("%1%") % nixSchemaVersion).str());
-
-        lockFile(globalLock.get(), ltRead, true);
-    }
-
-    else openDB(*state, false);
-
-    /* Prepare SQL statements. */
-    state->stmtRegisterValidPath.create(state->db,
-        "insert into ValidPaths (path, hash, registrationTime, deriver, narSize, ultimate, sigs, ca) values (?, ?, ?, ?, ?, ?, ?, ?);");
-    state->stmtUpdatePathInfo.create(state->db,
-        "update ValidPaths set narSize = ?, hash = ?, ultimate = ?, sigs = ?, ca = ? where path = ?;");
-    state->stmtAddReference.create(state->db,
-        "insert or replace into Refs (referrer, reference) values (?, ?);");
-    state->stmtQueryPathInfo.create(state->db,
-        "select id, hash, registrationTime, deriver, narSize, ultimate, sigs, ca from ValidPaths where path = ?;");
-    state->stmtQueryReferences.create(state->db,
-        "select path from Refs join ValidPaths on reference = id where referrer = ?;");
-    state->stmtQueryReferrers.create(state->db,
-        "select path from Refs join ValidPaths on referrer = id where reference = (select id from ValidPaths where path = ?);");
-    state->stmtInvalidatePath.create(state->db,
-        "delete from ValidPaths where path = ?;");
-    state->stmtAddDerivationOutput.create(state->db,
-        "insert or replace into DerivationOutputs (drv, id, path) values (?, ?, ?);");
-    state->stmtQueryValidDerivers.create(state->db,
-        "select v.id, v.path from DerivationOutputs d join ValidPaths v on d.drv = v.id where d.path = ?;");
-    state->stmtQueryDerivationOutputs.create(state->db,
-        "select id, path from DerivationOutputs where drv = ?;");
-    // Use "path >= ?" with limit 1 rather than "path like '?%'" to
-    // ensure efficient lookup.
-    state->stmtQueryPathFromHashPart.create(state->db,
-        "select path from ValidPaths where path >= ? limit 1;");
-    state->stmtQueryValidPaths.create(state->db, "select path from ValidPaths");
-}
-
-
-LocalStore::~LocalStore()
-{
-    std::shared_future<void> future;
-
-    {
-        auto state(_state.lock());
-        if (state->gcRunning)
-            future = state->gcFuture;
-    }
-
-    if (future.valid()) {
-        printInfo("waiting for auto-GC to finish on exit...");
-        future.get();
-    }
-
-    try {
-        auto state(_state.lock());
-        if (state->fdTempRoots) {
-            state->fdTempRoots = -1;
-            unlink(fnTempRoots.c_str());
-        }
-    } catch (...) {
-        ignoreException();
-    }
-}
-
-
-std::string LocalStore::getUri()
-{
-    return "local";
-}
-
-
-int LocalStore::getSchema()
-{
-    int curSchema = 0;
-    if (pathExists(schemaPath)) {
-        string s = readFile(schemaPath);
-        if (!string2Int(s, curSchema))
-            throw Error("'%1%' is corrupt", schemaPath);
-    }
-    return curSchema;
-}
-
-
-void LocalStore::openDB(State & state, bool create)
-{
-    if (access(dbDir.c_str(), R_OK | W_OK))
-        throw SysError("Nix database directory '%1%' is not writable", dbDir);
-
-    /* Open the Nix database. */
-    string dbPath = dbDir + "/db.sqlite";
-    auto & db(state.db);
-    state.db = SQLite(dbPath, create);
-
-#ifdef __CYGWIN__
-    /* The cygwin version of sqlite3 has a patch which calls
-       SetDllDirectory("/usr/bin") on init. It was intended to fix extension
-       loading, which we don't use, and the effect of SetDllDirectory is
-       inherited by child processes, and causes libraries to be loaded from
-       /usr/bin instead of $PATH. This breaks quite a few things (e.g.
-       checkPhase on openssh), so we set it back to default behaviour. */
-    SetDllDirectoryW(L"");
-#endif
-
-    /* !!! check whether sqlite has been built with foreign key
-       support */
-
-    /* Whether SQLite should fsync().  "Normal" synchronous mode
-       should be safe enough.  If the user asks for it, don't sync at
-       all.  This can cause database corruption if the system
-       crashes. */
-    string syncMode = settings.fsyncMetadata ? "normal" : "off";
-    db.exec("pragma synchronous = " + syncMode);
-
-    /* Set the SQLite journal mode.  WAL mode is fastest, so it's the
-       default. */
-    string mode = settings.useSQLiteWAL ? "wal" : "truncate";
-    string prevMode;
-    {
-        SQLiteStmt stmt;
-        stmt.create(db, "pragma main.journal_mode;");
-        if (sqlite3_step(stmt) != SQLITE_ROW)
-            throwSQLiteError(db, "querying journal mode");
-        prevMode = string((const char *) sqlite3_column_text(stmt, 0));
-    }
-    if (prevMode != mode &&
-        sqlite3_exec(db, ("pragma main.journal_mode = " + mode + ";").c_str(), 0, 0, 0) != SQLITE_OK)
-        throwSQLiteError(db, "setting journal mode");
-
-    /* Increase the auto-checkpoint interval to 40000 pages.  This
-       seems enough to ensure that instantiating the NixOS system
-       derivation is done in a single fsync(). */
-    if (mode == "wal" && sqlite3_exec(db, "pragma wal_autocheckpoint = 40000;", 0, 0, 0) != SQLITE_OK)
-        throwSQLiteError(db, "setting autocheckpoint interval");
-
-    /* Initialise the database schema, if necessary. */
-    if (create) {
-        static const char schema[] =
-#include "schema.sql.gen.hh"
-            ;
-        db.exec(schema);
-    }
-}
-
-
-/* To improve purity, users may want to make the Nix store a read-only
-   bind mount.  So make the Nix store writable for this process. */
-void LocalStore::makeStoreWritable()
-{
-#if __linux__
-    if (getuid() != 0) return;
-    /* Check if /nix/store is on a read-only mount. */
-    struct statvfs stat;
-    if (statvfs(realStoreDir.c_str(), &stat) != 0)
-        throw SysError("getting info about the Nix store mount point");
-
-    if (stat.f_flag & ST_RDONLY) {
-        if (unshare(CLONE_NEWNS) == -1)
-            throw SysError("setting up a private mount namespace");
-
-        if (mount(0, realStoreDir.c_str(), "none", MS_REMOUNT | MS_BIND, 0) == -1)
-            throw SysError("remounting %1% writable", realStoreDir);
-    }
-#endif
-}
-
-
-const time_t mtimeStore = 1; /* 1 second into the epoch */
-
-
-static void canonicaliseTimestampAndPermissions(const Path & path, const struct stat & st)
-{
-    if (!S_ISLNK(st.st_mode)) {
