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Merge remote-tracking branch 'upstream/master' into non-local-store-build

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This commit is contained in:
John Ericson 2021-01-15 02:01:24 +00:00
parent fed1237246 7a472a76d4
commit 0027b05a15
90 changed files with 1468 additions and 723 deletions
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1
Makefile.config.in
View file

@ -10,7 +10,6 @@ EDITLINE_LIBS = @EDITLINE_LIBS@
ENABLE_S3 = @ENABLE_S3@
GTEST_LIBS = @GTEST_LIBS@
HAVE_SECCOMP = @HAVE_SECCOMP@
HAVE_SODIUM = @HAVE_SODIUM@
LDFLAGS = @LDFLAGS@
LIBARCHIVE_LIBS = @LIBARCHIVE_LIBS@
LIBBROTLI_LIBS = @LIBBROTLI_LIBS@

2
README.md
View file

@ -20,7 +20,7 @@ Information on additional installation methods is available on the [Nix download
## Building And Developing
See our [Hacking guide](https://hydra.nixos.org/job/nix/master/build.x86_64-linux/latest/download-by-type/doc/manual/hacking.html) in our manual for instruction on how to
See our [Hacking guide](https://hydra.nixos.org/job/nix/master/build.x86_64-linux/latest/download-by-type/doc/manual/contributing/hacking.html) in our manual for instruction on how to
build nix from source with nix-build or how to get a development environment.
## Additional Resources

10
configure.ac
View file

@ -174,9 +174,9 @@ PKG_CHECK_MODULES([OPENSSL], [libcrypto], [CXXFLAGS="$OPENSSL_CFLAGS $CXXFLAGS"]
# Look for libbz2, a required dependency.
AC_CHECK_LIB([bz2], [BZ2_bzWriteOpen], [true],
[AC_MSG_ERROR([Nix requires libbz2, which is part of bzip2. See https://web.archive.org/web/20180624184756/http://www.bzip.org/.])])
[AC_MSG_ERROR([Nix requires libbz2, which is part of bzip2. See https://sourceware.org/bzip2/.])])
AC_CHECK_HEADERS([bzlib.h], [true],
[AC_MSG_ERROR([Nix requires libbz2, which is part of bzip2. See https://web.archive.org/web/20180624184756/http://www.bzip.org/.])])
[AC_MSG_ERROR([Nix requires libbz2, which is part of bzip2. See https://sourceware.org/bzip2/.])])
# Checks for libarchive
PKG_CHECK_MODULES([LIBARCHIVE], [libarchive >= 3.1.2], [CXXFLAGS="$LIBARCHIVE_CFLAGS $CXXFLAGS"])
# Workaround until https://github.com/libarchive/libarchive/issues/1446 is fixed
@ -203,11 +203,7 @@ PKG_CHECK_MODULES([EDITLINE], [libeditline], [CXXFLAGS="$EDITLINE_CFLAGS $CXXFLA
])
# Look for libsodium, an optional dependency.
PKG_CHECK_MODULES([SODIUM], [libsodium],
[AC_DEFINE([HAVE_SODIUM], [1], [Whether to use libsodium for cryptography.])
CXXFLAGS="$SODIUM_CFLAGS $CXXFLAGS"
have_sodium=1], [have_sodium=])
AC_SUBST(HAVE_SODIUM, [$have_sodium])
PKG_CHECK_MODULES([SODIUM], [libsodium], [CXXFLAGS="$SODIUM_CFLAGS $CXXFLAGS"])
# Look for liblzma, a required dependency.
PKG_CHECK_MODULES([LIBLZMA], [liblzma], [CXXFLAGS="$LIBLZMA_CFLAGS $CXXFLAGS"])

