Commit graph

9882 commits

Author SHA1 Message Date
jade 85f282ef57 Merge changes Id0e651e4,I0ed20da8,I76bd6d22,I5d8ffb7b into main
* changes:
  store: fix null reference from DerivationGoal::waiteeDone
  libmain: fix UB in verbosity assignment
  build: make UBSan work :)
  libexpr: fix accessing uninitialized values and fix pure-eval docs
2024-06-19 03:31:47 +00:00
Qyriad b338435b75 Merge "refactor lambda formals handling" into main 2024-06-19 03:13:46 +00:00
jade c897fba787 store: fix null reference from DerivationGoal::waiteeDone
This happened during a PathSubstitutionGoal of a .drv file:

substitution of '/tmp/jade/nix-test/ca/eval-store/store/1lj7lsq5y0f25mfbnq6d3zd0bw5ay33n-dependencies-input-2.drv'

What happened here is that since PathSubstitutionGoal is not a
DerivationGoal, in production builds, the UB was not caught, since it
would early-exit from failing a dynamic_cast to DerivationGoal * on the
very next line, but before the null reference was ever used.

This was nonetheless UB. The fix should be to just rearrange the two
lines; I don't think there is a further bug there, since *substituting a
.drv* **necessarily** means you cannot have the representation of
the derivation as would be necessary for drv to not be null there.

Test failure:

++(eval-store.sh:12) _RR_TRACE_DIR=/home/jade/.local/share/rr rr record -- nix build -f dependencies.nix --eval-store /tmp/jade/nix-test/ca/eval-store/eval-store -o /tmp/jade/nix-test/ca/eval-store/result
don't know how to build these paths:
  /tmp/jade/nix-test/ca/eval-store/store/6y51mf0p57ggipgab6hdjabbvplzsicq-dependencies-top.drv
copying 1 paths...
copying path '/tmp/jade/nix-test/ca/eval-store/store/8027afyvqb87y1sf5xhdkqsflqn1ziy8-dependencies.builder0.sh' to 'local'...
copying 1 paths...
copying path '/tmp/jade/nix-test/ca/eval-store/store/7r5pqyncvfgrryf9gzy1z56z3xigi61x-builder-dependencies-input-0.sh' to 'local'...
copying 1 paths...
copying path '/tmp/jade/nix-test/ca/eval-store/store/nhmgm87zlqy3ks96dxrn7l37b72azi99-builder-dependencies-input-1.sh' to 'local'...
copying 1 paths...
copying path '/tmp/jade/nix-test/ca/eval-store/store/nq4qa2j6y8ajqazlfq6h46ck637my1n6-builder-dependencies-input-2.sh' to 'local'...
copying 1 paths...
copying path '/tmp/jade/nix-test/ca/eval-store/store/6vh0vna9l5afck01y7iaks3hm9ikwqyj-builder-fod-input.sh' to 'local'...
building '/tmp/jade/nix-test/ca/eval-store/store/gy91pqymf2nc5v7ld1bad94xpwxdi25s-dependencies-input-0.drv'...
building '/tmp/jade/nix-test/ca/eval-store/store/w7wlkjx97ivmnrymkac5av3nyp94hzvq-dependencies-input-1.drv'...
../src/libstore/build/derivation-goal.cc:1556:22: runtime error: reference binding to null pointer of type 'Derivation'
    0 0x734ba59a6886 in nix::DerivationGoal::waiteeDone(std::shared_ptr<nix::Goal>, nix::Goal::ExitCode) /home/jade/lix/lix2/build/src/libstore/build/derivation-goal.cc:1556:12
    1 0x734ba59c0962 in nix::Goal::amDone(nix::Goal::ExitCode, std::optional<nix::Error>) /home/jade/lix/lix2/build/src/libstore/build/goal.cc:95:25
    2 0x734ba5a1c44a in nix::PathSubstitutionGoal::done(nix::Goal::ExitCode, nix::BuildResult::Status, std::optional<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>>) /home/jade/lix/lix2/build/src/libstore/build/substitution-goal.cc:38:5
    3 0x734ba5a1b454 in nix::PathSubstitutionGoal::init() /home/jade/lix/lix2/build/src/libstore/build/substitution-goal.cc:56:9
    4 0x734ba5a2a6c6 in nix::Worker::run(std::set<std::shared_ptr<nix::Goal>, nix::CompareGoalPtrs, std::allocator<std::shared_ptr<nix::Goal>>> const&) /home/jade/lix/lix2/build/src/libstore/build/worker.cc:320:23
    5 0x734ba59b93d8 in nix::Store::buildPathsWithResults(std::vector<nix::DerivedPath, std::allocator<nix::DerivedPath>> const&, nix::BuildMode, std::shared_ptr<nix::Store>) /home/jade/lix/lix2/build/src/libstore/build/entry-points.cc:60:12
    6 0x734ba663c107 in nix::Installable::build2(nix::ref<nix::Store>, nix::ref<nix::Store>, nix::Realise, std::vector<nix::ref<nix::Installable>, std::allocator<nix::ref<nix::Installable>>> const&, nix::BuildMode) /home/jade/lix/lix2/build/src/libcmd/installables.cc:637:36