-
-        /* Mask out all type related bits. */
-        mode_t mode = st.st_mode & ~S_IFMT;
-
-        if (mode != 0444 && mode != 0555) {
-            mode = (st.st_mode & S_IFMT)
-                 | 0444
-                 | (st.st_mode & S_IXUSR ? 0111 : 0);
-            if (chmod(path.c_str(), mode) == -1)
-                throw SysError("changing mode of '%1%' to %2$o", path, mode);
-        }
-
-    }
-
-    if (st.st_mtime != mtimeStore) {
-        struct timeval times[2];
-        times[0].tv_sec = st.st_atime;
-        times[0].tv_usec = 0;
-        times[1].tv_sec = mtimeStore;
-        times[1].tv_usec = 0;
-#if HAVE_LUTIMES
-        if (lutimes(path.c_str(), times) == -1)
-            if (errno != ENOSYS ||
-                (!S_ISLNK(st.st_mode) && utimes(path.c_str(), times) == -1))
-#else
-        if (!S_ISLNK(st.st_mode) && utimes(path.c_str(), times) == -1)
-#endif
-            throw SysError("changing modification time of '%1%'", path);
-    }
-}
-
-
-void canonicaliseTimestampAndPermissions(const Path & path)
-{
-    struct stat st;
-    if (lstat(path.c_str(), &st))
-        throw SysError("getting attributes of path '%1%'", path);
-    canonicaliseTimestampAndPermissions(path, st);
-}
-
-
-static void canonicalisePathMetaData_(const Path & path, uid_t fromUid, InodesSeen & inodesSeen)
-{
-    checkInterrupt();
-
-#if __APPLE__
-    /* Remove flags, in particular UF_IMMUTABLE which would prevent
-       the file from being garbage-collected. FIXME: Use
-       setattrlist() to remove other attributes as well. */
-    if (lchflags(path.c_str(), 0)) {
-        if (errno != ENOTSUP)
-            throw SysError("clearing flags of path '%1%'", path);
-    }
-#endif
-
-    struct stat st;
-    if (lstat(path.c_str(), &st))
-        throw SysError("getting attributes of path '%1%'", path);
-
-    /* Really make sure that the path is of a supported type. */
-    if (!(S_ISREG(st.st_mode) || S_ISDIR(st.st_mode) || S_ISLNK(st.st_mode)))
-        throw Error("file '%1%' has an unsupported type", path);
-
-#if __linux__
-    /* Remove extended attributes / ACLs. */
-    ssize_t eaSize = llistxattr(path.c_str(), nullptr, 0);
-
-    if (eaSize < 0) {
-        if (errno != ENOTSUP && errno != ENODATA)
-            throw SysError("querying extended attributes of '%s'", path);
-    } else if (eaSize > 0) {
-        std::vector<char> eaBuf(eaSize);
-
-        if ((eaSize = llistxattr(path.c_str(), eaBuf.data(), eaBuf.size())) < 0)
-            throw SysError("querying extended attributes of '%s'", path);
-
-        for (auto & eaName: tokenizeString<Strings>(std::string(eaBuf.data(), eaSize), std::string("\000", 1))) {
-            /* Ignore SELinux security labels since these cannot be
-               removed even by root. */
-            if (eaName == "security.selinux") continue;
-            if (lremovexattr(path.c_str(), eaName.c_str()) == -1)
-                throw SysError("removing extended attribute '%s' from '%s'", eaName, path);
-        }
-     }
-#endif
-
-    /* Fail if the file is not owned by the build user.  This prevents
-       us from messing up the ownership/permissions of files
-       hard-linked into the output (e.g. "ln /etc/shadow $out/foo").
-       However, ignore files that we chown'ed ourselves previously to
-       ensure that we don't fail on hard links within the same build
-       (i.e. "touch $out/foo; ln $out/foo $out/bar"). */
-    if (fromUid != (uid_t) -1 && st.st_uid != fromUid) {
-        assert(!S_ISDIR(st.st_mode));
-        if (inodesSeen.find(Inode(st.st_dev, st.st_ino)) == inodesSeen.end())
-            throw BuildError("invalid ownership on file '%1%'", path);
-        mode_t mode = st.st_mode & ~S_IFMT;
-        assert(S_ISLNK(st.st_mode) || (st.st_uid == geteuid() && (mode == 0444 || mode == 0555) && st.st_mtime == mtimeStore));
-        return;
-    }
-
-    inodesSeen.insert(Inode(st.st_dev, st.st_ino));
-
-    canonicaliseTimestampAndPermissions(path, st);
-
-    /* Change ownership to the current uid.  If it's a symlink, use
-       lchown if available, otherwise don't bother.  Wrong ownership
-       of a symlink doesn't matter, since the owning user can't change
-       the symlink and can't delete it because the directory is not
-       writable.  The only exception is top-level paths in the Nix
-       store (since that directory is group-writable for the Nix build
-       users group); we check for this case below. */
-    if (st.st_uid != geteuid()) {
-#if HAVE_LCHOWN
-        if (lchown(path.c_str(), geteuid(), getegid()) == -1)
-#else
-        if (!S_ISLNK(st.st_mode) &&
-            chown(path.c_str(), geteuid(), getegid()) == -1)
-#endif
-            throw SysError("changing owner of '%1%' to %2%",
-                path, geteuid());
-    }
-
-    if (S_ISDIR(st.st_mode)) {
-        DirEntries entries = readDirectory(path);
-        for (auto & i : entries)
-            canonicalisePathMetaData_(path + "/" + i.name, fromUid, inodesSeen);
-    }
-}
-
-
-void canonicalisePathMetaData(const Path & path, uid_t fromUid, InodesSeen & inodesSeen)
-{
-    canonicalisePathMetaData_(path, fromUid, inodesSeen);
-
-    /* On platforms that don't have lchown(), the top-level path can't
-       be a symlink, since we can't change its ownership. */
-    struct stat st;
-    if (lstat(path.c_str(), &st))
-        throw SysError("getting attributes of path '%1%'", path);
-
-    if (st.st_uid != geteuid()) {
-        assert(S_ISLNK(st.st_mode));
-        throw Error("wrong ownership of top-level store path '%1%'", path);
-    }
-}
-
-
-void canonicalisePathMetaData(const Path & path, uid_t fromUid)
-{
-    InodesSeen inodesSeen;
-    canonicalisePathMetaData(path, fromUid, inodesSeen);
-}
-
-
-void LocalStore::checkDerivationOutputs(const StorePath & drvPath, const Derivation & drv)
-{
-    assert(drvPath.isDerivation());
-    std::string drvName(drvPath.name());
-    drvName = string(drvName, 0, drvName.size() - drvExtension.size());
-
-    auto check = [&](const StorePath & expected, const StorePath & actual, const std::string & varName)
-    {
-        if (actual != expected)
-            throw Error("derivation '%s' has incorrect output '%s', should be '%s'",