4
doc/manual/src/advanced-topics/post-build-hook.md
View file

@ -53,7 +53,7 @@ set -f # disable globbing
export IFS=' '
echo "Signing paths" $OUT_PATHS
nix sign-paths --key-file /etc/nix/key.private $OUT_PATHS
nix store sign --key-file /etc/nix/key.private $OUT_PATHS
echo "Uploading paths" $OUT_PATHS
exec nix copy --to 's3://example-nix-cache' $OUT_PATHS
```
@ -63,7 +63,7 @@ exec nix copy --to 's3://example-nix-cache' $OUT_PATHS
> The `$OUT_PATHS` variable is a space-separated list of Nix store
> paths. In this case, we expect and want the shell to perform word
> splitting to make each output path its own argument to `nix
> sign-paths`. Nix guarantees the paths will not contain any spaces,
> store sign`. Nix guarantees the paths will not contain any spaces,
> however a store path might contain glob characters. The `set -f`
> disables globbing in the shell.

2
doc/manual/src/command-ref/nix-store.md
View file

@ -226,7 +226,7 @@ control what gets deleted and in what order:
or TiB units.
The behaviour of the collector is also influenced by the
`keep-outputs` and `keep-derivations` variables in the Nix
`keep-outputs` and `keep-derivations` settings in the Nix
configuration file.
By default, the collector prints the total number of freed bytes when it

2
doc/manual/src/installation/prerequisites-source.md
View file

@ -30,7 +30,7 @@
have bzip2 installed, including development headers and libraries.
If your distribution does not provide these, you can obtain bzip2
from
<https://web.archive.org/web/20180624184756/http://www.bzip.org/>.
<https://sourceware.org/bzip2/>.
- `liblzma`, which is provided by XZ Utils. If your distribution does
not provide this, you can get it from <https://tukaani.org/xz/>.

6
doc/manual/src/introduction.md
View file

@ -165,10 +165,10 @@ You’re then dropped into a shell where you can edit, build and test
the package:
```console
[nix-shell]$ tar xf $src
[nix-shell]$ unpackPhase
[nix-shell]$ cd pan-*
[nix-shell]$ ./configure
[nix-shell]$ make
[nix-shell]$ configurePhase
[nix-shell]$ buildPhase
[nix-shell]$ ./pan/gui/pan
```

1
perl/Makefile.config.in
View file

@ -2,7 +2,6 @@ CC = @CC@
CFLAGS = @CFLAGS@
CXX = @CXX@
CXXFLAGS = @CXXFLAGS@
HAVE_SODIUM = @HAVE_SODIUM@
PACKAGE_NAME = @PACKAGE_NAME@
PACKAGE_VERSION = @PACKAGE_VERSION@
SODIUM_LIBS = @SODIUM_LIBS@

6
perl/configure.ac
View file

@ -40,11 +40,7 @@ AC_SUBST(perllibdir, [${libdir}/perl5/site_perl/$perlversion/$perlarchname])
AC_MSG_RESULT($perllibdir)
# Look for libsodium, an optional dependency.
PKG_CHECK_MODULES([SODIUM], [libsodium],
[AC_DEFINE([HAVE_SODIUM], [1], [Whether to use libsodium for cryptography.])
CXXFLAGS="$SODIUM_CFLAGS $CXXFLAGS"
have_sodium=1], [have_sodium=])
AC_SUBST(HAVE_SODIUM, [$have_sodium])
PKG_CHECK_MODULES([SODIUM], [libsodium], [CXXFLAGS="$SODIUM_CFLAGS $CXXFLAGS"])
# Check for the required Perl dependencies (DBI and DBD::SQLite).
perlFlags="-I$perllibdir"

10
perl/lib/Nix/Store.xs
View file

@ -14,9 +14,7 @@
#include "util.hh"
#include "crypto.hh"
#if HAVE_SODIUM
#include <sodium.h>
#endif
using namespace nix;
@ -239,12 +237,8 @@ SV * convertHash(char * algo, char * s, int toBase32)
SV * signString(char * secretKey_, char * msg)
PPCODE:
try {
#if HAVE_SODIUM
auto sig = SecretKey(secretKey_).signDetached(msg);
XPUSHs(sv_2mortal(newSVpv(sig.c_str(), sig.size())));
#else
throw Error("Nix was not compiled with libsodium, required for signed binary cache support");
#endif
} catch (Error & e) {
croak("%s", e.what());
}
@ -253,7 +247,6 @@ SV * signString(char * secretKey_, char * msg)
int checkSignature(SV * publicKey_, SV * sig_, char * msg)
CODE:
try {
#if HAVE_SODIUM
STRLEN publicKeyLen;
unsigned char * publicKey = (unsigned char *) SvPV(publicKey_, publicKeyLen);
if (publicKeyLen != crypto_sign_PUBLICKEYBYTES)
@ -265,9 +258,6 @@ int checkSignature(SV * publicKey_, SV * sig_, char * msg)
throw Error("signature is not valid");
RETVAL = crypto_sign_verify_detached(sig, (unsigned char *) msg, strlen(msg), publicKey) == 0;
#else
throw Error("Nix was not compiled with libsodium, required for signed binary cache support");
#endif
} catch (Error & e) {
croak("%s", e.what());
}

14
src/libexpr/attr-path.cc
View file

@ -52,9 +52,7 @@ std::pair<Value *, Pos> findAlongAttrPath(EvalState & state, const string & attr
for (auto & attr : tokens) {
/* Is i an index (integer) or a normal attribute name? */
enum { apAttr, apIndex } apType = apAttr;
unsigned int attrIndex;
if (string2Int(attr, attrIndex)) apType = apIndex;
auto attrIndex = string2Int<unsigned int>(attr);
/* Evaluate the expression. */
Value * vNew = state.allocValue();
@ -65,7 +63,7 @@ std::pair<Value *, Pos> findAlongAttrPath(EvalState & state, const string & attr
/* It should evaluate to either a set or an expression,
according to what is specified in the attrPath. */
if (apType == apAttr) {
if (!attrIndex) {
if (v->type() != nAttrs)
throw TypeError(
@ -82,17 +80,17 @@ std::pair<Value *, Pos> findAlongAttrPath(EvalState & state, const string & attr
pos = *a->pos;
}
else if (apType == apIndex) {
else {
if (!v->isList())
throw TypeError(
"the expression selected by the selection path '%1%' should be a list but is %2%",
attrPath,
showType(*v));
if (attrIndex >= v->listSize())
throw AttrPathNotFound("list index %1% in selection path '%2%' is out of range", attrIndex, attrPath);
if (*attrIndex >= v->listSize())
throw AttrPathNotFound("list index %1% in selection path '%2%' is out of range", *attrIndex, attrPath);
v = v->listElems()[attrIndex];
v = v->listElems()[*attrIndex];
pos = noPos;
}

10
src/libexpr/common-eval-args.cc
View file

@ -14,14 +14,14 @@ MixEvalArgs::MixEvalArgs()
{
addFlag({
.longName = "arg",
.description = "argument to be passed to Nix functions",
.description = "Pass the value *expr* as the argument *name* to Nix functions.",
.labels = {"name", "expr"},
.handler = {[&](std::string name, std::string expr) { autoArgs[name] = 'E' + expr; }}
});
addFlag({
.longName = "argstr",
.description = "string-valued argument to be passed to Nix functions",
.description = "Pass the string *string* as the argument *name* to Nix functions.",
.labels = {"name", "string"},
.handler = {[&](std::string name, std::string s) { autoArgs[name] = 'S' + s; }},
});
@ -29,14 +29,14 @@ MixEvalArgs::MixEvalArgs()
addFlag({
.longName = "include",
.shortName = 'I',
.description = "add a path to the list of locations used to look up `<...>` file names",
.description = "Add *path* to the list of locations used to look up `<...>` file names.",
.labels = {"path"},
.handler = {[&](std::string s) { searchPath.push_back(s); }}
});
addFlag({
.longName = "impure",
.description = "allow access to mutable paths and repositories",
.description = "Allow access to mutable paths and repositories.",
.handler = {[&]() {
evalSettings.pureEval = false;
}},
@ -44,7 +44,7 @@ MixEvalArgs::MixEvalArgs()
addFlag({
.longName = "override-flake",
.description = "override a flake registry value",
.description = "Override the flake registries, redirecting *original-ref* to *resolved-ref*.",
.labels = {"original-ref", "resolved-ref"},
.handler = {[&](std::string _from, std::string _to) {
auto from = parseFlakeRef(_from, absPath("."));

2
src/libexpr/eval-cache.cc
View file

@ -394,7 +394,7 @@ Value & AttrCursor::forceValue()
cachedValue = {root->db->setString(getKey(), v.string.s, v.string.context),
string_t{v.string.s, {}}};
else if (v.type() == nPath)
cachedValue = {root->db->setString(getKey(), v.path), v.path};
cachedValue = {root->db->setString(getKey(), v.path), string_t{v.path, {}}};
else if (v.type() == nBool)
cachedValue = {root->db->setBool(getKey(), v.boolean), v.boolean};
else if (v.type() == nAttrs)

15
src/libexpr/flake/flake.cc
View file

@ -120,12 +120,21 @@ static FlakeInput parseFlakeInput(EvalState & state,
expectType(state, nString, *attr.value, *attr.pos);
input.follows = parseInputPath(attr.value->string.s);
} else {
if (attr.value->type() == nString)
switch (attr.value->type()) {
case nString:
attrs.emplace(attr.name, attr.value->string.s);
else
throw TypeError("flake input attribute '%s' is %s while a string is expected",
break;
case nBool:
attrs.emplace(attr.name, Explicit<bool> { attr.value->boolean });
break;
case nInt:
attrs.emplace(attr.name, attr.value->integer);
break;
default:
throw TypeError("flake input attribute '%s' is %s while a string, Boolean, or integer is expected",
attr.name, showType(*attr.value));
}
}
} catch (Error & e) {
e.addTrace(*attr.pos, hintfmt("in flake attribute '%s'", attr.name));
throw;

8
src/libexpr/get-drvs.cc
View file

@ -214,8 +214,8 @@ NixInt DrvInfo::queryMetaInt(const string & name, NixInt def)
if (v->type() == nString) {
/* Backwards compatibility with before we had support for
integer meta fields. */
NixInt n;
if (string2Int(v->string.s, n)) return n;
if (auto n = string2Int<NixInt>(v->string.s))
return *n;
}
return def;
}
@ -228,8 +228,8 @@ NixFloat DrvInfo::queryMetaFloat(const string & name, NixFloat def)
if (v->type() == nString) {
/* Backwards compatibility with before we had support for
float meta fields. */
NixFloat n;
if (string2Float(v->string.s, n)) return n;
if (auto n = string2Float<NixFloat>(v->string.s))
return *n;
}
return def;
}

2
src/libexpr/primops/fetchTree.cc
View file

@ -104,7 +104,7 @@ static void fetchTree(
else if (attr.value->type() == nBool)
attrs.emplace(attr.name, Explicit<bool>{attr.value->boolean});
else if (attr.value->type() == nInt)
attrs.emplace(attr.name, attr.value->integer);
attrs.emplace(attr.name, uint64_t(attr.value->integer));
else
throw TypeError("fetchTree argument '%s' is %s while a string, Boolean or integer is expected",
attr.name, showType(*attr.value));

4
src/libfetchers/attrs.cc
View file

@ -11,11 +11,11 @@ Attrs jsonToAttrs(const nlohmann::json & json)
for (auto & i : json.items()) {
if (i.value().is_number())
attrs.emplace(i.key(), i.value().get<int64_t>());
attrs.emplace(i.key(), i.value().get<uint64_t>());
else if (i.value().is_string())
attrs.emplace(i.key(), i.value().get<std::string>());
else if (i.value().is_boolean())
attrs.emplace(i.key(), i.value().get<bool>());
attrs.emplace(i.key(), Explicit<bool> { i.value().get<bool>() });
else
throw Error("unsupported input attribute type in lock file");
}

4
src/libfetchers/github.cc
View file

@ -195,14 +195,14 @@ struct GitArchiveInputScheme : InputScheme
auto [tree, lastModified] = downloadTarball(store, url.url, "source", true, url.headers);
input.attrs.insert_or_assign("lastModified", lastModified);
input.attrs.insert_or_assign("lastModified", uint64_t(lastModified));
getCache()->add(
store,
immutableAttrs,
{
{"rev", rev->gitRev()},
{"lastModified", lastModified}
{"lastModified", uint64_t(lastModified)}
},
tree.storePath,
true);

2
src/libfetchers/mercurial.cc
View file

@ -301,7 +301,7 @@ struct MercurialInputScheme : InputScheme
Attrs infoAttrs({
{"rev", input.getRev()->gitRev()},
{"revCount", (int64_t) revCount},
{"revCount", (uint64_t) revCount},
});
if (!_input.getRev())

6
src/libfetchers/path.cc
View file

@ -20,10 +20,10 @@ struct PathInputScheme : InputScheme
if (name == "rev" || name == "narHash")
input.attrs.insert_or_assign(name, value);
else if (name == "revCount" || name == "lastModified") {
uint64_t n;
if (!string2Int(value, n))
if (auto n = string2Int<uint64_t>(value))
input.attrs.insert_or_assign(name, *n);
else
throw Error("path URL '%s' has invalid parameter '%s'", url.to_string(), name);
input.attrs.insert_or_assign(name, n);
}
else
throw Error("path URL '%s' has unsupported parameter '%s'", url.to_string(), name);

2
src/libfetchers/tarball.cc
View file

@ -152,7 +152,7 @@ std::pair<Tree, time_t> downloadTarball(
}
Attrs infoAttrs({
{"lastModified", lastModified},
{"lastModified", uint64_t(lastModified)},
{"etag", res.etag},
});

13
src/libmain/common-args.cc
View file

@ -10,25 +10,25 @@ MixCommonArgs::MixCommonArgs(const string & programName)
addFlag({
.longName = "verbose",
.shortName = 'v',
.description = "increase verbosity level",
.description = "Increase the logging verbosity level.",
.handler = {[]() { verbosity = (Verbosity) (verbosity + 1); }},
});
addFlag({
.longName = "quiet",
.description = "decrease verbosity level",
.description = "Decrease the logging verbosity level.",
.handler = {[]() { verbosity = verbosity > lvlError ? (Verbosity) (verbosity - 1) : lvlError; }},
});
addFlag({
.longName = "debug",
.description = "enable debug output",
.description = "Set the logging verbosity level to 'debug'.",
.handler = {[]() { verbosity = lvlDebug; }},
});
addFlag({
.longName = "option",
.description = "set a Nix configuration option (overriding `nix.conf`)",
.description = "Set the Nix configuration setting *name* to *value* (overriding `nix.conf`).",
.labels = {"name", "value"},
.handler = {[](std::string name, std::string value) {
try {
@ -51,8 +51,7 @@ MixCommonArgs::MixCommonArgs(const string & programName)
addFlag({
.longName = "log-format",
.description = "format of log output; `raw`, `internal-json`, `bar` "
"or `bar-with-logs`",
.description = "Set the format of log output; one of `raw`, `internal-json`, `bar` or `bar-with-logs`.",
.labels = {"format"},
.handler = {[](std::string format) { setLogFormat(format); }},
});
@ -60,7 +59,7 @@ MixCommonArgs::MixCommonArgs(const string & programName)
addFlag({
.longName = "max-jobs",
.shortName = 'j',
.description = "maximum number of parallel builds",
.description = "The maximum number of parallel builds.",
.labels = Strings{"jobs"},
.handler = {[=](std::string s) {
settings.set("max-jobs", s);

4
src/libmain/common-args.hh
View file

@ -16,7 +16,7 @@ struct MixDryRun : virtual Args
MixDryRun()
{
mkFlag(0, "dry-run", "show what this command would do without doing it", &dryRun);
mkFlag(0, "dry-run", "Show what this command would do without doing it.", &dryRun);
}
};
@ -26,7 +26,7 @@ struct MixJSON : virtual Args
MixJSON()
{
mkFlag(0, "json", "produce JSON output", &json);
mkFlag(0, "json", "Produce output in JSON format, suitable for consumption by another program.", &json);
}
};

39
src/libmain/shared.cc
View file

@ -18,6 +18,8 @@
#include <openssl/crypto.h>
#include <sodium.h>
namespace nix {
@ -126,6 +128,9 @@ void initNix()
CRYPTO_set_locking_callback(opensslLockCallback);
#endif
if (sodium_init() == -1)
throw Error("could not initialise libsodium");
loadConfFile();
startSignalHandlerThread();
@ -181,50 +186,58 @@ LegacyArgs::LegacyArgs(const std::string & programName,
addFlag({
.longName = "no-build-output",
.shortName = 'Q',
.description = "do not show build output",
.description = "Do not show build output.",
.handler = {[&]() {setLogFormat(LogFormat::raw); }},
});
addFlag({
.longName = "keep-failed",
.shortName ='K',
.description = "keep temporary directories of failed builds",
.description = "Keep temporary directories of failed builds.",
.handler = {&(bool&) settings.keepFailed, true},
});
addFlag({
.longName = "keep-going",
.shortName ='k',
.description = "keep going after a build fails",
.description = "Keep going after a build fails.",
.handler = {&(bool&) settings.keepGoing, true},
});
addFlag({
.longName = "fallback",
.description = "build from source if substitution fails",
.description = "Build from source if substitution fails.",
.handler = {&(bool&) settings.tryFallback, true},
});
auto intSettingAlias = [&](char shortName, const std::string & longName,
const std::string & description, const std::string & dest) {
mkFlag<unsigned int>(shortName, longName, description, [=](unsigned int n) {
const std::string & description, const std::string & dest)
{
addFlag({
.longName = longName,
.shortName = shortName,
.description = description,
.labels = {"n"},
.handler = {[=](std::string s) {
auto n = string2IntWithUnitPrefix<uint64_t>(s);
settings.set(dest, std::to_string(n));
}}
});
};
intSettingAlias(0, "cores", "maximum number of CPU cores to use inside a build", "cores");
intSettingAlias(0, "max-silent-time", "number of seconds of silence before a build is killed", "max-silent-time");
intSettingAlias(0, "timeout", "number of seconds before a build is killed", "timeout");
intSettingAlias(0, "cores", "Maximum number of CPU cores to use inside a build.", "cores");
intSettingAlias(0, "max-silent-time", "Number of seconds of silence before a build is killed.", "max-silent-time");
intSettingAlias(0, "timeout", "Number of seconds before a build is killed.", "timeout");
mkFlag(0, "readonly-mode", "do not write to the Nix store",
mkFlag(0, "readonly-mode", "Do not write to the Nix store.",
&settings.readOnlyMode);
mkFlag(0, "no-gc-warning", "disable warning about not using '--add-root'",
mkFlag(0, "no-gc-warning", "Disable warnings about not using `--add-root`.",
&gcWarning, false);
addFlag({
.longName = "store",
.description = "URI of the Nix store to use",
.description = "The URL of the Nix store to use.",
.labels = {"store-uri"},
.handler = {&(std::string&) settings.storeUri},
});
@ -274,9 +287,7 @@ void printVersion(const string & programName)
#if HAVE_BOEHMGC
cfg.push_back("gc");
#endif
#if HAVE_SODIUM
cfg.push_back("signed-caches");
#endif