Change-Id: Id0e651e480bebf6356733b01bc639e9bb59c7bd0
2024-06-18 19:26:54 -07:00
jade f2fff1faa4 libmain: fix UB in verbosity assignment
This was generating an out-of-range verbosity value. We should just
process it as an int and then convert to verbosity with a clamping
function, which trivially avoids any domain type violations.

Change-Id: I0ed20da8e1496a1225ff3008b76827d99265d404
2024-06-18 19:26:54 -07:00
jade 1eef1927b6 libexpr: fix accessing uninitialized values and fix pure-eval docs
We got UBSan working on Lix, so we of course immediately found a bug and
some definitely nonsense behaviour.

Accessing `pureEval` or `restrictEval` from a default setting value is
nonsense, since they would never be actually set by the time that value
is set so they are not going to do anything. The configuration is not
applied in an initializer (and even if it were, it's not going to be in
the right order).

After looking into *that*, we hunted down what actually was applying
these, since clearly this code did not do anything. The EvalState
constructor should have a "search path added and removed here :)" sign
on it, because that's where it is done. We added an explicit
initialization of the optional in there because it was otherwise unclear
why pureEval also has the search path to allowed paths setup code run.

We then realized that the `pureEval` documentation was *also* bogus, and
we rewrote it. In so doing, we realized that we forgot to file a bug to
make `builtins.storePath` work in pure eval mode, so we filed one of
those: lix-project/lix#402

Yaks have been thoroughly shorn.

UBSan report:

    ../src/libexpr/eval-settings.cc:66:10: runtime error: member call on address 0x752fa9a13060 which does not point to an object of type 'nix::BaseSetting<b
    ool>'
    0x752fa9a13060: note: object has invalid vptr
     00 00 00 00  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  00 00 00 00
                  ^~~~~~~~~~~~~~~~~~~~~~~
                  invalid vptr
        0 0x752fa95106a6 in nix::EvalSettings::getDefaultNixPath[abi:cxx11]() /home/jade/lix/lix2/build/src/libexpr/eval-settings.cc:66:10
        1 0x752fa950e420 in nix::EvalSettings::EvalSettings() /home/jade/lix/lix2/build/src/libexpr/eval-settings.hh:36:15
        2 0x752fa9469f1f in __cxx_global_var_init.50 /home/jade/lix/lix2/build/src/libexpr/eval-settings.cc:98:14
        3 0x752fa9469f1f in _GLOBAL__sub_I_eval_settings.cc /home/jade/lix/lix2/build/src/libexpr/eval-settings.cc
        4 0x752fabbd308d in call_init (/nix/store/k7zgvzp2r31zkg9xqgjim7mbknryv6bs-glibc-2.39-52/lib/ld-linux-x86-64.so.2+0x508d) (BuildId: a5b8228edc9f16078ac3c894af964eeb990ecb4c)
        5 0x752fabbd317b in _dl_init (/nix/store/k7zgvzp2r31zkg9xqgjim7mbknryv6bs-glibc-2.39-52/lib/ld-linux-x86-64.so.2+0x517b) (BuildId: a5b8228edc9f16078ac3c894af964eeb990ecb4c)
        6 0x752fabbe9c2f in _dl_start_user (/nix/store/k7zgvzp2r31zkg9xqgjim7mbknryv6bs-glibc-2.39-52/lib/ld-linux-x86-64.so.2+0x1bc2f) (BuildId: a5b8228edc9f16078ac3c894af964eeb990ecb4c)