-                printStorePath(drvPath), printStorePath(actual), printStorePath(expected));
-        auto j = drv.env.find(varName);
-        if (j == drv.env.end() || parseStorePath(j->second) != actual)
-            throw Error("derivation '%s' has incorrect environment variable '%s', should be '%s'",
-                printStorePath(drvPath), varName, printStorePath(actual));
-    };
-
-
-    if (drv.isFixedOutput()) {
-        DerivationOutputs::const_iterator out = drv.outputs.find("out");
-        if (out == drv.outputs.end())
-            throw Error("derivation '%s' does not have an output named 'out'", printStorePath(drvPath));
-
-        check(
-            makeFixedOutputPath(
-                out->second.hash->method,
-                out->second.hash->hash,
-                drvName),
-            out->second.path, "out");
-    }
-
-    else {
-        Hash h = hashDerivationModulo(*this, drv, true);
-        for (auto & i : drv.outputs)
-            check(makeOutputPath(i.first, h, drvName), i.second.path, i.first);
-    }
-}
-
-
-uint64_t LocalStore::addValidPath(State & state,
-    const ValidPathInfo & info, bool checkOutputs)
-{
-    if (info.ca.has_value() && !info.isContentAddressed(*this))
-        throw Error("cannot add path '%s' to the Nix store because it claims to be content-addressed but isn't",
-            printStorePath(info.path));
-
-    state.stmtRegisterValidPath.use()
-        (printStorePath(info.path))
-        (info.narHash.to_string(Base16, true))
-        (info.registrationTime == 0 ? time(0) : info.registrationTime)
-        (info.deriver ? printStorePath(*info.deriver) : "", (bool) info.deriver)
-        (info.narSize, info.narSize != 0)
-        (info.ultimate ? 1 : 0, info.ultimate)
-        (concatStringsSep(" ", info.sigs), !info.sigs.empty())
-        (renderContentAddress(info.ca), (bool) info.ca)
-        .exec();
-    uint64_t id = sqlite3_last_insert_rowid(state.db);
-
-    /* If this is a derivation, then store the derivation outputs in
-       the database.  This is useful for the garbage collector: it can
-       efficiently query whether a path is an output of some
-       derivation. */
-    if (info.path.isDerivation()) {
-        auto drv = readDerivation(info.path);
-
-        /* Verify that the output paths in the derivation are correct
-           (i.e., follow the scheme for computing output paths from
-           derivations).  Note that if this throws an error, then the
-           DB transaction is rolled back, so the path validity
-           registration above is undone. */
-        if (checkOutputs) checkDerivationOutputs(info.path, drv);
-
-        for (auto & i : drv.outputs) {
-            state.stmtAddDerivationOutput.use()
-                (id)
-                (i.first)
-                (printStorePath(i.second.path))
-                .exec();
-        }
-    }
-
-    {
-        auto state_(Store::state.lock());
-        state_->pathInfoCache.upsert(std::string(info.path.hashPart()),
-            PathInfoCacheValue{ .value = std::make_shared<const ValidPathInfo>(info) });
-    }
-
-    return id;
-}
-
-
-void LocalStore::queryPathInfoUncached(const StorePath & path,
-    Callback<std::shared_ptr<const ValidPathInfo>> callback) noexcept
-{
-    try {
-        auto info = std::make_shared<ValidPathInfo>(path);
-
-        callback(retrySQLite<std::shared_ptr<ValidPathInfo>>([&]() {
-            auto state(_state.lock());
-
-            /* Get the path info. */
-            auto useQueryPathInfo(state->stmtQueryPathInfo.use()(printStorePath(info->path)));
-
-            if (!useQueryPathInfo.next())
-                return std::shared_ptr<ValidPathInfo>();
-
-            info->id = useQueryPathInfo.getInt(0);
-
-            try {
-                info->narHash = Hash(useQueryPathInfo.getStr(1));
-            } catch (BadHash & e) {
-                throw Error("in valid-path entry for '%s': %s", printStorePath(path), e.what());
-            }
-
-            info->registrationTime = useQueryPathInfo.getInt(2);
-
-            auto s = (const char *) sqlite3_column_text(state->stmtQueryPathInfo, 3);
-            if (s) info->deriver = parseStorePath(s);
-
-            /* Note that narSize = NULL yields 0. */
-            info->narSize = useQueryPathInfo.getInt(4);
-
-            info->ultimate = useQueryPathInfo.getInt(5) == 1;
-
-            s = (const char *) sqlite3_column_text(state->stmtQueryPathInfo, 6);
-            if (s) info->sigs = tokenizeString<StringSet>(s, " ");
-
-            s = (const char *) sqlite3_column_text(state->stmtQueryPathInfo, 7);
-            if (s) info->ca = parseContentAddressOpt(s);
-
-            /* Get the references. */
-            auto useQueryReferences(state->stmtQueryReferences.use()(info->id));
-
-            while (useQueryReferences.next())
-                info->references.insert(parseStorePath(useQueryReferences.getStr(0)));
-
-            return info;
-        }));
-
-    } catch (...) { callback.rethrow(); }
-}
-
-
-/* Update path info in the database. */
-void LocalStore::updatePathInfo(State & state, const ValidPathInfo & info)
-{
-    state.stmtUpdatePathInfo.use()
-        (info.narSize, info.narSize != 0)
-        (info.narHash.to_string(Base16, true))
-        (info.ultimate ? 1 : 0, info.ultimate)
-        (concatStringsSep(" ", info.sigs), !info.sigs.empty())
-        (renderContentAddress(info.ca), (bool) info.ca)
-        (printStorePath(info.path))
-        .exec();
-}
-
-
-uint64_t LocalStore::queryValidPathId(State & state, const StorePath & path)
-{
-    auto use(state.stmtQueryPathInfo.use()(printStorePath(path)));
-    if (!use.next())
-        throw Error("path '%s' is not valid", printStorePath(path));
-    return use.getInt(0);
-}
-
-
-bool LocalStore::isValidPath_(State & state, const StorePath & path)
-{
-    return state.stmtQueryPathInfo.use()(printStorePath(path)).next();
-}
-
-
-bool LocalStore::isValidPathUncached(const StorePath & path)
-{
-    return retrySQLite<bool>([&]() {
-        auto state(_state.lock());
-        return isValidPath_(*state, path);
-    });
-}
-
-
-StorePathSet LocalStore::queryValidPaths(const StorePathSet & paths, SubstituteFlag maybeSubstitute)
-{
-    StorePathSet res;