std::cout << "System type: " << settings.thisSystem << "\n";
std::cout << "Additional system types: " << concatStringsSep(", ", settings.extraPlatforms.get()) << "\n";
std::cout << "Features: " << concatStringsSep(", ", cfg) << "\n";

18
src/libmain/shared.hh
View file

@ -57,23 +57,7 @@ template<class N> N getIntArg(const string & opt,
{
++i;
if (i == end) throw UsageError("'%1%' requires an argument", opt);
string s = *i;
N multiplier = 1;
if (allowUnit && !s.empty()) {
char u = std::toupper(*s.rbegin());
if (std::isalpha(u)) {
if (u == 'K') multiplier = 1ULL << 10;
else if (u == 'M') multiplier = 1ULL << 20;
else if (u == 'G') multiplier = 1ULL << 30;
else if (u == 'T') multiplier = 1ULL << 40;
else throw UsageError("invalid unit specifier '%1%'", u);
s.resize(s.size() - 1);
}
}
N n;
if (!string2Int(s, n))
throw UsageError("'%1%' requires an integer argument", opt);
return n * multiplier;
return string2IntWithUnitPrefix<N>(*i);
}

41
src/libstore/build/derivation-goal.cc
View file

@ -50,6 +50,11 @@
#define pivot_root(new_root, put_old) (syscall(SYS_pivot_root, new_root, put_old))
#endif
#if __APPLE__
#include <spawn.h>
#include <sys/sysctl.h>
#endif
#include <pwd.h>
#include <grp.h>
@ -683,11 +688,7 @@ void DerivationGoal::tryToBuild()
}
void DerivationGoal::tryLocalBuild() {
bool buildLocally = buildMode != bmNormal || parsedDrv->willBuildLocally(worker.store);
/* Make sure that we are allowed to start a build. If this
derivation prefers to be done locally, do it even if
maxBuildJobs is 0. */
/* Make sure that we are allowed to start a build. */
if (!dynamic_cast<LocalStore *>(&worker.store)) {
throw Error(
"unable to build with a primary store that isn't a local store; "
@ -695,7 +696,7 @@ void DerivationGoal::tryLocalBuild() {
"\nhttps://nixos.org/nix/manual/#chap-distributed-builds");
}
unsigned int curBuilds = worker.getNrLocalBuilds();
if (curBuilds >= settings.maxBuildJobs && !(buildLocally && curBuilds == 0)) {
if (curBuilds >= settings.maxBuildJobs) {
worker.waitForBuildSlot(shared_from_this());
outputLocks.unlock();
return;
@ -1714,12 +1715,10 @@ void DerivationGoal::startBuilder()
userNamespaceSync.writeSide = -1;
});
pid_t tmp;
auto ss = tokenizeString<std::vector<std::string>>(readLine(builderOut.readSide.get()));
assert(ss.size() == 2);
usingUserNamespace = ss[0] == "1";
if (!string2Int<pid_t>(ss[1], tmp)) abort();
pid = tmp;
pid = string2Int<pid_t>(ss[1]).value();
if (usingUserNamespace) {
/* Set the UID/GID mapping of the builder's user namespace
@ -2877,7 +2876,31 @@ void DerivationGoal::runChild()
}
}
#if __APPLE__
posix_spawnattr_t attrp;
if (posix_spawnattr_init(&attrp))
throw SysError("failed to initialize builder");
if (posix_spawnattr_setflags(&attrp, POSIX_SPAWN_SETEXEC))
throw SysError("failed to initialize builder");
if (drv->platform == "aarch64-darwin") {
// Unset kern.curproc_arch_affinity so we can escape Rosetta
int affinity = 0;
sysctlbyname("kern.curproc_arch_affinity", NULL, NULL, &affinity, sizeof(affinity));
cpu_type_t cpu = CPU_TYPE_ARM64;
posix_spawnattr_setbinpref_np(&attrp, 1, &cpu, NULL);
} else if (drv->platform == "x86_64-darwin") {
cpu_type_t cpu = CPU_TYPE_X86_64;
posix_spawnattr_setbinpref_np(&attrp, 1, &cpu, NULL);
}
posix_spawn(NULL, builder, NULL, &attrp, stringsToCharPtrs(args).data(), stringsToCharPtrs(envStrs).data());
#else
execve(builder, stringsToCharPtrs(args).data(), stringsToCharPtrs(envStrs).data());
#endif
throw SysError("executing '%1%'", drv->builder);

54
src/libstore/crypto.cc
View file

@ -2,21 +2,19 @@
#include "util.hh"
#include "globals.hh"
#if HAVE_SODIUM
#include <sodium.h>
#endif
namespace nix {
static std::pair<std::string, std::string> split(const string & s)
static std::pair<std::string_view, std::string_view> split(std::string_view s)
{
size_t colon = s.find(':');
if (colon == std::string::npos || colon == 0)
return {"", ""};
return {std::string(s, 0, colon), std::string(s, colon + 1)};
return {s.substr(0, colon), s.substr(colon + 1)};
}
Key::Key(const string & s)
Key::Key(std::string_view s)
{
auto ss = split(s);
@ -29,62 +27,57 @@ Key::Key(const string & s)
key = base64Decode(key);
}
SecretKey::SecretKey(const string & s)
std::string Key::to_string() const
{
return name + ":" + base64Encode(key);
}
SecretKey::SecretKey(std::string_view s)
: Key(s)
{
#if HAVE_SODIUM
if (key.size() != crypto_sign_SECRETKEYBYTES)
throw Error("secret key is not valid");
#endif
}
#if !HAVE_SODIUM
[[noreturn]] static void noSodium()
std::string SecretKey::signDetached(std::string_view data) const
{
throw Error("Nix was not compiled with libsodium, required for signed binary cache support");
}
#endif
std::string SecretKey::signDetached(const std::string & data) const
{
#if HAVE_SODIUM
unsigned char sig[crypto_sign_BYTES];
unsigned long long sigLen;
crypto_sign_detached(sig, &sigLen, (unsigned char *) data.data(), data.size(),
(unsigned char *) key.data());
return name + ":" + base64Encode(std::string((char *) sig, sigLen));
#else
noSodium();
#endif
}
PublicKey SecretKey::toPublicKey() const
{
#if HAVE_SODIUM
unsigned char pk[crypto_sign_PUBLICKEYBYTES];
crypto_sign_ed25519_sk_to_pk(pk, (unsigned char *) key.data());
return PublicKey(name, std::string((char *) pk, crypto_sign_PUBLICKEYBYTES));
#else
noSodium();
#endif
}
PublicKey::PublicKey(const string & s)
SecretKey SecretKey::generate(std::string_view name)
{
unsigned char pk[crypto_sign_PUBLICKEYBYTES];
unsigned char sk[crypto_sign_SECRETKEYBYTES];
if (crypto_sign_keypair(pk, sk) != 0)
throw Error("key generation failed");
return SecretKey(name, std::string((char *) sk, crypto_sign_SECRETKEYBYTES));
}
PublicKey::PublicKey(std::string_view s)
: Key(s)
{
#if HAVE_SODIUM
if (key.size() != crypto_sign_PUBLICKEYBYTES)
throw Error("public key is not valid");
#endif
}
bool verifyDetached(const std::string & data, const std::string & sig,
const PublicKeys & publicKeys)
{
#if HAVE_SODIUM
auto ss = split(sig);
auto key = publicKeys.find(ss.first);
auto key = publicKeys.find(std::string(ss.first));
if (key == publicKeys.end()) return false;
auto sig2 = base64Decode(ss.second);
@ -94,9 +87,6 @@ bool verifyDetached(const std::string & data, const std::string & sig,
return crypto_sign_verify_detached((unsigned char *) sig2.data(),
(unsigned char *) data.data(), data.size(),
(unsigned char *) key->second.key.data()) == 0;
#else
noSodium();
#endif
}
PublicKeys getDefaultPublicKeys()

24
src/libstore/crypto.hh
View file

@ -13,32 +13,40 @@ struct Key
/* Construct Key from a string in the format
‘<name>:<key-in-base64>’. */
Key(const std::string & s);
Key(std::string_view s);
std::string to_string() const;
protected:
Key(const std::string & name, const std::string & key)
: name(name), key(key) { }
Key(std::string_view name, std::string && key)
: name(name), key(std::move(key)) { }
};
struct PublicKey;
struct SecretKey : Key
{
SecretKey(const std::string & s);
SecretKey(std::string_view s);
/* Return a detached signature of the given string. */
std::string signDetached(const std::string & s) const;
std::string signDetached(std::string_view s) const;
PublicKey toPublicKey() const;
static SecretKey generate(std::string_view name);
private:
SecretKey(std::string_view name, std::string && key)
: Key(name, std::move(key)) { }
};
struct PublicKey : Key
{
PublicKey(const std::string & data);
PublicKey(std::string_view data);
private:
PublicKey(const std::string & name, const std::string & key)
: Key(name, key) { }
PublicKey(std::string_view name, std::string && key)
: Key(name, std::move(key)) { }
friend struct SecretKey;
};

2
src/libstore/filetransfer.hh
View file

@ -63,7 +63,7 @@ struct FileTransferRequest
std::string mimeType;
std::function<void(std::string_view data)> dataCallback;
FileTransferRequest(const std::string & uri)
FileTransferRequest(std::string_view uri)
: uri(uri), parentAct(getCurActivity()) { }
std::string verb()

28
src/libstore/globals.cc
View file

@ -131,6 +131,28 @@ StringSet Settings::getDefaultSystemFeatures()
return features;
}
StringSet Settings::getDefaultExtraPlatforms()
{
if (std::string{SYSTEM} == "x86_64-linux" && !isWSL1())
return StringSet{"i686-linux"};
#if __APPLE__
// Rosetta 2 emulation layer can run x86_64 binaries on aarch64
// machines. Note that we can’t force processes from executing
// x86_64 in aarch64 environments or vice versa since they can
// always exec with their own binary preferences.
else if (pathExists("/Library/Apple/System/Library/LaunchDaemons/com.apple.oahd.plist")) {
if (std::string{SYSTEM} == "x86_64-darwin")
return StringSet{"aarch64-darwin"};
else if (std::string{SYSTEM} == "aarch64-darwin")
return StringSet{"x86_64-darwin"};
else
return StringSet{};
}
#endif
else
return StringSet{};
}
bool Settings::isExperimentalFeatureEnabled(const std::string & name)
{
auto & f = experimentalFeatures.get();
@ -206,9 +228,13 @@ template<> void BaseSetting<SandboxMode>::convertToArg(Args & args, const std::s
void MaxBuildJobsSetting::set(const std::string & str, bool append)
{
if (str == "auto") value = std::max(1U, std::thread::hardware_concurrency());
else if (!string2Int(str, value))
else {
if (auto n = string2Int<decltype(value)>(str))
value = *n;
else
throw UsageError("configuration setting '%s' should be 'auto' or an integer", name);
}
}
void initPlugins()

4
src/libstore/globals.hh
View file

@ -34,6 +34,8 @@ class Settings : public Config {
StringSet getDefaultSystemFeatures();
StringSet getDefaultExtraPlatforms();
bool isWSL1();
public:
@ -545,7 +547,7 @@ public:
Setting<StringSet> extraPlatforms{
this,
std::string{SYSTEM} == "x86_64-linux" && !isWSL1() ? StringSet{"i686-linux"} : StringSet{},
getDefaultExtraPlatforms(),
"extra-platforms",
R"(
Platforms other than the native one which this machine is capable of

29
src/libstore/local-store.cc
View file

@ -66,8 +66,10 @@ int getSchema(Path schemaPath)
int curSchema = 0;
if (pathExists(schemaPath)) {
string s = readFile(schemaPath);
if (!string2Int(s, curSchema))
auto n = string2Int<int>(s);
if (!n)
throw Error("'%1%' is corrupt", schemaPath);
curSchema = *n;
}
return curSchema;
}
@ -736,11 +738,19 @@ void LocalStore::queryPathInfoUncached(const StorePath & path,
Callback<std::shared_ptr<const ValidPathInfo>> callback) noexcept
{
try {
callback(retrySQLite<std::shared_ptr<ValidPathInfo>>([&]() {
callback(retrySQLite<std::shared_ptr<const ValidPathInfo>>([&]() {
auto state(_state.lock());
return queryPathInfoInternal(*state, path);
}));
} catch (...) { callback.rethrow(); }
}
std::shared_ptr<const ValidPathInfo> LocalStore::queryPathInfoInternal(State & state, const StorePath & path)
{
/* Get the path info. */
auto useQueryPathInfo(state->stmts->QueryPathInfo.use()(printStorePath(path)));
auto useQueryPathInfo(state.stmts->QueryPathInfo.use()(printStorePath(path)));
if (!useQueryPathInfo.next())
return std::shared_ptr<ValidPathInfo>();
@ -760,7 +770,7 @@ void LocalStore::queryPathInfoUncached(const StorePath & path,
info->registrationTime = useQueryPathInfo.getInt(2);
auto s = (const char *) sqlite3_column_text(state->stmts->QueryPathInfo, 3);
auto s = (const char *) sqlite3_column_text(state.stmts->QueryPathInfo, 3);
if (s) info->deriver = parseStorePath(s);
/* Note that narSize = NULL yields 0. */
@ -768,22 +778,19 @@ void LocalStore::queryPathInfoUncached(const StorePath & path,
info->ultimate = useQueryPathInfo.getInt(5) == 1;
s = (const char *) sqlite3_column_text(state->stmts->QueryPathInfo, 6);
s = (const char *) sqlite3_column_text(state.stmts->QueryPathInfo, 6);
if (s) info->sigs = tokenizeString<StringSet>(s, " ");
s = (const char *) sqlite3_column_text(state->stmts->QueryPathInfo, 7);
s = (const char *) sqlite3_column_text(state.stmts->QueryPathInfo, 7);
if (s) info->ca = parseContentAddressOpt(s);
/* Get the references. */
auto useQueryReferences(state->stmts->QueryReferences.use()(info->id));
auto useQueryReferences(state.stmts->QueryReferences.use()(info->id));
while (useQueryReferences.next())
info->references.insert(parseStorePath(useQueryReferences.getStr(0)));
return info;
}));
} catch (...) { callback.rethrow(); }
}
@ -1599,7 +1606,7 @@ void LocalStore::addSignatures(const StorePath & storePath, const StringSet & si
SQLiteTxn txn(state->db);
auto info = std::const_pointer_cast<ValidPathInfo>(std::shared_ptr<const ValidPathInfo>(queryPathInfo(storePath)));
auto info = std::const_pointer_cast<ValidPathInfo>(queryPathInfoInternal(*state, storePath));
info->sigs.insert(sigs.begin(), sigs.end());

6
src/libstore/local-store.hh
View file

@ -177,9 +177,7 @@ public:
void vacuumDB();
/* Repair the contents of the given path by redownloading it using
a substituter (if available). */
void repairPath(const StorePath & path);
void repairPath(const StorePath & path) override;
void addSignatures(const StorePath & storePath, const StringSet & sigs) override;
@ -214,6 +212,8 @@ private:
void verifyPath(const Path & path, const StringSet & store,
PathSet & done, StorePathSet & validPaths, RepairFlag repair, bool & errors);
std::shared_ptr<const ValidPathInfo> queryPathInfoInternal(State & state, const StorePath & path);
void updatePathInfo(State & state, const ValidPathInfo & info);
void upgradeStore6();

12
src/libstore/names.cc
View file

@ -80,16 +80,16 @@ string nextComponent(string::const_iterator & p,
static bool componentsLT(const string & c1, const string & c2)
{
int n1, n2;
bool c1Num = string2Int(c1, n1), c2Num = string2Int(c2, n2);
auto n1 = string2Int<int>(c1);
auto n2 = string2Int<int>(c2);
if (c1Num && c2Num) return n1 < n2;
else if (c1 == "" && c2Num) return true;
if (n1 && n2) return *n1 < *n2;
else if (c1 == "" && n2) return true;
else if (c1 == "pre" && c2 != "pre") return true;
else if (c2 == "pre") return false;
/* Assume that `2.3a' < `2.3.1'. */
else if (c2Num) return true;
else if (c1Num) return false;
else if (n2) return true;
else if (n1) return false;
else return c1 < c2;
}

8
src/libstore/nar-info.cc
View file

@ -46,14 +46,18 @@ NarInfo::NarInfo(const Store & store, const std::string & s, const std::string &
else if (name == "FileHash")
fileHash = parseHashField(value);
else if (name == "FileSize") {
if (!string2Int(value, fileSize)) throw corrupt();
auto n = string2Int<decltype(fileSize)>(value);
if (!n) throw corrupt();
fileSize = *n;
}
else if (name == "NarHash") {
narHash = parseHashField(value);
haveNarHash = true;
}
else if (name == "NarSize") {
if (!string2Int(value, narSize)) throw corrupt();
auto n = string2Int<decltype(narSize)>(value);
if (!n) throw corrupt();
narSize = *n;
}
else if (name == "References") {
auto refs = tokenizeString<Strings>(value, " ");

4
src/libstore/parsed-derivations.cc
View file

@ -101,6 +101,10 @@ bool ParsedDerivation::canBuildLocally(Store & localStore) const
&& !drv.isBuiltin())
return false;
if (settings.maxBuildJobs.get() == 0
&& !drv.isBuiltin())
return false;
for (auto & feature : getRequiredSystemFeatures())
if (!localStore.systemFeatures.get().count(feature)) return false;

11
src/libstore/profiles.cc
View file

@ -21,9 +21,8 @@ static std::optional<GenerationNumber> parseName(const string & profileName, con
string s = string(name, profileName.size() + 1);
string::size_type p = s.find("-link");
if (p == string::npos) return {};
unsigned int n;
if (string2Int(string(s, 0, p), n) && n >= 0)
return n;
if (auto n = string2Int<unsigned int>(s.substr(0, p)))
return *n;
else
return {};
}
@ -214,12 +213,12 @@ void deleteGenerationsOlderThan(const Path & profile, const string & timeSpec, b
{
time_t curTime = time(0);
string strDays = string(timeSpec, 0, timeSpec.size() - 1);
int days;
auto days = string2Int<int>(strDays);
if (!string2Int(strDays, days) || days < 1)
if (!days || *days < 1)
throw Error("invalid number of days specifier '%1%'", timeSpec);
time_t oldTime = curTime - days * 24 * 3600;
time_t oldTime = curTime - *days * 24 * 3600;
deleteGenerationsOlderThan(profile, oldTime, dryRun);
}

3
src/libstore/references.cc
View file

@ -88,9 +88,6 @@ PathSet scanForReferences(Sink & toTee,
TeeSink sink { refsSink, toTee };
std::map<string, Path> backMap;
/* For efficiency (and a higher hit rate), just search for the
hash part of the file name. (This assumes that all references
have the form `HASH-bla'). */
for (auto & i : refs) {
auto baseName = std::string(baseNameOf(i));
string::size_type pos = baseName.find('-');

13
src/libstore/store-api.cc
View file

@ -909,19 +909,20 @@ std::optional<ValidPathInfo> decodeValidPathInfo(const Store & store, std::istre
getline(str, s);
auto narHash = Hash::parseAny(s, htSHA256);
getline(str, s);
uint64_t narSize;
if (!string2Int(s, narSize)) throw Error("number expected");
hashGiven = { narHash, narSize };
auto narSize = string2Int<uint64_t>(s);
if (!narSize) throw Error("number expected");
hashGiven = { narHash, *narSize };
}
ValidPathInfo info(store.parseStorePath(path), hashGiven->first);
info.narSize = hashGiven->second;
std::string deriver;
getline(str, deriver);
if (deriver != "") info.deriver = store.parseStorePath(deriver);
string s; int n;
string s;
getline(str, s);
if (!string2Int(s, n)) throw Error("number expected");
while (n--) {