Change-Id: I5d8ffb7bfbe24b6584020ac74eed93d9f2e6d111
2024-06-18 19:25:35 -07:00
Qyriad 54d2c189ae refactor lambda formals handling
Change-Id: Iebffd5436109da270ee870670a20f5ee7db9a204
2024-06-19 00:57:56 +00:00
eldritch horrors a960576f58 libutil: BrotliDecompression{Sink -> Source}
Change-Id: I9579dd08f7bd0f927bde9d3128515b0cee15f320
2024-06-19 00:54:06 +00:00
eldritch horrors 0b9a72524a filetransfer: {up,down}load -> transfer
even the transfer function is not all that necessary since there aren't
that many users, but we'll keep it for now. we could've kept both names
but we also kind of want to use `download` for something else very soon

Change-Id: I005e403ee59de433e139e37aa2045c26a523ccbf
2024-06-18 23:58:25 +00:00
jade 66a9fbb7ff libstore: fix queryValidPaths concurrency
The lock usage was obviously wrong so it was entirely serialized. This
has the predicted speedups, the only question is whether it is sound
because it's exposing a bunch of new code to actual concurrency.

I did audit all the stores' queryPathInfoUncached implementations and
they all look *intended* to be thread safe, but whether that is actually
sound or not: lol lmao. I am highly confident in the s3 one because it
is calling s3 sdk methods that are thread safe and has no actual state.

Others are using Pool and look to be *supposed* to be thread safe, but
unsure if they actually are.

Change-Id: I0369152a510e878b5ac56c9ac956a98d48cd5fef
2024-06-18 23:29:08 +00:00
jade b9b1bbd22f diff-closures: fix a use after free
Found by looking for interesting asan reports from the test suite.

What happened here is that name got overwritten, but it was what
actually held the backing memory for the thing it got overwritten by,
which was a by-reference value coming out of std::regex.

Due to absurd reasons I cannot seem to use a string_view iterator here,
so I just copy the string with a longer lifetime instead. idk lol