-    for (auto & i : paths)
-        if (isValidPath(i)) res.insert(i);
-    return res;
-}
-
-
-StorePathSet LocalStore::queryAllValidPaths()
-{
-    return retrySQLite<StorePathSet>([&]() {
-        auto state(_state.lock());
-        auto use(state->stmtQueryValidPaths.use());
-        StorePathSet res;
-        while (use.next()) res.insert(parseStorePath(use.getStr(0)));
-        return res;
-    });
-}
-
-
-void LocalStore::queryReferrers(State & state, const StorePath & path, StorePathSet & referrers)
-{
-    auto useQueryReferrers(state.stmtQueryReferrers.use()(printStorePath(path)));
-
-    while (useQueryReferrers.next())
-        referrers.insert(parseStorePath(useQueryReferrers.getStr(0)));
-}
-
-
-void LocalStore::queryReferrers(const StorePath & path, StorePathSet & referrers)
-{
-    return retrySQLite<void>([&]() {
-        auto state(_state.lock());
-        queryReferrers(*state, path, referrers);
-    });
-}
-
-
-StorePathSet LocalStore::queryValidDerivers(const StorePath & path)
-{
-    return retrySQLite<StorePathSet>([&]() {
-        auto state(_state.lock());
-
-        auto useQueryValidDerivers(state->stmtQueryValidDerivers.use()(printStorePath(path)));
-
-        StorePathSet derivers;
-        while (useQueryValidDerivers.next())
-            derivers.insert(parseStorePath(useQueryValidDerivers.getStr(1)));
-
-        return derivers;
-    });
-}
-
-
-OutputPathMap LocalStore::queryDerivationOutputMap(const StorePath & path)
-{
-    return retrySQLite<OutputPathMap>([&]() {
-        auto state(_state.lock());
-
-        auto useQueryDerivationOutputs(state->stmtQueryDerivationOutputs.use()
-            (queryValidPathId(*state, path)));
-
-        OutputPathMap outputs;
-        while (useQueryDerivationOutputs.next())
-            outputs.emplace(
-                useQueryDerivationOutputs.getStr(0),
-                parseStorePath(useQueryDerivationOutputs.getStr(1))
-            );
-
-        return outputs;
-    });
-}
-
-
-std::optional<StorePath> LocalStore::queryPathFromHashPart(const std::string & hashPart)
-{
-    if (hashPart.size() != StorePath::HashLen) throw Error("invalid hash part");
-
-    Path prefix = storeDir + "/" + hashPart;
-
-    return retrySQLite<std::optional<StorePath>>([&]() -> std::optional<StorePath> {
-        auto state(_state.lock());
-
-        auto useQueryPathFromHashPart(state->stmtQueryPathFromHashPart.use()(prefix));
-
-        if (!useQueryPathFromHashPart.next()) return {};
-
-        const char * s = (const char *) sqlite3_column_text(state->stmtQueryPathFromHashPart, 0);
-        if (s && prefix.compare(0, prefix.size(), s, prefix.size()) == 0)
-            return parseStorePath(s);
-        return {};
-    });
-}
-
-
-StorePathSet LocalStore::querySubstitutablePaths(const StorePathSet & paths)
-{
-    if (!settings.useSubstitutes) return StorePathSet();
-
-    StorePathSet remaining;
-    for (auto & i : paths)
-        remaining.insert(i);
-
-    StorePathSet res;
-
-    for (auto & sub : getDefaultSubstituters()) {
-        if (remaining.empty()) break;
-        if (sub->storeDir != storeDir) continue;
-        if (!sub->wantMassQuery) continue;
-
-        auto valid = sub->queryValidPaths(remaining);
-
-        StorePathSet remaining2;
-        for (auto & path : remaining)
-            if (valid.count(path))
-                res.insert(path);
-            else
-                remaining2.insert(path);
-
-        std::swap(remaining, remaining2);
-    }
-
-    return res;
-}
-
-
-void LocalStore::querySubstitutablePathInfos(const StorePathSet & paths,
-    SubstitutablePathInfos & infos)
-{
-    if (!settings.useSubstitutes) return;
-    for (auto & sub : getDefaultSubstituters()) {
-        if (sub->storeDir != storeDir) continue;
-        for (auto & path : paths) {
-            if (infos.count(path)) continue;
-            debug("checking substituter '%s' for path '%s'", sub->getUri(), printStorePath(path));
-            try {
-                auto info = sub->queryPathInfo(path);
-                auto narInfo = std::dynamic_pointer_cast<const NarInfo>(
-                    std::shared_ptr<const ValidPathInfo>(info));
-                infos.insert_or_assign(path, SubstitutablePathInfo{
-                    info->deriver,
-                    info->references,
-                    narInfo ? narInfo->fileSize : 0,
-                    info->narSize});
-            } catch (InvalidPath &) {
-            } catch (SubstituterDisabled &) {
-            } catch (Error & e) {
-                if (settings.tryFallback)
-                    logError(e.info());
-                else
-                    throw;
-            }
-        }
-    }
-}
-
-
-void LocalStore::registerValidPath(const ValidPathInfo & info)
-{
-    ValidPathInfos infos;
-    infos.push_back(info);
-    registerValidPaths(infos);
-}
-
-
-void LocalStore::registerValidPaths(const ValidPathInfos & infos)
-{
-    /* SQLite will fsync by default, but the new valid paths may not
-       be fsync-ed.  So some may want to fsync them before registering
-       the validity, at the expense of some speed of the path
-       registering operation. */
-    if (settings.syncBeforeRegistering) sync();
-
-    return retrySQLite<void>([&]() {
-        auto state(_state.lock());
-
-        SQLiteTxn txn(state->db);
-        StorePathSet paths;
-
-        for (auto & i : infos) {
-            assert(i.narHash.type == htSHA256);
-            if (isValidPath_(*state, i.path))
-                updatePathInfo(*state, i);
-            else
-                addValidPath(*state, i, false);
-            paths.insert(i.path);
-        }
-
-        for (auto & i : infos) {
-            auto referrer = queryValidPathId(*state, i.path);
-            for (auto & j : i.references)
-                state->stmtAddReference.use()(referrer)(queryValidPathId(*state, j)).exec();
-        }
-
-        /* Check that the derivation outputs are correct.  We can't do
-           this in addValidPath() above, because the references might
-           not be valid yet. */
-        for (auto & i : infos)
-            if (i.path.isDerivation()) {
-                // FIXME: inefficient; we already loaded the derivation in addValidPath().