auto n = string2Int<int>(s);
if (!n) throw Error("number expected");
while ((*n)--) {
getline(str, s);
info.references.insert(store.parseStorePath(s));
}

5
src/libstore/store-api.hh
View file

@ -608,6 +608,11 @@ public:
virtual ref<FSAccessor> getFSAccessor()
{ unsupported("getFSAccessor"); }
/* Repair the contents of the given path by redownloading it using
a substituter (if available). */
virtual void repairPath(const StorePath & path)
{ unsupported("repairPath"); }
/* Add signatures to the specified store path. The signatures are
not verified. */
virtual void addSignatures(const StorePath & storePath, const StringSet & sigs)

56
src/libutil/args.hh
View file

@ -68,8 +68,12 @@ protected:
, arity(ArityAny)
{ }
template<class T>
Handler(T * dest)
Handler(std::string * dest)
: fun([=](std::vector<std::string> ss) { *dest = ss[0]; })
, arity(1)
{ }
Handler(std::optional<std::string> * dest)
: fun([=](std::vector<std::string> ss) { *dest = ss[0]; })
, arity(1)
{ }
@ -79,6 +83,14 @@ protected:
: fun([=](std::vector<std::string> ss) { *dest = val; })
, arity(0)
{ }
template<class I>
Handler(I * dest)
: fun([=](std::vector<std::string> ss) {
*dest = string2IntWithUnitPrefix<I>(ss[0]);
})
, arity(1)
{ }
};
/* Flags. */
@ -130,19 +142,6 @@ public:
/* Helper functions for constructing flags / positional
arguments. */
void mkFlag1(char shortName, const std::string & longName,
const std::string & label, const std::string & description,
std::function<void(std::string)> fun)
{
addFlag({
.longName = longName,
.shortName = shortName,
.description = description,
.labels = {label},
.handler = {[=](std::string s) { fun(s); }}
});
}
void mkFlag(char shortName, const std::string & name,
const std::string & description, bool * dest)
{
@ -161,33 +160,6 @@ public:
});
}
template<class I>
void mkIntFlag(char shortName, const std::string & longName,
const std::string & description, I * dest)
{
mkFlag<I>(shortName, longName, description, [=](I n) {
*dest = n;
});
}
template<class I>
void mkFlag(char shortName, const std::string & longName,
const std::string & description, std::function<void(I)> fun)
{
addFlag({
.longName = longName,
.shortName = shortName,
.description = description,
.labels = {"N"},
.handler = {[=](std::string s) {
I n;
if (!string2Int(s, n))
throw UsageError("flag '--%s' requires a integer argument", longName);
fun(n);
}}
});
}
void expectArgs(ExpectedArg && arg)
{
expectedArgs.emplace_back(std::move(arg));

4
src/libutil/config.cc
View file

@ -230,7 +230,9 @@ template<typename T>
void BaseSetting<T>::set(const std::string & str, bool append)
{
static_assert(std::is_integral<T>::value, "Integer required.");
if (!string2Int(str, value))
if (auto n = string2Int<T>(str))
value = *n;
else
throw UsageError("setting '%s' has invalid value '%s'", name, str);
}

26
src/libutil/tests/tests.cc
View file

@ -320,20 +320,15 @@ namespace nix {
* --------------------------------------------------------------------------*/
TEST(string2Float, emptyString) {
double n;
ASSERT_EQ(string2Float("", n), false);
ASSERT_EQ(string2Float<double>(""), std::nullopt);
}
TEST(string2Float, trivialConversions) {
double n;
ASSERT_EQ(string2Float("1.0", n), true);
ASSERT_EQ(n, 1.0);
ASSERT_EQ(string2Float<double>("1.0"), 1.0);
ASSERT_EQ(string2Float("0.0", n), true);
ASSERT_EQ(n, 0.0);
ASSERT_EQ(string2Float<double>("0.0"), 0.0);
ASSERT_EQ(string2Float("-100.25", n), true);
ASSERT_EQ(n, (-100.25));
ASSERT_EQ(string2Float<double>("-100.25"), -100.25);
}
/* ----------------------------------------------------------------------------
@ -341,20 +336,15 @@ namespace nix {
* --------------------------------------------------------------------------*/
TEST(string2Int, emptyString) {
double n;
ASSERT_EQ(string2Int("", n), false);
ASSERT_EQ(string2Int<int>(""), std::nullopt);
}
TEST(string2Int, trivialConversions) {
double n;
ASSERT_EQ(string2Int("1", n), true);
ASSERT_EQ(n, 1);
ASSERT_EQ(string2Int<int>("1"), 1);
ASSERT_EQ(string2Int("0", n), true);
ASSERT_EQ(n, 0);
ASSERT_EQ(string2Int<int>("0"), 0);
ASSERT_EQ(string2Int("-100", n), true);
ASSERT_EQ(n, (-100));
ASSERT_EQ(string2Int<int>("-100"), -100);
}
/* ----------------------------------------------------------------------------

40
src/libutil/util.hh
View file

@ -397,21 +397,49 @@ bool statusOk(int status);
/* Parse a string into an integer. */
template<class N> bool string2Int(const string & s, N & n)
template<class N>
std::optional<N> string2Int(const std::string & s)
{
if (string(s, 0, 1) == "-" && !std::numeric_limits<N>::is_signed)
return false;
if (s.substr(0, 1) == "-" && !std::numeric_limits<N>::is_signed)
return std::nullopt;
std::istringstream str(s);
N n;
str >> n;
return str && str.get() == EOF;
if (str && str.get() == EOF) return n;
return std::nullopt;
}
/* Like string2Int(), but support an optional suffix 'K', 'M', 'G' or
'T' denoting a binary unit prefix. */
template<class N>
N string2IntWithUnitPrefix(std::string s)
{
N multiplier = 1;
if (!s.empty()) {
char u = std::toupper(*s.rbegin());
if (std::isalpha(u)) {
if (u == 'K') multiplier = 1ULL << 10;
else if (u == 'M') multiplier = 1ULL << 20;
else if (u == 'G') multiplier = 1ULL << 30;
else if (u == 'T') multiplier = 1ULL << 40;
else throw UsageError("invalid unit specifier '%1%'", u);
s.resize(s.size() - 1);
}
}
if (auto n = string2Int<N>(s))
return *n * multiplier;
throw UsageError("'%s' is not an integer", s);
}
/* Parse a string into a float. */
template<class N> bool string2Float(const string & s, N & n)
template<class N>
std::optional<N> string2Float(const string & s)
{
std::istringstream str(s);
N n;
str >> n;
return str && str.get() == EOF;
if (str && str.get() == EOF) return n;
return std::nullopt;
}

19
src/nix-env/nix-env.cc
View file

@ -1250,11 +1250,10 @@ static void opSwitchGeneration(Globals & globals, Strings opFlags, Strings opArg
if (opArgs.size() != 1)
throw UsageError("exactly one argument expected");
GenerationNumber dstGen;
if (!string2Int(opArgs.front(), dstGen))
if (auto dstGen = string2Int<GenerationNumber>(opArgs.front()))
switchGeneration(globals, *dstGen);
else
throw UsageError("expected a generation number");
switchGeneration(globals, dstGen);
}
@ -1308,17 +1307,17 @@ static void opDeleteGenerations(Globals & globals, Strings opFlags, Strings opAr
if(opArgs.front().size() < 2)
throw Error("invalid number of generations ‘%1%’", opArgs.front());
string str_max = string(opArgs.front(), 1, opArgs.front().size());
GenerationNumber max;
if (!string2Int(str_max, max) || max == 0)
auto max = string2Int<GenerationNumber>(str_max);
if (!max || *max == 0)
throw Error("invalid number of generations to keep ‘%1%’", opArgs.front());
deleteGenerationsGreaterThan(globals.profile, max, globals.dryRun);
deleteGenerationsGreaterThan(globals.profile, *max, globals.dryRun);
} else {
std::set<GenerationNumber> gens;
for (auto & i : opArgs) {
GenerationNumber n;
if (!string2Int(i, n))
if (auto n = string2Int<GenerationNumber>(i))
gens.insert(*n);
else
throw UsageError("invalid generation number '%1%'", i);
gens.insert(n);
}
deleteGenerations(globals.profile, gens, globals.dryRun);
}

8
src/nix-env/user-env.cc
View file

@ -53,10 +53,12 @@ bool createUserEnv(EvalState & state, DrvInfos & elems,
output paths, and optionally the derivation path, as well
as the meta attributes. */
Path drvPath = keepDerivations ? i.queryDrvPath() : "";
DrvInfo::Outputs outputs = i.queryOutputs(true);
StringSet metaNames = i.queryMetaNames();
Value & v(*state.allocValue());
manifest.listElems()[n++] = &v;
state.mkAttrs(v, 16);
state.mkAttrs(v, 7 + outputs.size());
mkString(*state.allocAttr(v, state.sType), "derivation");
mkString(*state.allocAttr(v, state.sName), i.queryName());
@ -68,7 +70,6 @@ bool createUserEnv(EvalState & state, DrvInfos & elems,
mkString(*state.allocAttr(v, state.sDrvPath), i.queryDrvPath());
// Copy each output meant for installation.
DrvInfo::Outputs outputs = i.queryOutputs(true);
Value & vOutputs = *state.allocAttr(v, state.sOutputs);
state.mkList(vOutputs, outputs.size());
unsigned int m = 0;
@ -88,8 +89,7 @@ bool createUserEnv(EvalState & state, DrvInfos & elems,
// Copy the meta attributes.
Value & vMeta = *state.allocAttr(v, state.sMeta);
state.mkAttrs(vMeta, 16);
StringSet metaNames = i.queryMetaNames();
state.mkAttrs(vMeta, metaNames.size());
for (auto & j : metaNames) {
Value * v = i.queryMeta(j);
if (!v) continue;

232
src/nix-prefetch-url/nix-prefetch-url.cc
View file

@ -1,232 +0,0 @@
#include "hash.hh"
#include "shared.hh"
#include "filetransfer.hh"
#include "store-api.hh"
#include "eval.hh"
#include "eval-inline.hh"
#include "common-eval-args.hh"
#include "attr-path.hh"
#include "finally.hh"
#include "../nix/legacy.hh"
#include "progress-bar.hh"
#include "tarfile.hh"
#include <iostream>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
using namespace nix;
/* If ‘uri’ starts with ‘mirror://’, then resolve it using the list of
mirrors defined in Nixpkgs. */
string resolveMirrorUri(EvalState & state, string uri)
{
if (string(uri, 0, 9) != "mirror://") return uri;
string s(uri, 9);
auto p = s.find('/');
if (p == string::npos) throw Error("invalid mirror URI");
string mirrorName(s, 0, p);
Value vMirrors;
state.eval(state.parseExprFromString("import <nixpkgs/pkgs/build-support/fetchurl/mirrors.nix>", "."), vMirrors);
state.forceAttrs(vMirrors);
auto mirrorList = vMirrors.attrs->find(state.symbols.create(mirrorName));
if (mirrorList == vMirrors.attrs->end())
throw Error("unknown mirror name '%1%'", mirrorName);
state.forceList(*mirrorList->value);
if (mirrorList->value->listSize() < 1)
throw Error("mirror URI '%1%' did not expand to anything", uri);
string mirror = state.forceString(*mirrorList->value->listElems()[0]);
return mirror + (hasSuffix(mirror, "/") ? "" : "/") + string(s, p + 1);
}
static int main_nix_prefetch_url(int argc, char * * argv)
{
{
HashType ht = htSHA256;
std::vector<string> args;
bool printPath = getEnv("PRINT_PATH") == "1";
bool fromExpr = false;
string attrPath;
bool unpack = false;
bool executable = false;
string name;
struct MyArgs : LegacyArgs, MixEvalArgs
{
using LegacyArgs::LegacyArgs;
};
MyArgs myArgs(std::string(baseNameOf(argv[0])), [&](Strings::iterator & arg, const Strings::iterator & end) {
if (*arg == "--help")
showManPage("nix-prefetch-url");
else if (*arg == "--version")
printVersion("nix-prefetch-url");
else if (*arg == "--type") {
string s = getArg(*arg, arg, end);
ht = parseHashType(s);
}
else if (*arg == "--print-path")
printPath = true;
else if (*arg == "--attr" || *arg == "-A") {
fromExpr = true;
attrPath = getArg(*arg, arg, end);
}
else if (*arg == "--unpack")
unpack = true;
else if (*arg == "--executable")
executable = true;
else if (*arg == "--name")
name = getArg(*arg, arg, end);
else if (*arg != "" && arg->at(0) == '-')
return false;
else
args.push_back(*arg);
return true;
});
myArgs.parseCmdline(argvToStrings(argc, argv));
initPlugins();
if (args.size() > 2)
throw UsageError("too many arguments");
Finally f([]() { stopProgressBar(); });
if (isatty(STDERR_FILENO))
startProgressBar();
auto store = openStore();
auto state = std::make_unique<EvalState>(myArgs.searchPath, store);
Bindings & autoArgs = *myArgs.getAutoArgs(*state);
/* If -A is given, get the URI from the specified Nix
expression. */
string uri;
if (!fromExpr) {
if (args.empty())
throw UsageError("you must specify a URI");
uri = args[0];
} else {
Path path = resolveExprPath(lookupFileArg(*state, args.empty() ? "." : args[0]));
Value vRoot;
state->evalFile(path, vRoot);
Value & v(*findAlongAttrPath(*state, attrPath, autoArgs, vRoot).first);
state->forceAttrs(v);
/* Extract the URI. */
auto attr = v.attrs->find(state->symbols.create("urls"));
if (attr == v.attrs->end())
throw Error("attribute set does not contain a 'urls' attribute");
state->forceList(*attr->value);
if (attr->value->listSize() < 1)
throw Error("'urls' list is empty");
uri = state->forceString(*attr->value->listElems()[0]);
/* Extract the hash mode. */
attr = v.attrs->find(state->symbols.create("outputHashMode"));
if (attr == v.attrs->end())
printInfo("warning: this does not look like a fetchurl call");
else
unpack = state->forceString(*attr->value) == "recursive";
/* Extract the name. */
if (name.empty()) {
attr = v.attrs->find(state->symbols.create("name"));
if (attr != v.attrs->end())
name = state->forceString(*attr->value);
}
}
/* Figure out a name in the Nix store. */
if (name.empty())
name = baseNameOf(uri);
if (name.empty())
throw Error("cannot figure out file name for '%1%'", uri);
/* If an expected hash is given, the file may already exist in
the store. */
std::optional<Hash> expectedHash;
Hash hash(ht);
std::optional<StorePath> storePath;
if (args.size() == 2) {
expectedHash = Hash::parseAny(args[1], ht);
const auto recursive = unpack ? FileIngestionMethod::Recursive : FileIngestionMethod::Flat;
storePath = store->makeFixedOutputPath(recursive, *expectedHash, name);
if (store->isValidPath(*storePath))
hash = *expectedHash;
else
storePath.reset();
}
if (!storePath) {
auto actualUri = resolveMirrorUri(*state, uri);
AutoDelete tmpDir(createTempDir(), true);
Path tmpFile = (Path) tmpDir + "/tmp";
/* Download the file. */
{
auto mode = 0600;
if (executable)
mode = 0700;
AutoCloseFD fd = open(tmpFile.c_str(), O_WRONLY | O_CREAT | O_EXCL, mode);
if (!fd) throw SysError("creating temporary file '%s'", tmpFile);
FdSink sink(fd.get());
FileTransferRequest req(actualUri);
req.decompress = false;
getFileTransfer()->download(std::move(req), sink);
}
/* Optionally unpack the file. */
if (unpack) {
printInfo("unpacking...");
Path unpacked = (Path) tmpDir + "/unpacked";
createDirs(unpacked);
unpackTarfile(tmpFile, unpacked);
/* If the archive unpacks to a single file/directory, then use
that as the top-level. */
auto entries = readDirectory(unpacked);
if (entries.size() == 1)
tmpFile = unpacked + "/" + entries[0].name;
else
tmpFile = unpacked;
}
const auto method = unpack || executable ? FileIngestionMethod::Recursive : FileIngestionMethod::Flat;
auto info = store->addToStoreSlow(name, tmpFile, method, ht, expectedHash);
storePath = info.path;
assert(info.ca);
hash = getContentAddressHash(*info.ca);
}
stopProgressBar();
if (!printPath)
printInfo("path is '%s'", store->printStorePath(*storePath));
std::cout << printHash16or32(hash) << std::endl;
if (printPath)
std::cout << store->printStorePath(*storePath) << std::endl;
return 0;
}
}
static RegisterLegacyCommand r_nix_prefetch_url("nix-prefetch-url", main_nix_prefetch_url);

22
src/nix-store/nix-store.cc
View file

@ -19,10 +19,6 @@
#include <sys/stat.h>
#include <fcntl.h>
#if HAVE_SODIUM
#include <sodium.h>
#endif
namespace nix_store {
@ -761,7 +757,7 @@ static void opRepairPath(Strings opFlags, Strings opArgs)
throw UsageError("no flags expected");
for (auto & i : opArgs)
ensureLocalStore()->repairPath(store->followLinksToStorePath(i));
store->repairPath(store->followLinksToStorePath(i));
}
/* Optimise the disk space usage of the Nix store by hard-linking
@ -980,21 +976,11 @@ static void opGenerateBinaryCacheKey(Strings opFlags, Strings opArgs)
string secretKeyFile = *i++;
string publicKeyFile = *i++;
#if HAVE_SODIUM
if (sodium_init() == -1)
throw Error("could not initialise libsodium");
auto secretKey = SecretKey::generate(keyName);
unsigned char pk[crypto_sign_PUBLICKEYBYTES];
unsigned char sk[crypto_sign_SECRETKEYBYTES];
if (crypto_sign_keypair(pk, sk) != 0)
throw Error("key generation failed");
writeFile(publicKeyFile, keyName + ":" + base64Encode(string((char *) pk, crypto_sign_PUBLICKEYBYTES)));
writeFile(publicKeyFile, secretKey.toPublicKey().to_string());
umask(0077);
writeFile(secretKeyFile, keyName + ":" + base64Encode(string((char *) sk, crypto_sign_SECRETKEYBYTES)));
#else
throw Error("Nix was not compiled with libsodium, required for signed binary cache support");
#endif
writeFile(secretKeyFile, secretKey.to_string());
}

2
src/nix/add-to-store.cc
View file

@ -19,7 +19,7 @@ struct CmdAddToStore : MixDryRun, StoreCommand
addFlag({
.longName = "name",
.shortName = 'n',
.description = "name component of the store path",
.description = "Override the name component of the store path. It defaults to the base name of *path*.",
.labels = {"name"},
.handler = {&namePart},
});

6
src/nix/build.cc
View file

@ -19,7 +19,7 @@ struct CmdBuild : InstallablesCommand, MixDryRun, MixJSON, MixProfile
addFlag({
.longName = "out-link",
.shortName = 'o',
.description = "path of the symlink to the build result",
.description = "Use *path* as prefix for the symlinks to the build results. It defaults to `result`.",
.labels = {"path"},
.handler = {&outLink},
.completer = completePath
@ -27,13 +27,13 @@ struct CmdBuild : InstallablesCommand, MixDryRun, MixJSON, MixProfile
addFlag({
.longName = "no-link",
.description = "do not create a symlink to the build result",
.description = "Do not create symlinks to the build results.",
.handler = {&outLink, Path("")},
});
addFlag({
.longName = "rebuild",
.description = "rebuild an already built package and compare the result to the existing store paths",