==3796364==ERROR: AddressSanitizer: heap-use-after-free on address 0x503000014c61 at pc 0x74843523bf1d bp 0x7ffc68351330 sp 0x7ffc68350af0
READ of size 3 at 0x503000014c61 thread T0
    0 0x74843523bf1c in __asan_memcpy (/nix/store/mzhqknx2mc94jdz4n320hn1lml86398y-clang-wrapper-17.0.6/resource-root/lib/linux/libclang_rt.asan-x86_64.so+0x159f1c)
    1 0x6403cf6cbff4 in std::char_traits<char>::copy(char*, char const*, unsigned long) /nix/store/14c6s4xzhy14i2b05s00rjns2j93gzz4-gcc-13.2.0/include/c++/13.2.0/bits/char_traits.h:445:33
    <...>
    7 0x6403cf6cbff4 in std::__cxx11::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>>>::str() const /nix/store/14c6s4xzhy14i2b05s00rjns2j93gzz4-gcc-13.2.0/include/c++/13.2.0/bits/regex.h:966:6
    8 0x6403cf6cbff4 in std::__cxx11::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>>>::operator std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>() const /nix/store/14c6s4xzhy14i2b05s00rjns2j93gzz4-gcc-13.2.0/include/c++/13.2.0/bits/regex.h:955:16
    9 0x6403cf6cbff4 in nix::getClosureInfo[abi:cxx11](nix::ref<nix::Store>, nix::StorePath const&) /home/jade/lix/lix2/build/src/nix/diff-closures.cc:37:26
    10 0x6403cf6cd70c in nix::printClosureDiff(nix::ref<nix::Store>, nix::StorePath const&, nix::StorePath const&, std::basic_string_view<char, std::char_traits<char>>) /home/jade/lix/lix2/build/src/nix/diff-closures.cc:54:25
    11 0x6403cf873331 in CmdProfileDiffClosures::run(nix::ref<nix::Store>) /home/jade/lix/lix2/build/src/nix/profile.cc:479:17
    <...>

0x503000014c61 is located 17 bytes inside of 21-byte region [0x503000014c50,0x503000014c65)
freed by thread T0 here:
    0 0x748435250470 in operator delete(void*) (/nix/store/mzhqknx2mc94jdz4n320hn1lml86398y-clang-wrapper-17.0.6/resource-root/lib/linux/libclang_rt.asan-x86_64.so+0x16e470)
    <...>
    6 0x6403cf6cbda2 in std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>::~basic_string() /nix/store/14c6s4xzhy14i2b05s00rjns2j93gzz4-gcc-13.2.0/include/c++/13.2.0/bits/basic_string.h:792:9
    7 0x6403cf6cbda2 in nix::getClosureInfo[abi:cxx11](nix::ref<nix::Store>, nix::StorePath const&) /home/jade/lix/lix2/build/src/nix/diff-closures.cc:36:13
    8 0x6403cf6cd70c in nix::printClosureDiff(nix::ref<nix::Store>, nix::StorePath const&, nix::StorePath const&, std::basic_string_view<char, std::char_traits<char>>) /home/jade/lix/lix2/build/src/nix/diff-closures.cc:54:25
    <...>

previously allocated by thread T0 here:
    0 0x74843524fa38 in operator new(unsigned long) (/nix/store/mzhqknx2mc94jdz4n320hn1lml86398y-clang-wrapper-17.0.6/resource-root/lib/linux/libclang_rt.asan-x86_64.so+0x16da38)
    <...>
    9 0x6403cf6cb68c in std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>::basic_string<std::basic_string_view<char, std::char_traits<char>>, void>(std::basic_string_view<char, std::char_traits<char>> const&, std::allocator<char> const&) /nix/store/14c6s4xzhy14i2b05s00rjns2j93gzz4-gcc-13.2.0/include/c++/13.2.0/bits/basic_string.h:784:4
    10 0x6403cf6cb68c in nix::getClosureInfo[abi:cxx11](nix::ref<nix::Store>, nix::StorePath const&) /home/jade/lix/lix2/build/src/nix/diff-closures.cc:33:21
    11 0x6403cf6cd70c in nix::printClosureDiff(nix::ref<nix::Store>, nix::StorePath const&, nix::StorePath const&, std::basic_string_view<char, std::char_traits<char>>) /home/jade/lix/lix2/build/src/nix/diff-closures.cc:54:25
    12 0x6403cf873331 in CmdProfileDiffClosures::run(nix::ref<nix::Store>) /home/jade/lix/lix2/build/src/nix/profile.cc:479:17
    <...>

Change-Id: I9c408cf2a3d3155f9f7b2ad4848ee6c741331db0
2024-06-18 15:11:49 -07:00
jade 8e6661cce7 store-api: fix/clarify capture lifetimes in copyPaths
This seems to fix a use of stack after return.