-                checkDerivationOutputs(i.path, readDerivation(i.path));
-            }
-
-        /* Do a topological sort of the paths.  This will throw an
-           error if a cycle is detected and roll back the
-           transaction.  Cycles can only occur when a derivation
-           has multiple outputs. */
-        topoSortPaths(paths);
-
-        txn.commit();
-    });
-}
-
-
-/* Invalidate a path.  The caller is responsible for checking that
-   there are no referrers. */
-void LocalStore::invalidatePath(State & state, const StorePath & path)
-{
-    debug("invalidating path '%s'", printStorePath(path));
-
-    state.stmtInvalidatePath.use()(printStorePath(path)).exec();
-
-    /* Note that the foreign key constraints on the Refs table take
-       care of deleting the references entries for `path'. */
-
-    {
-        auto state_(Store::state.lock());
-        state_->pathInfoCache.erase(std::string(path.hashPart()));
-    }
-}
-
-
-const PublicKeys & LocalStore::getPublicKeys()
-{
-    auto state(_state.lock());
-    if (!state->publicKeys)
-        state->publicKeys = std::make_unique<PublicKeys>(getDefaultPublicKeys());
-    return *state->publicKeys;
-}
-
-
-void LocalStore::addToStore(const ValidPathInfo & info, Source & source,
-    RepairFlag repair, CheckSigsFlag checkSigs)
-{
-    if (!info.narHash)
-        throw Error("cannot add path '%s' because it lacks a hash", printStorePath(info.path));
-
-    if (requireSigs && checkSigs && !info.checkSignatures(*this, getPublicKeys()))
-        throw Error("cannot add path '%s' because it lacks a valid signature", printStorePath(info.path));
-
-    addTempRoot(info.path);
-
-    if (repair || !isValidPath(info.path)) {
-
-        PathLocks outputLock;
-
-        auto realPath = Store::toRealPath(info.path);
-
-        /* Lock the output path.  But don't lock if we're being called
-           from a build hook (whose parent process already acquired a
-           lock on this path). */
-        if (!locksHeld.count(printStorePath(info.path)))
-            outputLock.lockPaths({realPath});
-
-        if (repair || !isValidPath(info.path)) {
-
-            deletePath(realPath);
-
-            // text hashing has long been allowed to have non-self-references because it is used for drv files.
-            bool refersToSelf = info.references.count(info.path) > 0;
-            if (info.ca.has_value() && !info.references.empty() && !(std::holds_alternative<TextHash>(*info.ca) && !refersToSelf))
-                settings.requireExperimentalFeature("ca-references");
-
-            /* While restoring the path from the NAR, compute the hash
-               of the NAR. */
-            std::unique_ptr<AbstractHashSink> hashSink;
-            if (!info.ca.has_value() || !info.references.count(info.path))
-                hashSink = std::make_unique<HashSink>(htSHA256);
-            else
-                hashSink = std::make_unique<HashModuloSink>(htSHA256, std::string(info.path.hashPart()));
-
-            LambdaSource wrapperSource([&](unsigned char * data, size_t len) -> size_t {
-                size_t n = source.read(data, len);
-                (*hashSink)(data, n);
-                return n;
-            });
-
-            restorePath(realPath, wrapperSource);
-
-            auto hashResult = hashSink->finish();
-
-            if (hashResult.first != info.narHash)
-                throw Error("hash mismatch importing path '%s';\n  wanted: %s\n  got:    %s",
-                    printStorePath(info.path), info.narHash.to_string(Base32, true), hashResult.first.to_string(Base32, true));
-
-            if (hashResult.second != info.narSize)
-                throw Error("size mismatch importing path '%s';\n  wanted: %s\n  got:   %s",
-                    printStorePath(info.path), info.narSize, hashResult.second);
-
-            autoGC();
-
-            canonicalisePathMetaData(realPath, -1);
-
-            optimisePath(realPath); // FIXME: combine with hashPath()
-
-            registerValidPath(info);
-        }
-
-        outputLock.setDeletion(true);
-    }
-}
-
-
-<<<<<<< HEAD
-StorePath LocalStore::addToStoreFromDump(const string & dump, const string & name,
-    FileIngestionMethod method, HashType hashAlgo, RepairFlag repair)
-{
-    if (method == FileIngestionMethod::Git && hashAlgo != htSHA1)
-        throw Error("git ingestion must use sha1 hash");
-
-    Hash h = hashString(hashAlgo, dump);
-
-    auto dstPath = makeFixedOutputPath(method, h, name);
-
-    addTempRoot(dstPath);
-
-    if (repair || !isValidPath(dstPath)) {
-
-        /* The first check above is an optimisation to prevent
-           unnecessary lock acquisition. */
-
-        auto realPath = Store::toRealPath(dstPath);
-
-        PathLocks outputLock({realPath});
-
-        if (repair || !isValidPath(dstPath)) {
-
-            deletePath(realPath);
-
-            autoGC();
-
-            switch (method) {
-            case FileIngestionMethod::Flat:
-                writeFile(realPath, dump);
-                break;
-            case FileIngestionMethod::Recursive: {
-                StringSource source(dump);
-                restorePath(realPath, source);
-                break;
-            }
-            case FileIngestionMethod::Git: {
-                StringSource source(dump);
-                restoreGit(realPath, source, realStoreDir, storeDir);
-                break;
-            }
-            }
-
-            canonicalisePathMetaData(realPath, -1);
-
-            /* Register the SHA-256 hash of the NAR serialisation of
-               the path in the database.  We may just have computed it
-               above (if called with recursive == true and hashAlgo ==
-               sha256); otherwise, compute it here. */
-            HashResult hash;
-            if (method == FileIngestionMethod::Recursive) {
-                hash.first = hashAlgo == htSHA256 ? h : hashString(htSHA256, dump);
-                hash.second = dump.size();
-            } else
-                hash = hashPath(htSHA256, realPath);
-
-            optimisePath(realPath); // FIXME: combine with hashPath()
-
-            ValidPathInfo info(dstPath);
-            info.narHash = hash.first;
-            info.narSize = hash.second;
-            info.ca = FixedOutputHash { .method = method, .hash = h };
-            registerValidPath(info);
-        }
-
-        outputLock.setDeletion(true);
-    }
-
-    return dstPath;
-}
-
-
-||||||| merged common ancestors
-StorePath LocalStore::addToStoreFromDump(const string & dump, const string & name,
-    FileIngestionMethod method, HashType hashAlgo, RepairFlag repair)
-{
-    Hash h = hashString(hashAlgo, dump);
-
-    auto dstPath = makeFixedOutputPath(method, h, name);
-
-    addTempRoot(dstPath);
-
-    if (repair || !isValidPath(dstPath)) {
-
-        /* The first check above is an optimisation to prevent
-           unnecessary lock acquisition. */
-
-        auto realPath = Store::toRealPath(dstPath);
-
-        PathLocks outputLock({realPath});
-
-        if (repair || !isValidPath(dstPath)) {
-
-            deletePath(realPath);