.description = "Rebuild an already built package and compare the result to the existing store paths.",
.handler = {&buildMode, bmCheck},
});
}

4
src/nix/bundle.cc
View file

@ -16,7 +16,7 @@ struct CmdBundle : InstallableCommand
{
addFlag({
.longName = "bundler",
.description = "use custom bundler",
.description = fmt("Use a custom bundler instead of the default (`%s`).", bundler),
.labels = {"flake-url"},
.handler = {&bundler},
.completer = {[&](size_t, std::string_view prefix) {
@ -27,7 +27,7 @@ struct CmdBundle : InstallableCommand
addFlag({
.longName = "out-link",
.shortName = 'o',
.description = "path of the symlink to the build result",
.description = "Override the name of the symlink to the build result. It defaults to the base name of the app.",
.labels = {"path"},
.handler = {&outLink},
.completer = completePath

14
src/nix/command.cc
View file

@ -65,18 +65,18 @@ StorePathsCommand::StorePathsCommand(bool recursive)
if (recursive)
addFlag({
.longName = "no-recursive",
.description = "apply operation to specified paths only",
.description = "Apply operation to specified paths only.",
.handler = {&this->recursive, false},
});
else
addFlag({
.longName = "recursive",
.shortName = 'r',
.description = "apply operation to closure of the specified paths",
.description = "Apply operation to closure of the specified paths.",
.handler = {&this->recursive, true},
});
mkFlag(0, "all", "apply operation to the entire store", &all);
mkFlag(0, "all", "Apply the operation to every store path.", &all);
}
void StorePathsCommand::run(ref<Store> store)
@ -133,7 +133,7 @@ MixProfile::MixProfile()
{
addFlag({
.longName = "profile",
.description = "profile to update",
.description = "The profile to update.",
.labels = {"path"},
.handler = {&profile},
.completer = completePath
@ -190,14 +190,14 @@ MixEnvironment::MixEnvironment() : ignoreEnvironment(false)
addFlag({
.longName = "ignore-environment",
.shortName = 'i',
.description = "clear the entire environment (except those specified with --keep)",
.description = "Clear the entire environment (except those specified with `--keep`).",
.handler = {&ignoreEnvironment, true},
});
addFlag({
.longName = "keep",
.shortName = 'k',
.description = "keep specified environment variable",
.description = "Keep the environment variable *name*.",
.labels = {"name"},
.handler = {[&](std::string s) { keep.insert(s); }},
});
@ -205,7 +205,7 @@ MixEnvironment::MixEnvironment() : ignoreEnvironment(false)
addFlag({
.longName = "unset",
.shortName = 'u',
.description = "unset specified environment variable",
.description = "Unset the environment variable *name*.",
.labels = {"name"},
.handler = {[&](std::string s) { unset.insert(s); }},
});

4
src/nix/command.hh
View file

@ -13,6 +13,8 @@ namespace nix {
extern std::string programPath;
extern char * * savedArgv;
class EvalState;
struct Pos;
class Store;
@ -261,6 +263,8 @@ void completeFlakeRefWithFragment(
const Strings & defaultFlakeAttrPaths,
std::string_view prefix);
std::string showVersions(const std::set<std::string> & versions);
void printClosureDiff(
ref<Store> store,
const StorePath & beforePath,

8
src/nix/copy.cc
View file

@ -21,28 +21,28 @@ struct CmdCopy : StorePathsCommand
{
addFlag({
.longName = "from",
.description = "URI of the source Nix store",
.description = "URL of the source Nix store.",
.labels = {"store-uri"},
.handler = {&srcUri},
});
addFlag({
.longName = "to",
.description = "URI of the destination Nix store",
.description = "URL of the destination Nix store.",
.labels = {"store-uri"},
.handler = {&dstUri},
});
addFlag({
.longName = "no-check-sigs",
.description = "do not require that paths are signed by trusted keys",
.description = "Do not require that paths are signed by trusted keys.",
.handler = {&checkSigs, NoCheckSigs},
});
addFlag({
.longName = "substitute-on-destination",
.shortName = 's',
.description = "whether to try substitutes on the destination store (only supported by SSH)",
.description = "Whether to try substitutes on the destination store (only supported by SSH stores).",
.handler = {&substitute, Substitute},
});

82
src/nix-daemon/nix-daemon.cc → src/nix/daemon.cc
View file

@ -1,3 +1,4 @@
#include "command.hh"
#include "shared.hh"
#include "local-store.hh"
#include "remote-store.hh"
@ -150,7 +151,7 @@ static ref<Store> openUncachedStore()
}
static void daemonLoop(char * * argv)
static void daemonLoop()
{
if (chdir("/") == -1)
throw SysError("cannot change current directory");
@ -232,9 +233,9 @@ static void daemonLoop(char * * argv)
setSigChldAction(false);
// For debugging, stuff the pid into argv[1].
if (peer.pidKnown && argv[1]) {
if (peer.pidKnown && savedArgv[1]) {
string processName = std::to_string(peer.pid);
strncpy(argv[1], processName.c_str(), strlen(argv[1]));
strncpy(savedArgv[1], processName.c_str(), strlen(savedArgv[1]));
}
// Handle the connection.
@ -264,27 +265,8 @@ static void daemonLoop(char * * argv)
}
}
static int main_nix_daemon(int argc, char * * argv)
static void runDaemon(bool stdio)
{
{
auto stdio = false;
parseCmdLine(argc, argv, [&](Strings::iterator & arg, const Strings::iterator & end) {
if (*arg == "--daemon")
; // ignored for backwards compatibility
else if (*arg == "--help")
showManPage("nix-daemon");
else if (*arg == "--version")
printVersion("nix-daemon");
else if (*arg == "--stdio")
stdio = true;
else return false;
return true;
});
initPlugins();
if (stdio) {
if (auto store = openUncachedStore().dynamic_pointer_cast<RemoteStore>()) {
auto conn = store->openConnectionWrapper();
@ -311,23 +293,69 @@ static int main_nix_daemon(int argc, char * * argv)
if (res == -1)
throw SysError("splicing data from stdin to daemon socket");
else if (res == 0)
return 0;
return;
}
}
} else {
FdSource from(STDIN_FILENO);
FdSink to(STDOUT_FILENO);
/* Auth hook is empty because in this mode we blindly trust the
standard streams. Limitting access to thoses is explicitly
standard streams. Limiting access to those is explicitly
not `nix-daemon`'s responsibility. */
processConnection(openUncachedStore(), from, to, Trusted, NotRecursive, [&](Store & _){});
}
} else {
daemonLoop(argv);
} else
daemonLoop();
}
static int main_nix_daemon(int argc, char * * argv)
{
{
auto stdio = false;
parseCmdLine(argc, argv, [&](Strings::iterator & arg, const Strings::iterator & end) {
if (*arg == "--daemon")
; // ignored for backwards compatibility
else if (*arg == "--help")
showManPage("nix-daemon");
else if (*arg == "--version")
printVersion("nix-daemon");
else if (*arg == "--stdio")
stdio = true;
else return false;
return true;
});
initPlugins();
runDaemon(stdio);
return 0;
}
}
static RegisterLegacyCommand r_nix_daemon("nix-daemon", main_nix_daemon);
struct CmdDaemon : StoreCommand
{
std::string description() override
{
return "daemon to perform store operations on behalf of non-root clients";
}
Category category() override { return catUtility; }
std::string doc() override
{
return
#include "daemon.md"
;
}
void run(ref<Store> store) override
{
runDaemon(false);
}
};
static auto rCmdDaemon = registerCommand2<CmdDaemon>({"daemon"});

21
src/nix/daemon.md Normal file
View file

@ -0,0 +1,21 @@
R""(
# Example
* Run the daemon in the foreground:
```console
# nix daemon
```
# Description
This command runs the Nix daemon, which is a required component in
multi-user Nix installations. It performs build actions and other
operations on the Nix store on behalf of non-root users. Usually you
don't run the daemon directly; instead it's managed by a service
management framework such as `systemd`.
Note that this daemon does not fork into the background.
)""

16
src/nix/develop.cc
View file

@ -204,7 +204,7 @@ struct Common : InstallableCommand, MixProfile
{
addFlag({
.longName = "redirect",
.description = "redirect a store path to a mutable location",
.description = "Redirect a store path to a mutable location.",
.labels = {"installable", "outputs-dir"},
.handler = {[&](std::string installable, std::string outputsDir) {
redirects.push_back({installable, outputsDir});
@ -334,7 +334,7 @@ struct CmdDevelop : Common, MixEnvironment
addFlag({
.longName = "command",
.shortName = 'c',
.description = "command and arguments to be executed instead of an interactive shell",
.description = "Instead of starting an interactive shell, start the specified command and arguments.",
.labels = {"command", "args"},
.handler = {[&](std::vector<std::string> ss) {
if (ss.empty()) throw UsageError("--command requires at least one argument");
@ -344,38 +344,38 @@ struct CmdDevelop : Common, MixEnvironment
addFlag({
.longName = "phase",
.description = "phase to run (e.g. `build` or `configure`)",
.description = "The stdenv phase to run (e.g. `build` or `configure`).",
.labels = {"phase-name"},
.handler = {&phase},
});
addFlag({
.longName = "configure",
.description = "run the configure phase",
.description = "Run the `configure` phase.",
.handler = {&phase, {"configure"}},
});
addFlag({
.longName = "build",
.description = "run the build phase",
.description = "Run the `build` phase.",
.handler = {&phase, {"build"}},
});
addFlag({
.longName = "check",
.description = "run the check phase",
.description = "Run the `check` phase.",
.handler = {&phase, {"check"}},
});
addFlag({
.longName = "install",
.description = "run the install phase",
.description = "Run the `install` phase.",
.handler = {&phase, {"install"}},
});
addFlag({
.longName = "installcheck",
.description = "run the installcheck phase",
.description = "Run the `installcheck` phase.",
.handler = {&phase, {"installCheck"}},
});
}

6
src/nix/eval.cc
View file

@ -18,18 +18,18 @@ struct CmdEval : MixJSON, InstallableCommand
CmdEval()
{
mkFlag(0, "raw", "print strings unquoted", &raw);
mkFlag(0, "raw", "Print strings without quotes or escaping.", &raw);
addFlag({
.longName = "apply",
.description = "apply a function to each argument",
.description = "Apply the function *expr* to each argument.",
.labels = {"expr"},
.handler = {&apply},
});
addFlag({
.longName = "write-to",
.description = "write a string or attrset of strings to 'path'",
.description = "Write a string or attrset of strings to *path*.",
.labels = {"path"},
.handler = {&writeTo},
});

28
src/nix/flake-prefetch.md Normal file
View file

@ -0,0 +1,28 @@
R""(
# Examples
* Download a tarball and unpack it:
```console
# nix flake prefetch https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.5.tar.xz
Downloaded 'https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.5.tar.xz?narHash=sha256-3XYHZANT6AFBV0BqegkAZHbba6oeDkIUCDwbATLMhAY='
to '/nix/store/sl5vvk8mb4ma1sjyy03kwpvkz50hd22d-source' (hash
'sha256-3XYHZANT6AFBV0BqegkAZHbba6oeDkIUCDwbATLMhAY=').
```
* Download the `dwarffs` flake (looked up in the flake registry):
```console
# nix flake prefetch dwarffs --json
{"hash":"sha256-VHg3MYVgQ12LeRSU2PSoDeKlSPD8PYYEFxxwkVVDRd0="
,"storePath":"/nix/store/hang3792qwdmm2n0d9nsrs5n6bsws6kv-source"}
```
# Description
This command downloads the source tree denoted by flake reference
*flake-url*. Note that this does not need to be a flake (i.e. it does
not have to contain a `flake.nix` file).
)""

48
src/nix/flake.cc
View file

@ -222,7 +222,7 @@ struct CmdFlakeCheck : FlakeCommand
{
addFlag({
.longName = "no-build",
.description = "do not build checks",
.description = "Do not build checks.",
.handler = {&build, false}
});
}
@ -573,7 +573,7 @@ struct CmdFlakeInitCommon : virtual Args, EvalCommand
addFlag({
.longName = "template",
.shortName = 't',
.description = "the template to use",
.description = "The template to use.",
.labels = {"template"},
.handler = {&templateUrl},
.completer = {[&](size_t, std::string_view prefix) {
@ -717,7 +717,7 @@ struct CmdFlakeClone : FlakeCommand
addFlag({
.longName = "dest",
.shortName = 'f',
.description = "destination path",
.description = "Clone the flake to path *dest*.",
.labels = {"path"},
.handler = {&destDir}
});
@ -807,7 +807,7 @@ struct CmdFlakeShow : FlakeCommand
{
addFlag({
.longName = "legacy",
.description = "show the contents of the 'legacyPackages' output",
.description = "Show the contents of the `legacyPackages` output.",
.handler = {&showLegacy, true}
});
}
@ -960,6 +960,45 @@ struct CmdFlakeShow : FlakeCommand
}
};
struct CmdFlakePrefetch : FlakeCommand, MixJSON
{
CmdFlakePrefetch()
{
}
std::string description() override
{
return "download the source tree denoted by a flake reference into the Nix store";
}
std::string doc() override
{
return
#include "flake-prefetch.md"
;
}
void run(ref<Store> store) override
{
auto originalRef = getFlakeRef();
auto resolvedRef = originalRef.resolve(store);
auto [tree, lockedRef] = resolvedRef.fetchTree(store);
auto hash = store->queryPathInfo(tree.storePath)->narHash;
if (json) {
auto res = nlohmann::json::object();
res["storePath"] = store->printStorePath(tree.storePath);
res["hash"] = hash.to_string(SRI, true);
logger->cout(res.dump());
} else {
notice("Downloaded '%s' to '%s' (hash '%s').",
lockedRef.to_string(),
store->printStorePath(tree.storePath),
hash.to_string(SRI, true));
}
}
};
struct CmdFlake : NixMultiCommand
{
CmdFlake()
@ -973,6 +1012,7 @@ struct CmdFlake : NixMultiCommand
{"clone", []() { return make_ref<CmdFlakeClone>(); }},
{"archive", []() { return make_ref<CmdFlakeArchive>(); }},
{"show", []() { return make_ref<CmdFlakeShow>(); }},
{"prefetch", []() { return make_ref<CmdFlakePrefetch>(); }},
})
{
}

24
src/nix/hash.cc
View file

@ -19,15 +19,15 @@ struct CmdHashBase : Command
CmdHashBase(FileIngestionMethod mode) : mode(mode)
{
mkFlag(0, "sri", "print hash in SRI format", &base, SRI);
mkFlag(0, "base64", "print hash in base-64", &base, Base64);
mkFlag(0, "base32", "print hash in base-32 (Nix-specific)", &base, Base32);
mkFlag(0, "base16", "print hash in base-16", &base, Base16);
mkFlag(0, "sri", "Print the hash in SRI format.", &base, SRI);
mkFlag(0, "base64", "Print the hash in base-64 format.", &base, Base64);
mkFlag(0, "base32", "Print the hash in base-32 (Nix-specific) format.", &base, Base32);
mkFlag(0, "base16", "Print the hash in base-16 format.", &base, Base16);
addFlag(Flag::mkHashTypeFlag("type", &ht));
#if 0
mkFlag()
.longName("modulo")
.description("compute hash modulo specified string")
.description("Compute the hash modulo specified the string.")
.labels({"modulus"})
.dest(&modulus);
#endif
@ -40,15 +40,14 @@ struct CmdHashBase : Command
std::string description() override
{
const char* d;
switch (mode) {
case FileIngestionMethod::Flat:
d = "print cryptographic hash of a regular file";
break;
return "print cryptographic hash of a regular file";
case FileIngestionMethod::Recursive:
d = "print cryptographic hash of the NAR serialisation of a path";
return "print cryptographic hash of the NAR serialisation of a path";
default:
assert(false);
};
return d;
}
void run() override
@ -132,11 +131,6 @@ struct CmdHash : NixMultiCommand
command->second->prepare();
command->second->run();
}
void printHelp(const string & programName, std::ostream & out) override
{
MultiCommand::printHelp(programName, out);
}
};
static auto rCmdHash = registerCommand<CmdHash>("hash");

22
src/nix/installables.cc
View file

@ -60,37 +60,37 @@ MixFlakeOptions::MixFlakeOptions()
{
addFlag({
.longName = "recreate-lock-file",
.description = "recreate lock file from scratch",
.description = "Recreate the flake's lock file from scratch.",
.handler = {&lockFlags.recreateLockFile, true}
});
addFlag({
.longName = "no-update-lock-file",
.description = "do not allow any updates to the lock file",
.description = "Do not allow any updates to the flake's lock file.",
.handler = {&lockFlags.updateLockFile, false}
});
addFlag({
.longName = "no-write-lock-file",
.description = "do not write the newly generated lock file",
.description = "Do not write the flake's newly generated lock file.",
.handler = {&lockFlags.writeLockFile, false}
});
addFlag({
.longName = "no-registries",
.description = "don't use flake registries",
.description = "Don't allow lookups in the flake registries.",
.handler = {&lockFlags.useRegistries, false}
});
addFlag({
.longName = "commit-lock-file",
.description = "commit changes to the lock file",
.description = "Commit changes to the flake's lock file.",
.handler = {&lockFlags.commitLockFile, true}
});
addFlag({
.longName = "update-input",
.description = "update a specific flake input",
.description = "Update a specific flake input (ignoring its previous entry in the lock file).",
.labels = {"input-path"},
.handler = {[&](std::string s) {
lockFlags.inputUpdates.insert(flake::parseInputPath(s));
@ -103,7 +103,7 @@ MixFlakeOptions::MixFlakeOptions()
addFlag({
.longName = "override-input",
.description = "override a specific flake input (e.g. `dwarffs/nixpkgs`)",
.description = "Override a specific flake input (e.g. `dwarffs/nixpkgs`).",
.labels = {"input-path", "flake-url"},
.handler = {[&](std::string inputPath, std::string flakeRef) {
lockFlags.inputOverrides.insert_or_assign(
@ -114,7 +114,7 @@ MixFlakeOptions::MixFlakeOptions()
addFlag({
.longName = "inputs-from",
.description = "use the inputs of the specified flake as registry entries",
.description = "Use the inputs of the specified flake as registry entries.",