Change-Id: If690a6defb9a3225684685132cf78b227e271447
2024-06-18 15:11:49 -07:00
jade 9185ab7bf0 libstore: work around aws sdk log spam at debug level
aws-sdk-cpp spams logs about sending TLS data in the otherwise rather
helpful debug logs. I've filed a PR upstream to stop it, but for now we
can just fix their verbosity ourselves.

Upstream-PR: https://github.com/aws/aws-sdk-cpp/pull/3003
Change-Id: I0c41a50d5f5958106836d6345843f4b05b9c8981
2024-06-18 15:11:49 -07:00
jade 02ca60809d s3: delete obsolete ifdefs
The versions checked for are so old that we can just drop support.

Change-Id: Ib9cf136d1cb9a4a91a6613102c4fd15e1190363b
2024-06-18 15:11:49 -07:00
jade 3626738b9b libutil: tidy Sync and fix its move constructor
There was a previously-unused move constructor that just called abort,
which makes no sense since it ought to just be `= delete` if you don't
want one (commit history says it was Eelco doing an optimistic
performance optimisation in 2016, so it probably would not pass review
today).

However, a Lock has some great reasons to be moved! You might need to
unlock it early, for instance, or give it to someone else. So we change
the move constructor to instead hollow out the moved-from object and
make it unusable.

Change-Id: Iff2a4c2f7ebd0a558c4866d4dfe526bc8558bed7
2024-06-18 15:11:31 -07:00
alois31 aa00a5a8c9 libfetchers: represent unfetched submodules consistently
Unfetched submodules are included as empty directories in archives, so they end
up as such in the store when fetched in clean mode. Make sure the same happens
in dirty mode too. Fortunately, they are already correctly represented in the
ls-files output, so we just need to make sure to include the empty directory in
our filter.

Fixes: https://github.com/NixOS/nix/issues/6247
Change-Id: I60d06ff360cfa305d081b920838c893c06da801c
2024-06-18 00:54:51 +00:00
jade ce2b48aa41 Merge changes from topic "protocol" into main
* changes:
  libstore client: remove remaining dead code
  libstore: refuse to serialise ancient protocols
  libstore client: remove support for <2.3 clients
  libstore daemon: remove very old protocol support (<2.3)
  Delete old ValidPathInfo test, fix UnkeyedValidPathInfo
  Set up minimum protocol version
2024-06-17 22:08:48 +00:00
eldritch horrors bcb774688f libexpr: add expr memory management
with the prepatory work done this mostly means turning plain pointers
into unique_ptrs, with all the associated churn that necessitates. we
might want to change some of these to box_ptrs at some point as well,
but that would be a semantic change that isn't fully appropriate yet.

Change-Id: I0c238c118617420650432f4ed45569baa3e3f413
2024-06-17 19:46:44 +00:00
eldritch horrors ad5366c2ad libexpr: pass Exprs as references, not pointers
almost all places where Exprs are passed as pointers expect the pointers
to be non-null. pass them as references to encode this constraint in the
type system as well (and also communicate that Exprs must not be freed).

Change-Id: Ia98f166fec3c23151f906e13acb4a0954a5980a2
2024-06-17 19:46:44 +00:00
eldritch horrors b8f49a8eaf libexpr: store ExprConcatStrings elements as direct vector
storing a pointer only adds an unnecessary indirection at runtime.

Change-Id: If06dd05effdf1ccb0df0873580f50c775608925d
2024-06-17 19:46:44 +00:00
eldritch horrors dad8bc679e libexpr: don't immediately throw parser errors
now that destructors are hooked up we want to give the C skeleton every
real chance to actually run them. since bison does not call destructors
on values that have been passed to semantic actions even when an action
causes an abort we will also have to delete some things manually still.