-
-            autoGC();
-
-            if (method == FileIngestionMethod::Recursive) {
-                StringSource source(dump);
-                restorePath(realPath, source);
-            } else
-                writeFile(realPath, dump);
-
-            canonicalisePathMetaData(realPath, -1);
-
-            /* Register the SHA-256 hash of the NAR serialisation of
-               the path in the database.  We may just have computed it
-               above (if called with recursive == true and hashAlgo ==
-               sha256); otherwise, compute it here. */
-            HashResult hash;
-            if (method == FileIngestionMethod::Recursive) {
-                hash.first = hashAlgo == htSHA256 ? h : hashString(htSHA256, dump);
-                hash.second = dump.size();
-            } else
-                hash = hashPath(htSHA256, realPath);
-
-            optimisePath(realPath); // FIXME: combine with hashPath()
-
-            ValidPathInfo info(dstPath);
-            info.narHash = hash.first;
-            info.narSize = hash.second;
-            info.ca = FixedOutputHash { .method = method, .hash = h };
-            registerValidPath(info);
-        }
-
-        outputLock.setDeletion(true);
-    }
-
-    return dstPath;
-}
-
-
-=======
->>>>>>> 3dcca18c30cbc09652f5ac644a9f8750f9ced0c9
-StorePath LocalStore::addToStore(const string & name, const Path & _srcPath,
-    FileIngestionMethod method, HashType hashAlgo, PathFilter & filter, RepairFlag repair)
-{
-    Path srcPath(absPath(_srcPath));
-    auto source = sinkToSource([&](Sink & sink) {
-        if (method == FileIngestionMethod::Recursive)
-            dumpPath(srcPath, sink, filter);
-        else
-            readFile(srcPath, sink);
-    });
-    return addToStoreFromDump(*source, name, method, hashAlgo, repair);
-}
-
-
-StorePath LocalStore::addToStoreFromDump(Source & source0, const string & name,
-    FileIngestionMethod method, HashType hashAlgo, RepairFlag repair)
-{
-    /* For computing the store path. */
-    auto hashSink = std::make_unique<HashSink>(hashAlgo);
-    TeeSource source { source0, *hashSink };
-
-    /* Read the source path into memory, but only if it's up to
-       narBufferSize bytes. If it's larger, write it to a temporary
-       location in the Nix store. If the subsequently computed
-       destination store path is already valid, we just delete the
-       temporary path. Otherwise, we move it to the destination store
-       path. */
-<<<<<<< HEAD
-    bool inMemory = true;
-    std::string nar; // TODO rename from "nar" to "dump"
-
-    auto source = sinkToSource([&](Sink & sink) {
-
-        LambdaSink sink2([&](const unsigned char * buf, size_t len) {
-            (*hashSink)(buf, len);
-
-            if (inMemory) {
-                if (nar.size() + len > settings.narBufferSize) {
-                    inMemory = false;
-                    sink << 1;
-                    sink((const unsigned char *) nar.data(), nar.size());
-                    nar.clear();
-                } else {
-                    nar.append((const char *) buf, len);
-                }
-            }
-
-            if (!inMemory) sink(buf, len);
-        });
-
-        switch (method) {
-        case FileIngestionMethod::Recursive: {
-            dumpPath(srcPath, sink2, filter);
-            break;
-        }
-        case FileIngestionMethod::Git: {
-            // recursively add to store if path is a directory
-            struct stat st;
-            if (lstat(srcPath.c_str(), &st))
-                throw SysError("getting attributes of path '%1%'", srcPath);
-            if (S_ISDIR(st.st_mode))
-                for (auto & i : readDirectory(srcPath))
-                    addToStore("git", srcPath + "/" + i.name, method, hashAlgo, filter, repair);
-
-            dumpGit(hashAlgo, srcPath, sink2, filter);
-            break;
-        }
-        case FileIngestionMethod::Flat: {
-            readFile(srcPath, sink2);
-            break;
-        }
-        }
-    });
-||||||| merged common ancestors
-    bool inMemory = true;
-    std::string nar; // TODO rename from "nar" to "dump"
-
-    auto source = sinkToSource([&](Sink & sink) {
-
-        LambdaSink sink2([&](const unsigned char * buf, size_t len) {
-            (*hashSink)(buf, len);
-
-            if (inMemory) {
-                if (nar.size() + len > settings.narBufferSize) {
-                    inMemory = false;
-                    sink << 1;
-                    sink((const unsigned char *) nar.data(), nar.size());
-                    nar.clear();
-                } else {
-                    nar.append((const char *) buf, len);
-                }
-            }
-
-            if (!inMemory) sink(buf, len);
-        });
-
-        if (method == FileIngestionMethod::Recursive)
-            dumpPath(srcPath, sink2, filter);
-        else
-            readFile(srcPath, sink2);
-    });
-=======
-    bool inMemory = false;
-
-    std::string dump;
-
-    /* Fill out buffer, and decide whether we are working strictly in
-       memory based on whether we break out because the buffer is full
-       or the original source is empty */
-    while (dump.size() < settings.narBufferSize) {
-        auto oldSize = dump.size();
-        constexpr size_t chunkSize = 1024;
-        auto want = std::min(chunkSize, settings.narBufferSize - oldSize);
-        dump.resize(oldSize + want);
-        auto got = 0;
-        try {
-            got = source.read((uint8_t *) dump.data() + oldSize, want);
-        } catch (EndOfFile &) {
-            inMemory = true;
-            break;
-        }
-        dump.resize(oldSize + got);
-    }
->>>>>>> 3dcca18c30cbc09652f5ac644a9f8750f9ced0c9
-
-    std::unique_ptr<AutoDelete> delTempDir;
-    Path tempPath;
-
-    if (!inMemory) {
-        /* Drain what we pulled so far, and then keep on pulling */
-        StringSource dumpSource { dump };
-        ChainSource bothSource { dumpSource, source };
-
-        auto tempDir = createTempDir(realStoreDir, "add");
-        delTempDir = std::make_unique<AutoDelete>(tempDir);
-        tempPath = tempDir + "/x";
-
-<<<<<<< HEAD
-        switch (method) {
-        case FileIngestionMethod::Flat:
-            writeFile(tempPath, *source);
-            break;
-        case FileIngestionMethod::Recursive:
-            restorePath(tempPath, *source);
-            break;
-        case FileIngestionMethod::Git:
-            restoreGit(tempPath, *source, realStoreDir, storeDir);
-            break;
-        }
-||||||| merged common ancestors
-        if (method == FileIngestionMethod::Recursive)
-            restorePath(tempPath, *source);
-        else
-            writeFile(tempPath, *source);
-=======
-        if (method == FileIngestionMethod::Recursive)
-            restorePath(tempPath, bothSource);
-        else
-            writeFile(tempPath, bothSource);
->>>>>>> 3dcca18c30cbc09652f5ac644a9f8750f9ced0c9
-
-        dump.clear();
-    }
-
-    auto [hash, size] = hashSink->finish();
-
-    auto dstPath = makeFixedOutputPath(method, hash, name);
-
-    addTempRoot(dstPath);
-