.labels = {"flake-url"},
.handler = {[&](std::string flakeRef) {
auto evalState = getEvalState();
@ -143,7 +143,7 @@ SourceExprCommand::SourceExprCommand()
addFlag({
.longName = "file",
.shortName = 'f',
.description = "evaluate *file* rather than the default",
.description = "Interpret installables as attribute paths relative to the Nix expression stored in *file*.",
.labels = {"file"},
.handler = {&file},
.completer = completePath
@ -151,14 +151,14 @@ SourceExprCommand::SourceExprCommand()
addFlag({
.longName = "expr",
.description = "evaluate attributes from *expr*",
.description = "Interpret installables as attribute paths relative to the Nix expression *expr*.",
.labels = {"expr"},
.handler = {&expr}
});
addFlag({
.longName = "derivation",
.description = "operate on the store derivation rather than its outputs",
.description = "Operate on the store derivation rather than its outputs.",
.handler = {&operateOn, OperateOn::Derivation},
});
}

19
src/nix/key-convert-secret-to-public.md Normal file
View file

@ -0,0 +1,19 @@
R""(
# Examples
* Convert a secret key to a public key:
```console
# echo cache.example.org-0:E7lAO+MsPwTFfPXsdPtW8GKui/5ho4KQHVcAGnX+Tti1V4dUxoVoqLyWJ4YESuZJwQ67GVIksDt47og+tPVUZw== \
| nix key convert-secret-to-public
cache.example.org-0:tVeHVMaFaKi8lieGBErmScEOuxlSJLA7eO6IPrT1VGc=
```
# Description
This command reads a Ed25519 secret key from standard input, and
writes the corresponding public key to standard output. For more
details, see [nix key generate-secret](./nix3-key-generate-secret.md).
)""

48
src/nix/key-generate-secret.md Normal file
View file

@ -0,0 +1,48 @@
R""(
# Examples
* Generate a new secret key:
```console
# nix key generate-secret --key-name cache.example.org-1 > ./secret-key
```
We can then use this key to sign the closure of the Hello package:
```console
# nix build nixpkgs#hello
# nix store sign --key-file ./secret-key --recursive ./result
```
Finally, we can verify the store paths using the corresponding
public key:
```
# nix store verify --trusted-public-keys $(nix key convert-secret-to-public < ./secret-key) ./result
```
# Description
This command generates a new Ed25519 secret key for signing store
paths and prints it on standard output. Use `nix key
convert-secret-to-public` to get the corresponding public key for
verifying signed store paths.
The mandatory argument `--key-name` specifies a key name (such as
`cache.example.org-1). It is used to look up keys on the client when
it verifies signatures. It can be anything, but it’s suggested to use
the host name of your cache (e.g. `cache.example.org`) with a suffix
denoting the number of the key (to be incremented every time you need
to revoke a key).
# Format
Both secret and public keys are represented as the key name followed
by a base-64 encoding of the Ed25519 key data, e.g.
```
cache.example.org-0:E7lAO+MsPwTFfPXsdPtW8GKui/5ho4KQHVcAGnX+Tti1V4dUxoVoqLyWJ4YESuZJwQ67GVIksDt47og+tPVUZw==
```
)""

1
src/nix/local.mk
View file

@ -12,7 +12,6 @@ nix_SOURCES := \
$(wildcard src/nix-daemon/*.cc) \
$(wildcard src/nix-env/*.cc) \
$(wildcard src/nix-instantiate/*.cc) \
$(wildcard src/nix-prefetch-url/*.cc) \
$(wildcard src/nix-store/*.cc) \
nix_CXXFLAGS += -I src/libutil -I src/libstore -I src/libfetchers -I src/libexpr -I src/libmain

6
src/nix/ls.cc
View file

@ -17,9 +17,9 @@ struct MixLs : virtual Args, MixJSON
MixLs()
{
mkFlag('R', "recursive", "list subdirectories recursively", &recursive);
mkFlag('l', "long", "show more file information", &verbose);
mkFlag('d', "directory", "show directories rather than their contents", &showDirectory);
mkFlag('R', "recursive", "List subdirectories recursively.", &recursive);
mkFlag('l', "long", "Show detailed file information.", &verbose);
mkFlag('d', "directory", "Show directories rather than their contents.", &showDirectory);
}
void listText(ref<FSAccessor> accessor)

19
src/nix/main.cc
View file

@ -52,6 +52,7 @@ static bool haveInternet()
}
std::string programPath;
char * * savedArgv;
struct NixArgs : virtual MultiCommand, virtual MixCommonArgs
{
@ -69,15 +70,15 @@ struct NixArgs : virtual MultiCommand, virtual MixCommonArgs
addFlag({
.longName = "help",
.description = "show usage information",
.description = "Show usage information.",
.handler = {[&]() { if (!completions) showHelpAndExit(); }},
});
addFlag({
.longName = "help-config",
.description = "show configuration options",
.description = "Show configuration settings.",
.handler = {[&]() {
std::cout << "The following configuration options are available:\n\n";
std::cout << "The following configuration settings are available:\n\n";
Table2 tbl;
std::map<std::string, Config::SettingInfo> settings;
globalConfig.getSettings(settings);
@ -91,25 +92,25 @@ struct NixArgs : virtual MultiCommand, virtual MixCommonArgs
addFlag({
.longName = "print-build-logs",
.shortName = 'L',
.description = "print full build logs on stderr",
.description = "Print full build logs on standard error.",
.handler = {[&]() {setLogFormat(LogFormat::barWithLogs); }},
});
addFlag({
.longName = "version",
.description = "show version information",
.description = "Show version information.",
.handler = {[&]() { if (!completions) printVersion(programName); }},
});
addFlag({
.longName = "no-net",
.description = "disable substituters and consider all previously downloaded files up-to-date",
.description = "Disable substituters and consider all previously downloaded files up-to-date.",
.handler = {[&]() { useNet = false; }},
});
addFlag({
.longName = "refresh",
.description = "consider all previously downloaded files out-of-date",
.description = "Consider all previously downloaded files out-of-date.",
.handler = {[&]() { refresh = true; }},
});
}
@ -129,7 +130,7 @@ struct NixArgs : virtual MultiCommand, virtual MixCommonArgs
{"make-content-addressable", {"store", "make-content-addressable"}},
{"optimise-store", {"store", "optimise"}},
{"ping-store", {"store", "ping"}},
{"sign-paths", {"store", "sign-paths"}},
{"sign-paths", {"store", "sign"}},
{"to-base16", {"hash", "to-base16"}},
{"to-base32", {"hash", "to-base32"}},
{"to-base64", {"hash", "to-base64"}},
@ -232,6 +233,8 @@ static auto rCmdHelp = registerCommand<CmdHelp>("help");
void mainWrapped(int argc, char * * argv)
{
savedArgv = argv;
/* The chroot helper needs to be run before any threads have been
started. */
if (argc > 0 && argv[0] == chrootHelperName) {

8
src/nix/path-info.cc
View file

@ -18,10 +18,10 @@ struct CmdPathInfo : StorePathsCommand, MixJSON
CmdPathInfo()
{
mkFlag('s', "size", "print size of the NAR dump of each path", &showSize);
mkFlag('S', "closure-size", "print sum size of the NAR dumps of the closure of each path", &showClosureSize);
mkFlag('h', "human-readable", "with -s and -S, print sizes like 1K 234M 5.67G etc.", &humanReadable);
mkFlag(0, "sigs", "show signatures", &showSigs);
mkFlag('s', "size", "Print the size of the NAR serialisation of each path.", &showSize);
mkFlag('S', "closure-size", "Print the sum of the sizes of the NAR serialisations of the closure of each path.", &showClosureSize);
mkFlag('h', "human-readable", "With `-s` and `-S`, print sizes in a human-friendly format such as `5.67G`.", &humanReadable);
mkFlag(0, "sigs", "Show signatures.", &showSigs);
}
std::string description() override

319
src/nix/prefetch.cc Normal file
View file

@ -0,0 +1,319 @@
#include "command.hh"
#include "common-args.hh"
#include "shared.hh"
#include "store-api.hh"
#include "filetransfer.hh"
#include "finally.hh"
#include "progress-bar.hh"
#include "tarfile.hh"
#include "attr-path.hh"
#include "eval-inline.hh"
#include "legacy.hh"
#include <nlohmann/json.hpp>
using namespace nix;
/* If ‘url’ starts with ‘mirror://’, then resolve it using the list of
mirrors defined in Nixpkgs. */
string resolveMirrorUrl(EvalState & state, string url)
{
if (url.substr(0, 9) != "mirror://") return url;
std::string s(url, 9);
auto p = s.find('/');
if (p == std::string::npos) throw Error("invalid mirror URL '%s'", url);
std::string mirrorName(s, 0, p);
Value vMirrors;
// FIXME: use nixpkgs flake
state.eval(state.parseExprFromString("import <nixpkgs/pkgs/build-support/fetchurl/mirrors.nix>", "."), vMirrors);
state.forceAttrs(vMirrors);
auto mirrorList = vMirrors.attrs->find(state.symbols.create(mirrorName));
if (mirrorList == vMirrors.attrs->end())
throw Error("unknown mirror name '%s'", mirrorName);
state.forceList(*mirrorList->value);
if (mirrorList->value->listSize() < 1)
throw Error("mirror URL '%s' did not expand to anything", url);
auto mirror = state.forceString(*mirrorList->value->listElems()[0]);
return mirror + (hasSuffix(mirror, "/") ? "" : "/") + string(s, p + 1);
}
std::tuple<StorePath, Hash> prefetchFile(
ref<Store> store,
std::string_view url,
std::optional<std::string> name,
HashType hashType,
std::optional<Hash> expectedHash,
bool unpack,
bool executable)
{
auto ingestionMethod = unpack || executable ? FileIngestionMethod::Recursive : FileIngestionMethod::Flat;
/* Figure out a name in the Nix store. */
if (!name) {
name = baseNameOf(url);
if (name->empty())
throw Error("cannot figure out file name for '%s'", url);
}
std::optional<StorePath> storePath;
std::optional<Hash> hash;
/* If an expected hash is given, the file may already exist in
the store. */
if (expectedHash) {
hashType = expectedHash->type;
storePath = store->makeFixedOutputPath(ingestionMethod, *expectedHash, *name);
if (store->isValidPath(*storePath))
hash = expectedHash;
else
storePath.reset();
}
if (!storePath) {
AutoDelete tmpDir(createTempDir(), true);
Path tmpFile = (Path) tmpDir + "/tmp";
/* Download the file. */
{
auto mode = 0600;
if (executable)
mode = 0700;
AutoCloseFD fd = open(tmpFile.c_str(), O_WRONLY | O_CREAT | O_EXCL, mode);
if (!fd) throw SysError("creating temporary file '%s'", tmpFile);
FdSink sink(fd.get());
FileTransferRequest req(url);
req.decompress = false;
getFileTransfer()->download(std::move(req), sink);
}
/* Optionally unpack the file. */
if (unpack) {
Activity act(*logger, lvlChatty, actUnknown,
fmt("unpacking '%s'", url));
Path unpacked = (Path) tmpDir + "/unpacked";
createDirs(unpacked);
unpackTarfile(tmpFile, unpacked);
/* If the archive unpacks to a single file/directory, then use
that as the top-level. */
auto entries = readDirectory(unpacked);
if (entries.size() == 1)
tmpFile = unpacked + "/" + entries[0].name;
else
tmpFile = unpacked;
}
Activity act(*logger, lvlChatty, actUnknown,
fmt("adding '%s' to the store", url));
auto info = store->addToStoreSlow(*name, tmpFile, ingestionMethod, hashType, expectedHash);
storePath = info.path;
assert(info.ca);
hash = getContentAddressHash(*info.ca);
}
return {storePath.value(), hash.value()};
}
static int main_nix_prefetch_url(int argc, char * * argv)
{
{
HashType ht = htSHA256;
std::vector<string> args;
bool printPath = getEnv("PRINT_PATH") == "1";
bool fromExpr = false;
string attrPath;
bool unpack = false;
bool executable = false;
std::optional<std::string> name;
struct MyArgs : LegacyArgs, MixEvalArgs
{
using LegacyArgs::LegacyArgs;
};
MyArgs myArgs(std::string(baseNameOf(argv[0])), [&](Strings::iterator & arg, const Strings::iterator & end) {
if (*arg == "--help")
showManPage("nix-prefetch-url");
else if (*arg == "--version")
printVersion("nix-prefetch-url");
else if (*arg == "--type") {
string s = getArg(*arg, arg, end);
ht = parseHashType(s);
}
else if (*arg == "--print-path")
printPath = true;
else if (*arg == "--attr" || *arg == "-A") {
fromExpr = true;
attrPath = getArg(*arg, arg, end);
}
else if (*arg == "--unpack")
unpack = true;
else if (*arg == "--executable")
executable = true;
else if (*arg == "--name")
name = getArg(*arg, arg, end);
else if (*arg != "" && arg->at(0) == '-')
return false;
else
args.push_back(*arg);
return true;
});
myArgs.parseCmdline(argvToStrings(argc, argv));
initPlugins();
if (args.size() > 2)
throw UsageError("too many arguments");
Finally f([]() { stopProgressBar(); });
if (isatty(STDERR_FILENO))
startProgressBar();
auto store = openStore();
auto state = std::make_unique<EvalState>(myArgs.searchPath, store);
Bindings & autoArgs = *myArgs.getAutoArgs(*state);
/* If -A is given, get the URL from the specified Nix
expression. */
string url;
if (!fromExpr) {
if (args.empty())
throw UsageError("you must specify a URL");
url = args[0];
} else {
Path path = resolveExprPath(lookupFileArg(*state, args.empty() ? "." : args[0]));
Value vRoot;
state->evalFile(path, vRoot);
Value & v(*findAlongAttrPath(*state, attrPath, autoArgs, vRoot).first);
state->forceAttrs(v);
/* Extract the URL. */
auto attr = v.attrs->find(state->symbols.create("urls"));
if (attr == v.attrs->end())
throw Error("attribute set does not contain a 'urls' attribute");
state->forceList(*attr->value);
if (attr->value->listSize() < 1)
throw Error("'urls' list is empty");
url = state->forceString(*attr->value->listElems()[0]);
/* Extract the hash mode. */
attr = v.attrs->find(state->symbols.create("outputHashMode"));
if (attr == v.attrs->end())
printInfo("warning: this does not look like a fetchurl call");
else
unpack = state->forceString(*attr->value) == "recursive";
/* Extract the name. */
if (!name) {
attr = v.attrs->find(state->symbols.create("name"));
if (attr != v.attrs->end())
name = state->forceString(*attr->value);
}
}
std::optional<Hash> expectedHash;
if (args.size() == 2)
expectedHash = Hash::parseAny(args[1], ht);
auto [storePath, hash] = prefetchFile(
store, resolveMirrorUrl(*state, url), name, ht, expectedHash, unpack, executable);
stopProgressBar();
if (!printPath)
printInfo("path is '%s'", store->printStorePath(storePath));
std::cout << printHash16or32(hash) << std::endl;
if (printPath)
std::cout << store->printStorePath(storePath) << std::endl;
return 0;
}
}
static RegisterLegacyCommand r_nix_prefetch_url("nix-prefetch-url", main_nix_prefetch_url);
struct CmdStorePrefetchFile : StoreCommand, MixJSON
{
std::string url;
bool executable = false;
std::optional<std::string> name;
HashType hashType = htSHA256;
std::optional<Hash> expectedHash;
CmdStorePrefetchFile()
{
addFlag({
.longName = "name",
.description = "Override the name component of the resulting store path. It defaults to the base name of *url*.",
.labels = {"name"},
.handler = {&name}
});
addFlag({
.longName = "expected-hash",
.description = "The expected hash of the file.",
.labels = {"hash"},
.handler = {[&](std::string s) {
expectedHash = Hash::parseAny(s, hashType);
}}
});
addFlag(Flag::mkHashTypeFlag("hash-type", &hashType));
addFlag({
.longName = "executable",
.description =
"Make the resulting file executable. Note that this causes the "
"resulting hash to be a NAR hash rather than a flat file hash.",
.handler = {&executable, true},
});
expectArg("url", &url);
}
Category category() override { return catUtility; }
std::string description() override
{
return "download a file into the Nix store";
}
std::string doc() override
{
return
#include "store-prefetch-file.md"
;
}
void run(ref<Store> store) override
{
auto [storePath, hash] = prefetchFile(store, url, name, hashType, expectedHash, false, executable);
if (json) {
auto res = nlohmann::json::object();
res["storePath"] = store->printStorePath(storePath);
res["hash"] = hash.to_string(SRI, true);
logger->cout(res.dump());
} else {
notice("Downloaded '%s' to '%s' (hash '%s').",
url,
store->printStorePath(storePath),
hash.to_string(SRI, true));
}
}
};
static auto rCmdStorePrefetchFile = registerCommand2<CmdStorePrefetchFile>({"store", "prefetch-file"});

26
src/nix/profile-history.md Normal file
View file

@ -0,0 +1,26 @@
R""(
# Examples
* Show the changes between each version of your default profile:
```console
# nix profile history
Version 508 -> 509:
flake:nixpkgs#legacyPackages.x86_64-linux.awscli: ∅ -> 1.17.13
Version 509 -> 510:
flake:nixpkgs#legacyPackages.x86_64-linux.awscli: 1.17.13 -> 1.18.211
```
# Description
This command shows what packages were added, removed or upgraded
between subsequent versions of a profile. It only shows top-level
packages, not dependencies; for that, use [`nix profile
diff-closures`](./nix3-profile-diff-closures.md).
The addition of a package to a profile is denoted by the string `∅ ->`
*version*, whereas the removal is denoted by *version* `-> ∅`.
)""

2
src/nix/profile-info.md → src/nix/profile-list.md
View file

@ -5,7 +5,7 @@ R""(
* Show what packages are installed in the default profile:
```console
# nix profile info
# nix profile list
0 flake:nixpkgs#legacyPackages.x86_64-linux.spotify github:NixOS/nixpkgs/c23db78bbd474c4d0c5c3c551877523b4a50db06#legacyPackages.x86_64-linux.spotify /nix/store/akpdsid105phbbvknjsdh7hl4v3fhjkr-spotify-1.1.46.916.g416cacf1
1 flake:nixpkgs#legacyPackages.x86_64-linux.zoom-us github:NixOS/nixpkgs/c23db78bbd474c4d0c5c3c551877523b4a50db06#legacyPackages.x86_64-linux.zoom-us /nix/store/89pmjmbih5qpi7accgacd17ybpgp4xfm-zoom-us-5.4.53350.1027
2 flake:blender-bin#defaultPackage.x86_64-linux github:edolstra/nix-warez/d09d7eea893dcb162e89bc67f6dc1ced14abfc27?dir=blender#defaultPackage.x86_64-linux /nix/store/zfgralhqjnam662kqsgq6isjw8lhrflz-blender-bin-2.91.0