-    if (repair || !isValidPath(dstPath)) {
-
-        /* The first check above is an optimisation to prevent
-           unnecessary lock acquisition. */
-
-        auto realPath = Store::toRealPath(dstPath);
-
-        PathLocks outputLock({realPath});
-
-        if (repair || !isValidPath(dstPath)) {
-
-            deletePath(realPath);
-
-            autoGC();
-
-            if (inMemory) {
-                 StringSource dumpSource { dump };
-                /* Restore from the NAR in memory. */
-<<<<<<< HEAD
-                StringSource source(nar);
-                switch (method) {
-                case FileIngestionMethod::Flat:
-                    writeFile(realPath, source);
-                    break;
-                case FileIngestionMethod::Recursive: {
-                    restorePath(realPath, source);
-                    break;
-                }
-                case FileIngestionMethod::Git: {
-                    restoreGit(realPath, source, realStoreDir, storeDir);
-                    break;
-                }
-                }
-||||||| merged common ancestors
-                StringSource source(nar);
-                if (method == FileIngestionMethod::Recursive)
-                    restorePath(realPath, source);
-                else
-                    writeFile(realPath, source);
-=======
-                if (method == FileIngestionMethod::Recursive)
-                    restorePath(realPath, dumpSource);
-                else
-                    writeFile(realPath, dumpSource);
->>>>>>> 3dcca18c30cbc09652f5ac644a9f8750f9ced0c9
-            } else {
-                /* Move the temporary path we restored above. */
-                if (rename(tempPath.c_str(), realPath.c_str()))
-                    throw Error("renaming '%s' to '%s'", tempPath, realPath);
-            }
-
-            /* For computing the nar hash. In recursive SHA-256 mode, this
-               is the same as the store hash, so no need to do it again. */
-            auto narHash = std::pair { hash, size };
-            if (method != FileIngestionMethod::Recursive || hashAlgo != htSHA256) {
-                HashSink narSink { htSHA256 };
-                dumpPath(realPath, narSink);
-                narHash = narSink.finish();
-            }
-
-            canonicalisePathMetaData(realPath, -1); // FIXME: merge into restorePath
-
-            optimisePath(realPath);
-
-            ValidPathInfo info(dstPath);
-            info.narHash = narHash.first;
-            info.narSize = narHash.second;
-            info.ca = FixedOutputHash { .method = method, .hash = hash };
-            registerValidPath(info);
-        }
-
-        outputLock.setDeletion(true);
-    }
-
-    return dstPath;
-}
-
-
-StorePath LocalStore::addTextToStore(const string & name, const string & s,
-    const StorePathSet & references, RepairFlag repair)
-{
-    auto hash = hashString(htSHA256, s);
-    auto dstPath = makeTextPath(name, hash, references);
-
-    addTempRoot(dstPath);
-
-    if (repair || !isValidPath(dstPath)) {
-
-        auto realPath = Store::toRealPath(dstPath);
-
-        PathLocks outputLock({realPath});
-
-        if (repair || !isValidPath(dstPath)) {
-
-            deletePath(realPath);
-
-            autoGC();
-
-            writeFile(realPath, s);
-
-            canonicalisePathMetaData(realPath, -1);
-
-            StringSink sink;
-            dumpString(s, sink);
-            auto narHash = hashString(htSHA256, *sink.s);
-
-            optimisePath(realPath);
-
-            ValidPathInfo info(dstPath);
-            info.narHash = narHash;
-            info.narSize = sink.s->size();
-            info.references = references;
-            info.ca = TextHash { .hash = hash };
-            registerValidPath(info);
-        }
-
-        outputLock.setDeletion(true);
-    }
-
-    return dstPath;
-}
-
-
-/* Create a temporary directory in the store that won't be
-   garbage-collected. */
-Path LocalStore::createTempDirInStore()
-{
-    Path tmpDir;
-    do {
-        /* There is a slight possibility that `tmpDir' gets deleted by
-           the GC between createTempDir() and addTempRoot(), so repeat
-           until `tmpDir' exists. */
-        tmpDir = createTempDir(realStoreDir);
-        addTempRoot(parseStorePath(tmpDir));
-    } while (!pathExists(tmpDir));
-    return tmpDir;
-}
-
-
-void LocalStore::invalidatePathChecked(const StorePath & path)
-{
-    retrySQLite<void>([&]() {
-        auto state(_state.lock());
-
-        SQLiteTxn txn(state->db);
-
-        if (isValidPath_(*state, path)) {
-            StorePathSet referrers; queryReferrers(*state, path, referrers);
-            referrers.erase(path); /* ignore self-references */
-            if (!referrers.empty())
-                throw PathInUse("cannot delete path '%s' because it is in use by %s",
-                    printStorePath(path), showPaths(referrers));
-            invalidatePath(*state, path);
-        }
-
-        txn.commit();
-    });
-}
-
-
-bool LocalStore::verifyStore(bool checkContents, RepairFlag repair)
-{
-    printInfo(format("reading the Nix store..."));
-
-    bool errors = false;
-
-    /* Acquire the global GC lock to get a consistent snapshot of
-       existing and valid paths. */
-    AutoCloseFD fdGCLock = openGCLock(ltWrite);
-
-    StringSet store;
-    for (auto & i : readDirectory(realStoreDir)) store.insert(i.name);
-
-    /* Check whether all valid paths actually exist. */
-    printInfo("checking path existence...");
-
-    StorePathSet validPaths;
-    PathSet done;
-
-    fdGCLock = -1;
-
-    for (auto & i : queryAllValidPaths())
-        verifyPath(printStorePath(i), store, done, validPaths, repair, errors);
-
-    /* Optionally, check the content hashes (slow). */
-    if (checkContents) {
-
-        printInfo("checking link hashes...");
-
-        for (auto & link : readDirectory(linksDir)) {
-            printMsg(lvlTalkative, "checking contents of '%s'", link.name);
-            Path linkPath = linksDir + "/" + link.name;
-            string hash = hashPath(htSHA256, linkPath).first.to_string(Base32, false);
-            if (hash != link.name) {
-                logError({
-                    .name = "Invalid hash",
-                    .hint = hintfmt(
-                        "link '%s' was modified! expected hash '%s', got '%s'",
-                        linkPath, link.name, hash)
-                });
-                if (repair) {
-                    if (unlink(linkPath.c_str()) == 0)
-                        printInfo("removed link '%s'", linkPath);
-                    else
-                        throw SysError("removing corrupt link '%s'", linkPath);
-                } else {
-                    errors = true;
-                }
-            }
-        }
-
-        printInfo("checking store hashes...");
-
-        Hash nullHash(htSHA256);
-
-        for (auto & i : validPaths) {
-            try {
-                auto info = std::const_pointer_cast<ValidPathInfo>(std::shared_ptr<const ValidPathInfo>(queryPathInfo(i)));
-
-                /* Check the content hash (optionally - slow). */
-                printMsg(lvlTalkative, "checking contents of '%s'", printStorePath(i));
-
-                std::unique_ptr<AbstractHashSink> hashSink;
-                if (!info->ca || !info->references.count(info->path))
-                    hashSink = std::make_unique<HashSink>(*info->narHash.type);
-                else
-                    hashSink = std::make_unique<HashModuloSink>(*info->narHash.type, std::string(info->path.hashPart()));
-
-                dumpPath(Store::toRealPath(i), *hashSink);
-                auto current = hashSink->finish();
-
-                if (info->narHash != nullHash && info->narHash != current.first) {
-                    logError({
-                        .name = "Invalid hash - path modified",
-                        .hint = hintfmt("path '%s' was modified! expected hash '%s', got '%s'",
-                        printStorePath(i), info->narHash.to_string(Base32, true), current.first.to_string(Base32, true))
-                    });
-                    if (repair) repairPath(i); else errors = true;
-                } else {
-
-                    bool update = false;
-
-                    /* Fill in missing hashes. */
-                    if (info->narHash == nullHash) {
-                        printInfo("fixing missing hash on '%s'", printStorePath(i));
-                        info->narHash = current.first;
-                        update = true;
-                    }
-
-                    /* Fill in missing narSize fields (from old stores). */
-                    if (info->narSize == 0) {
-                        printInfo("updating size field on '%s' to %s", printStorePath(i), current.second);
-                        info->narSize = current.second;
-                        update = true;
-                    }
-
-                    if (update) {
-                        auto state(_state.lock());
-                        updatePathInfo(*state, *info);
-                    }
-
-                }
-
-            } catch (Error & e) {
-                /* It's possible that the path got GC'ed, so ignore
-                   errors on invalid paths. */
-                if (isValidPath(i))
-                    logError(e.info());
-                else
-                    warn(e.msg());
-                errors = true;
-            }
-        }
-    }
-
-    return errors;
-}
-
-
-void LocalStore::verifyPath(const Path & pathS, const StringSet & store,
-    PathSet & done, StorePathSet & validPaths, RepairFlag repair, bool & errors)
-{
-    checkInterrupt();
-
-    if (!done.insert(pathS).second) return;
-
-    if (!isStorePath(pathS)) {
-        logError({
-            .name = "Nix path not found",
-            .hint = hintfmt("path '%s' is not in the Nix store", pathS)
-        });
-        return;
-    }
-
-    auto path = parseStorePath(pathS);
-
-    if (!store.count(std::string(path.to_string()))) {
-        /* Check any referrers first.  If we can invalidate them
-           first, then we can invalidate this path as well. */
-        bool canInvalidate = true;
-        StorePathSet referrers; queryReferrers(path, referrers);
-        for (auto & i : referrers)
-            if (i != path) {
-                verifyPath(printStorePath(i), store, done, validPaths, repair, errors);
-                if (validPaths.count(i))
-                    canInvalidate = false;
-            }
-
-        if (canInvalidate) {
-            printInfo("path '%s' disappeared, removing from database...", pathS);
-            auto state(_state.lock());
-            invalidatePath(*state, path);
-        } else {
-            logError({
-                .name = "Missing path with referrers",
-                .hint = hintfmt("path '%s' disappeared, but it still has valid referrers!", pathS)
-            });
-            if (repair)
-                try {
-                    repairPath(path);
-                } catch (Error & e) {
-                    logWarning(e.info());
-                    errors = true;
-                }
-            else errors = true;
-        }
-
-        return;
-    }
-
-    validPaths.insert(std::move(path));
-}
-
-
-unsigned int LocalStore::getProtocol()
-{
-    return PROTOCOL_VERSION;
-}
-
-
-#if defined(FS_IOC_SETFLAGS) && defined(FS_IOC_GETFLAGS) && defined(FS_IMMUTABLE_FL)
-
-static void makeMutable(const Path & path)
-{
-    checkInterrupt();
-
-    struct stat st = lstat(path);
-
-    if (!S_ISDIR(st.st_mode) && !S_ISREG(st.st_mode)) return;
-
-    if (S_ISDIR(st.st_mode)) {
-        for (auto & i : readDirectory(path))
-            makeMutable(path + "/" + i.name);
-    }
-
-    /* The O_NOFOLLOW is important to prevent us from changing the
-       mutable bit on the target of a symlink (which would be a
-       security hole). */
-    AutoCloseFD fd = open(path.c_str(), O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
-    if (fd == -1) {
-        if (errno == ELOOP) return; // it's a symlink
-        throw SysError("opening file '%1%'", path);
-    }
-
-    unsigned int flags = 0, old;
-
-    /* Silently ignore errors getting/setting the immutable flag so
-       that we work correctly on filesystems that don't support it. */
-    if (ioctl(fd, FS_IOC_GETFLAGS, &flags)) return;
-    old = flags;
-    flags &= ~FS_IMMUTABLE_FL;
-    if (old == flags) return;
-    if (ioctl(fd, FS_IOC_SETFLAGS, &flags)) return;
-}
-
-/* Upgrade from schema 6 (Nix 0.15) to schema 7 (Nix >= 1.3). */
-void LocalStore::upgradeStore7()
-{
-    if (getuid() != 0) return;
-    printInfo("removing immutable bits from the Nix store (this may take a while)...");
-    makeMutable(realStoreDir);
-}
-
-#else
-
-void LocalStore::upgradeStore7()
-{
-}
-
-#endif
-
-
-void LocalStore::vacuumDB()
-{
-    auto state(_state.lock());
-    state->db.exec("vacuum");
-}
-
-
-void LocalStore::addSignatures(const StorePath & storePath, const StringSet & sigs)
-{
-    retrySQLite<void>([&]() {
-        auto state(_state.lock());
-
-        SQLiteTxn txn(state->db);
-
-        auto info = std::const_pointer_cast<ValidPathInfo>(std::shared_ptr<const ValidPathInfo>(queryPathInfo(storePath)));
-
-        info->sigs.insert(sigs.begin(), sigs.end());
-
-        updatePathInfo(*state, *info);
-
-        txn.commit();
-    });
-}
-
-
-void LocalStore::signPathInfo(ValidPathInfo & info)
-{
-    // FIXME: keep secret keys in memory.
-
-    auto secretKeyFiles = settings.secretKeyFiles;
-
-    for (auto & secretKeyFile : secretKeyFiles.get()) {
-        SecretKey secretKey(readFile(secretKeyFile));
-        info.sign(*this, secretKey);
-    }
-}
-
-
-void LocalStore::createUser(const std::string & userName, uid_t userId)
-{
-    for (auto & dir : {
-        fmt("%s/profiles/per-user/%s", stateDir, userName),
-        fmt("%s/gcroots/per-user/%s", stateDir, userName)
-    }) {
-        createDirs(dir);
-        if (chmod(dir.c_str(), 0755) == -1)
-            throw SysError("changing permissions of directory '%s'", dir);
-        if (chown(dir.c_str(), userId, getgid()) == -1)
-            throw SysError("changing owner of directory '%s'", dir);
-    }
-}
-
-
-}