125
src/nix/profile.cc
View file

@ -8,6 +8,7 @@
#include "flake/flakeref.hh"
#include "../nix-env/user-env.hh"
#include "profiles.hh"
#include "names.hh"
#include <nlohmann/json.hpp>
#include <regex>
@ -21,6 +22,13 @@ struct ProfileElementSource
FlakeRef resolvedRef;
std::string attrPath;
// FIXME: output names
bool operator < (const ProfileElementSource & other) const
{
return
std::pair(originalRef.to_string(), attrPath) <
std::pair(other.originalRef.to_string(), other.attrPath);
}
};
struct ProfileElement
@ -29,6 +37,29 @@ struct ProfileElement
std::optional<ProfileElementSource> source;
bool active = true;
// FIXME: priority
std::string describe() const
{
if (source)
return fmt("%s#%s", source->originalRef, source->attrPath);
StringSet names;
for (auto & path : storePaths)
names.insert(DrvName(path.name()).name);
return concatStringsSep(", ", names);
}
std::string versions() const
{
StringSet versions;
for (auto & path : storePaths)
versions.insert(DrvName(path.name()).version);
return showVersions(versions);
}
bool operator < (const ProfileElement & other) const
{
return std::tuple(describe(), storePaths) < std::tuple(other.describe(), other.storePaths);
}
};
struct ProfileManifest
@ -142,6 +173,46 @@ struct ProfileManifest
return std::move(info.path);
}
static void printDiff(const ProfileManifest & prev, const ProfileManifest & cur, std::string_view indent)
{
auto prevElems = prev.elements;
std::sort(prevElems.begin(), prevElems.end());
auto curElems = cur.elements;
std::sort(curElems.begin(), curElems.end());
auto i = prevElems.begin();
auto j = curElems.begin();
bool changes = false;
while (i != prevElems.end() || j != curElems.end()) {
if (j != curElems.end() && (i == prevElems.end() || i->describe() > j->describe())) {
std::cout << fmt("%s%s: ∅ -> %s\n", indent, j->describe(), j->versions());
changes = true;
++j;
}
else if (i != prevElems.end() && (j == curElems.end() || i->describe() < j->describe())) {
std::cout << fmt("%s%s: %s -> ∅\n", indent, i->describe(), i->versions());
changes = true;
++i;
}
else {
auto v1 = i->versions();
auto v2 = j->versions();
if (v1 != v2) {
std::cout << fmt("%s%s: %s -> %s\n", indent, i->describe(), v1, v2);
changes = true;
}
++i;
++j;
}
}
if (!changes)
std::cout << fmt("%sNo changes.\n", indent);
}
};
struct CmdProfileInstall : InstallablesCommand, MixDefaultProfile
@ -209,9 +280,8 @@ public:
std::vector<Matcher> res;
for (auto & s : _matchers) {
size_t n;
if (string2Int(s, n))
res.push_back(n);
if (auto n = string2Int<size_t>(s))
res.push_back(*n);
else if (store->isStorePath(s))
res.push_back(s);
else
@ -337,7 +407,7 @@ struct CmdProfileUpgrade : virtual SourceExprCommand, MixDefaultProfile, MixProf
}
};
struct CmdProfileInfo : virtual EvalCommand, virtual StoreCommand, MixDefaultProfile
struct CmdProfileList : virtual EvalCommand, virtual StoreCommand, MixDefaultProfile
{
std::string description() override
{
@ -347,7 +417,7 @@ struct CmdProfileInfo : virtual EvalCommand, virtual StoreCommand, MixDefaultPro
std::string doc() override
{
return
#include "profile-info.md"
#include "profile-list.md"
;
}
@ -402,6 +472,48 @@ struct CmdProfileDiffClosures : virtual StoreCommand, MixDefaultProfile
}
};
struct CmdProfileHistory : virtual StoreCommand, EvalCommand, MixDefaultProfile
{
std::string description() override
{
return "show all versions of a profile";
}
std::string doc() override
{
return
#include "profile-history.md"
;
}
void run(ref<Store> store) override
{
auto [gens, curGen] = findGenerations(*profile);
std::optional<std::pair<Generation, ProfileManifest>> prevGen;
bool first = true;
for (auto & gen : gens) {
ProfileManifest manifest(*getEvalState(), gen.path);
if (!first) std::cout << "\n";
first = false;
if (prevGen)
std::cout << fmt("Version %d -> %d:\n", prevGen->first.number, gen.number);
else
std::cout << fmt("Version %d:\n", gen.number);
ProfileManifest::printDiff(
prevGen ? prevGen->second : ProfileManifest(),
manifest,
" ");
prevGen = {gen, std::move(manifest)};
}
}
};
struct CmdProfile : NixMultiCommand
{
CmdProfile()
@ -409,8 +521,9 @@ struct CmdProfile : NixMultiCommand
{"install", []() { return make_ref<CmdProfileInstall>(); }},
{"remove", []() { return make_ref<CmdProfileRemove>(); }},
{"upgrade", []() { return make_ref<CmdProfileUpgrade>(); }},
{"info", []() { return make_ref<CmdProfileInfo>(); }},
{"list", []() { return make_ref<CmdProfileList>(); }},
{"diff-closures", []() { return make_ref<CmdProfileDiffClosures>(); }},
{"history", []() { return make_ref<CmdProfileHistory>(); }},
})
{ }

2
src/nix/run.cc
View file

@ -72,7 +72,7 @@ struct CmdShell : InstallablesCommand, RunCommon, MixEnvironment
addFlag({
.longName = "command",
.shortName = 'c',
.description = "command and arguments to be executed; defaults to '$SHELL'",
.description = "Command and arguments to be executed, defaulting to `$SHELL`",
.labels = {"command", "args"},
.handler = {[&](std::vector<std::string> ss) {
if (ss.empty()) throw UsageError("--command requires at least one argument");

2
src/nix/show-derivation.cc
View file

@ -19,7 +19,7 @@ struct CmdShowDerivation : InstallablesCommand
addFlag({
.longName = "recursive",
.shortName = 'r',
.description = "include the dependencies of the specified derivations",
.description = "Include the dependencies of the specified derivations.",
.handler = {&recursive, true}
});
}

95
src/nix/sigs.cc
View file

@ -16,7 +16,7 @@ struct CmdCopySigs : StorePathsCommand
addFlag({
.longName = "substituter",
.shortName = 's',
.description = "use signatures from specified store",
.description = "Use signatures from specified store.",
.labels = {"store-uri"},
.handler = {[&](std::string s) { substituterUris.push_back(s); }},
});
@ -92,16 +92,16 @@ struct CmdCopySigs : StorePathsCommand
static auto rCmdCopySigs = registerCommand2<CmdCopySigs>({"store", "copy-sigs"});
struct CmdSignPaths : StorePathsCommand
struct CmdSign : StorePathsCommand
{
Path secretKeyFile;
CmdSignPaths()
CmdSign()
{
addFlag({
.longName = "key-file",
.shortName = 'k',
.description = "file containing the secret signing key",
.description = "File containing the secret signing key.",
.labels = {"file"},
.handler = {&secretKeyFile},
.completer = completePath
@ -140,4 +140,89 @@ struct CmdSignPaths : StorePathsCommand
}
};
static auto rCmdSignPaths = registerCommand2<CmdSignPaths>({"store", "sign-paths"});
static auto rCmdSign = registerCommand2<CmdSign>({"store", "sign"});
struct CmdKeyGenerateSecret : Command
{
std::optional<std::string> keyName;
CmdKeyGenerateSecret()
{
addFlag({
.longName = "key-name",
.description = "Identifier of the key (e.g. `cache.example.org-1`).",
.labels = {"name"},
.handler = {&keyName},
});
}
std::string description() override
{
return "generate a secret key for signing store paths";
}
std::string doc() override
{
return
#include "key-generate-secret.md"
;
}
void run() override
{
if (!keyName)
throw UsageError("required argument '--key-name' is missing");
std::cout << SecretKey::generate(*keyName).to_string();
}
};
struct CmdKeyConvertSecretToPublic : Command
{
std::string description() override
{
return "generate a public key for verifying store paths from a secret key read from standard input";
}
std::string doc() override
{
return
#include "key-convert-secret-to-public.md"
;
}
void run() override
{
SecretKey secretKey(drainFD(STDIN_FILENO));
std::cout << secretKey.toPublicKey().to_string();
}
};
struct CmdKey : NixMultiCommand
{
CmdKey()
: MultiCommand({
{"generate-secret", []() { return make_ref<CmdKeyGenerateSecret>(); }},
{"convert-secret-to-public", []() { return make_ref<CmdKeyConvertSecretToPublic>(); }},
})
{
}
std::string description() override
{
return "generate and convert Nix signing keys";
}
Category category() override { return catUtility; }
void run() override
{
if (!command)
throw UsageError("'nix flake' requires a sub-command.");
settings.requireExperimentalFeature("flakes");
command->second->prepare();
command->second->run();
}
};
static auto rCmdKey = registerCommand<CmdKey>("key");

44
src/nix/store-delete.cc Normal file
View file

@ -0,0 +1,44 @@
#include "command.hh"
#include "common-args.hh"
#include "shared.hh"
#include "store-api.hh"
using namespace nix;
struct CmdStoreDelete : StorePathsCommand
{
GCOptions options { .action = GCOptions::gcDeleteSpecific };
CmdStoreDelete()
{
addFlag({
.longName = "ignore-liveness",
.description = "Do not check whether the paths are reachable from a root.",
.handler = {&options.ignoreLiveness, true}
});
}
std::string description() override
{
return "delete paths from the Nix store";
}
std::string doc() override
{
return
#include "store-delete.md"
;
}
void run(ref<Store> store, std::vector<StorePath> storePaths) override
{
for (auto & path : storePaths)
options.pathsToDelete.insert(path);
GCResults results;
PrintFreed freed(true, results);
store->collectGarbage(options, results);
}
};
static auto rCmdStoreDelete = registerCommand2<CmdStoreDelete>({"store", "delete"});

24
src/nix/store-delete.md Normal file
View file

@ -0,0 +1,24 @@
R""(
# Examples
* Delete a specific store path:
```console
# nix store delete /nix/store/yb5q57zxv6hgqql42d5r8b5k5mcq6kay-hello-2.10
```
# Description
This command deletes the store paths specified by *installables*. ,
but only if it is safe to do so; that is, when the path is not
reachable from a root of the garbage collector. This means that you
can only delete paths that would also be deleted by `nix store
gc`. Thus, `nix store delete` is a more targeted version of `nix store
gc`.
With the option `--ignore-liveness`, reachability from the roots is
ignored. However, the path still won't be deleted if there are other
paths in the store that refer to it (i.e., depend on it).
)""

43
src/nix/store-gc.cc Normal file
View file

@ -0,0 +1,43 @@
#include "command.hh"
#include "common-args.hh"
#include "shared.hh"
#include "store-api.hh"
using namespace nix;
struct CmdStoreGC : StoreCommand, MixDryRun
{
GCOptions options;
CmdStoreGC()
{
addFlag({
.longName = "max",
.description = "Stop after freeing *n* bytes of disk space.",
.labels = {"n"},
.handler = {&options.maxFreed}
});
}
std::string description() override
{
return "perform garbage collection on a Nix store";
}
std::string doc() override
{
return
#include "store-gc.md"
;
}
void run(ref<Store> store) override
{
options.action = dryRun ? GCOptions::gcReturnDead : GCOptions::gcDeleteDead;
GCResults results;
PrintFreed freed(options.action == GCOptions::gcDeleteDead, results);
store->collectGarbage(options, results);
}
};
static auto rCmdStoreGC = registerCommand2<CmdStoreGC>({"store", "gc"});

21
src/nix/store-gc.md Normal file
View file

@ -0,0 +1,21 @@
R""(
# Examples
* Delete unreachable paths in the Nix store:
```console
# nix store gc
```
* Delete up to 1 gigabyte of garbage:
```console
# nix store gc --max 1G
```
# Description
This command deletes unreachable paths in the Nix store.
)""

32
src/nix/store-prefetch-file.md Normal file
View file

@ -0,0 +1,32 @@
R""(
# Examples
* Download a file to the Nix store:
```console
# nix store prefetch-file https://releases.nixos.org/nix/nix-2.3.10/nix-2.3.10.tar.xz
Downloaded 'https://releases.nixos.org/nix/nix-2.3.10/nix-2.3.10.tar.xz' to
'/nix/store/vbdbi42hgnc4h7pyqzp6h2yf77kw93aw-source' (hash
'sha256-qKheVd5D0BervxMDbt+1hnTKE2aRWC8XCAwc0SeHt6s=').
```
* Download a file and get the SHA-512 hash:
```console
# nix store prefetch-file --json --hash-type sha512 \
https://releases.nixos.org/nix/nix-2.3.10/nix-2.3.10.tar.xz \
| jq -r .hash
sha512-6XJxfym0TNH9knxeH4ZOvns6wElFy3uahunl2hJgovACCMEMXSy42s69zWVyGJALXTI+86tpDJGlIcAySEKBbA==
```
# Description
This command downloads the file *url* to the Nix store. It prints out
the resulting store path and the cryptographic hash of the contents of
the file.
The name component of the store path defaults to the last component of
*url*, but this can be overriden using `--name`.
)""

27
src/nix/store-repair.cc Normal file
View file

@ -0,0 +1,27 @@
#include "command.hh"
#include "store-api.hh"
using namespace nix;
struct CmdStoreRepair : StorePathsCommand
{
std::string description() override
{
return "repair store paths";
}
std::string doc() override
{
return
#include "store-repair.md"
;
}
void run(ref<Store> store, std::vector<StorePath> storePaths) override
{
for (auto & path : storePaths)
store->repairPath(path);
}
};
static auto rStoreRepair = registerCommand2<CmdStoreRepair>({"store", "repair"});

32
src/nix/store-repair.md Normal file
View file

@ -0,0 +1,32 @@
R""(
# Examples
* Repair a store path, after determining that it is corrupt:
```console
# nix store verify /nix/store/yb5q57zxv6hgqql42d5r8b5k5mcq6kay-hello-2.10
path '/nix/store/yb5q57zxv6hgqql42d5r8b5k5mcq6kay-hello-2.10' was
modified! expected hash
'sha256:1hd5vnh6xjk388gdk841vflicy8qv7qzj2hb7xlyh8lpb43j921l', got
'sha256:1a25lf78x5wi6pfkrxalf0n13kdaca0bqmjqnp7wfjza2qz5ssgl'
# nix store repair /nix/store/yb5q57zxv6hgqql42d5r8b5k5mcq6kay-hello-2.10
```
# Description
This command attempts to "repair" the store paths specified by
*installables* by redownloading them using the available
substituters. If no substitutes are available, then repair is not
possible.
> **Warning**
>
> During repair, there is a very small time window during which the old
> path (if it exists) is moved out of the way and replaced with the new
> path. If repair is interrupted in between, then the system may be left
> in a broken state (e.g., if the path contains a critical system
> component like the GNU C Library).
)""

4
src/nix/upgrade-nix.cc
View file

@ -19,14 +19,14 @@ struct CmdUpgradeNix : MixDryRun, StoreCommand
addFlag({
.longName = "profile",
.shortName = 'p',
.description = "the Nix profile to upgrade",
.description = "The path to the Nix profile to upgrade.",
.labels = {"profile-dir"},
.handler = {&profileDir}
});
addFlag({
.longName = "nix-store-paths-url",
.description = "URL of the file that contains the store paths of the latest Nix release",
.description = "The URL of the file that contains the store paths of the latest Nix release.",
.labels = {"url"},
.handler = {&storePathsUrl}
});

16
src/nix/verify.cc
View file

@ -18,16 +18,24 @@ struct CmdVerify : StorePathsCommand
CmdVerify()
{
mkFlag(0, "no-contents", "do not verify the contents of each store path", &noContents);
mkFlag(0, "no-trust", "do not verify whether each store path is trusted", &noTrust);
mkFlag(0, "no-contents", "Do not verify the contents of each store path.", &noContents);
mkFlag(0, "no-trust", "Do not verify whether each store path is trusted.", &noTrust);
addFlag({
.longName = "substituter",
.shortName = 's',
.description = "use signatures from specified store",
.description = "Use signatures from the specified store.",
.labels = {"store-uri"},
.handler = {[&](std::string s) { substituterUris.push_back(s); }}
});
mkIntFlag('n', "sigs-needed", "require that each path has at least N valid signatures", &sigsNeeded);
addFlag({
.longName = "sigs-needed",
.shortName = 'n',
.description = "Require that each path has at least *n* valid signatures.",
.labels = {"n"},
.handler = {&sigsNeeded}
});
}
std::string description() override

2
src/nix/why-depends.cc
View file

@ -40,7 +40,7 @@ struct CmdWhyDepends : SourceExprCommand
addFlag({
.longName = "all",
.shortName = 'a',
.description = "show all edges in the dependency graph leading from 'package' to 'dependency', rather than just a shortest path",
.description = "Show all edges in the dependency graph leading from *package* to *dependency*, rather than just a shortest path.",
.handler = {&all, true},
});
}

16
tests/binary-cache.sh
View file

@ -130,20 +130,18 @@ grep -q "copying path.*input-0" $TEST_ROOT/log
grep -q "copying path.*top" $TEST_ROOT/log
if [ -n "$HAVE_SODIUM" ]; then
# Create a signed binary cache.
clearCache
clearCacheCache
declare -a res=($(nix-store --generate-binary-cache-key test.nixos.org-1 $TEST_ROOT/sk1 $TEST_ROOT/pk1 ))
publicKey="$(cat $TEST_ROOT/pk1)"
nix key generate-secret --key-name test.nixos.org-1 > $TEST_ROOT/sk1
publicKey=$(nix key convert-secret-to-public < $TEST_ROOT/sk1)
res=($(nix-store --generate-binary-cache-key test.nixos.org-1 $TEST_ROOT/sk2 $TEST_ROOT/pk2))
badKey="$(cat $TEST_ROOT/pk2)"
nix key generate-secret --key-name test.nixos.org-1 > $TEST_ROOT/sk2
badKey=$(nix key convert-secret-to-public < $TEST_ROOT/sk2)
res=($(nix-store --generate-binary-cache-key foo.nixos.org-1 $TEST_ROOT/sk3 $TEST_ROOT/pk3))
otherKey="$(cat $TEST_ROOT/pk3)"
nix key generate-secret --key-name foo.nixos.org-1 > $TEST_ROOT/sk3
otherKey=$(nix key convert-secret-to-public < $TEST_ROOT/sk3)
_NIX_FORCE_HTTP= nix copy --to file://$cacheDir?secret-key=$TEST_ROOT/sk1 $outPath
@ -186,8 +184,6 @@ clearCacheCache
nix-store -r $outPath --substituters "file://$cacheDir2 file://$cacheDir" --trusted-public-keys "$publicKey"
fi # HAVE_LIBSODIUM
unset _NIX_FORCE_HTTP

3
tests/common.sh.in
View file

@ -34,7 +34,6 @@ coreutils=@coreutils@
export dot=@dot@
export SHELL="@bash@"
export PAGER=cat
export HAVE_SODIUM="@HAVE_SODIUM@"
export busybox="@sandbox_shell@"
export version=@PACKAGE_VERSION@
@ -74,7 +73,7 @@ startDaemon() {
# Start the daemon, wait for the socket to appear. !!!
# ‘nix-daemon’ should have an option to fork into the background.
rm -f $NIX_STATE_DIR/daemon-socket/socket
nix-daemon &
nix daemon &
for ((i = 0; i < 30; i++)); do
if [ -e $NIX_DAEMON_SOCKET_PATH ]; then break; fi
sleep 1

6
tests/flakes.sh
View file

@ -276,18 +276,18 @@ git -C $flake3Dir commit -m 'Add lockfile'
# Test whether registry caching works.
nix registry list --flake-registry file://$registry | grep -q flake3
mv $registry $registry.tmp
nix-store --gc
nix store gc
nix registry list --flake-registry file://$registry --refresh | grep -q flake3
mv $registry.tmp $registry
# Test whether flakes are registered as GC roots for offline use.
# FIXME: use tarballs rather than git.
rm -rf $TEST_HOME/.cache
nix-store --gc # get rid of copies in the store to ensure they get fetched to our git cache
nix store gc # get rid of copies in the store to ensure they get fetched to our git cache
_NIX_FORCE_HTTP=1 nix build -o $TEST_ROOT/result git+file://$flake2Dir#bar
mv $flake1Dir $flake1Dir.tmp
mv $flake2Dir $flake2Dir.tmp
nix-store --gc
nix store gc
_NIX_FORCE_HTTP=1 nix build -o $TEST_ROOT/result git+file://$flake2Dir#bar
_NIX_FORCE_HTTP=1 nix build -o $TEST_ROOT/result git+file://$flake2Dir#bar --refresh
mv $flake1Dir.tmp $flake1Dir

2
tests/multiple-outputs.sh
View file

@ -58,7 +58,7 @@ outPath2=$(nix-build $(nix-instantiate multiple-outputs.nix -A a.second) --no-ou
# Delete one of the outputs and rebuild it. This will cause a hash
# rewrite.
nix-store --delete $TEST_ROOT/result-second --ignore-liveness
nix store delete $TEST_ROOT/result-second --ignore-liveness
nix-build multiple-outputs.nix -A a.all -o $TEST_ROOT/result
[ "$(cat $TEST_ROOT/result-second/file)" = "second" ]
[ "$(cat $TEST_ROOT/result-second/link/file)" = "first" ]

8
tests/signing.sh
View file

@ -47,8 +47,8 @@ expect 2 nix store verify -r $outPath2 --sigs-needed 1
expect 2 nix store verify -r $outPath2 --sigs-needed 1 --trusted-public-keys $pk1
# Test "nix store sign-paths".
nix store sign-paths --key-file $TEST_ROOT/sk1 $outPath2
# Test "nix store sign".
nix store sign --key-file $TEST_ROOT/sk1 $outPath2
nix store verify -r $outPath2 --sigs-needed 1 --trusted-public-keys $pk1
@ -63,7 +63,7 @@ nix store verify $outPathCA
nix store verify $outPathCA --sigs-needed 1000
# Check that signing a content-addressed path doesn't overflow validSigs
nix store sign-paths --key-file $TEST_ROOT/sk1 $outPathCA
nix store sign --key-file $TEST_ROOT/sk1 $outPathCA
nix store verify -r $outPathCA --sigs-needed 1000 --trusted-public-keys $pk1
# Copy to a binary cache.
@ -76,7 +76,7 @@ info=$(nix path-info --store file://$cacheDir --json $outPath2)
(! [[ $info =~ 'cache2.example.org' ]])
# Verify that adding a signature to a path in a binary cache works.
nix store sign-paths --store file://$cacheDir --key-file $TEST_ROOT/sk2 $outPath2
nix store sign --store file://$cacheDir --key-file $TEST_ROOT/sk2 $outPath2
info=$(nix path-info --store file://$cacheDir --json $outPath2)
[[ $info =~ 'cache1.example.org' ]]
[[ $info =~ 'cache2.example.org' ]]