Change-Id: Ia22bdaa9e969b74e17a6c496e35e6c2d86b7d750
2024-06-17 19:46:44 +00:00
eldritch horrors 9592a9fd57 libexpr: hook up bison destructors for state objects
this doesn't help much yet since the state objects themselves also leak
all memory they are given, but it is a first necessary step to properly
managing parser memory. notably we have to clear $$ when returning from
the parser since even the start symbol is subject to automatic deletion
by the bison-generated parser before returning control to the call site

Change-Id: I80245b0c747308e80923e7f18ce4e1a4898f93b0
2024-06-17 19:46:44 +00:00
Qyriad 19a93dd025 mini-refactor "lambda.name or anonymous lambda" logic
Change-Id: I08d39c4ad5b967de526c0d5c5e6299256c7967f3
2024-06-17 15:13:18 +00:00
Qyriad 010d93393e repl: implement tab completing :colon commands
This uses a minor hack in which we check the rl_line_buffer global
variable to workaround editline not including the colon in its
completion callback.

Fixes #361

Change-Id: Id159d209c537443ef5e37a975982e8e12ce1f486
2024-06-17 13:08:02 +00:00
jade c1f2733dd6 libstore client: remove remaining dead code
Change-Id: I1764b3878439ff7b20ff64bd4efcf03070bb0e5e
2024-06-16 19:15:08 -07:00
jade c22a7f50cb libstore: refuse to serialise ancient protocols
We don't want to deal with these at all, let's stop doing so.

(marking this one as the fix commit since its immediate predecessors
aren't the complete fix)
Fixes: lix-project/lix#325

Change-Id: Ieea1b0b8ac0f903d1e24e5b3e63cfe12eeec119d
2024-06-16 19:15:08 -07:00
jade 985ce8a865 libstore client: remove support for <2.3 clients
Change-Id: I71c2e8ca644b6187e0084f35e82f3316c9d425b0
2024-06-16 19:15:06 -07:00
jade 7b1d38bc4f libstore daemon: remove very old protocol support (<2.3)
Change-Id: Ic05f478a659c199a66fe78ae05d357d317ac41b0
2024-06-16 19:13:51 -07:00
jade a17282fc66 Set up minimum protocol version
Change-Id: Ibb931109a8328cfb22964542ab53644cc4181f9e
2024-06-16 19:13:51 -07:00
jade 6c541e0bef Merge changes I9cf007c8,I9b9ba058 into main
* changes:
  releng: fix broken manifest from 2.90-rc1
  Change the sqlite missing valid path message to say it's the db
2024-06-17 02:06:04 +00:00
Artemis Tosini ce2070139c Merge changes I81e76796,Iba319126 into main
* changes:
  libutil: Set boost defines for FreeBSD
  meson.build: Allow undefined symbols on FreeBSD
2024-06-16 14:42:54 +00:00
jade 4004d12483 Change the sqlite missing valid path message to say it's the db
I meant to edit https://gerrit.lix.systems/c/lix/+/1161 but apparently
clicked the wrong button somehow. Oops.

Change-Id: I9b9ba058ec9206d3c8abe125d91dc554cced52fe
2024-06-15 22:31:23 -07:00
julia dd70044cde Merge changes I07d2da41,I864d7340,I86612c64 into main
* changes:
  Change error messages about 'invalid paths' to 'path does not exist'.
  Add a clearer error message for InvalidPathError during evaluation
  Harmonise the Store::queryPathInfoUncached interface
2024-06-16 04:29:13 +00:00
jade b4035ed1d1 Merge "docs: expand importNative/exec example (#10803)" into main 2024-06-16 04:04:20 +00:00
julia 89c782b0c0 Change error messages about 'invalid paths' to 'path does not exist'.
Fixes #270.

Change-Id: I07d2da41498cfdf324a03af40533044d58c97c7e
2024-06-16 03:55:39 +00:00
julia 6c311a4afa Add a clearer error message for InvalidPathError during evaluation
Part of #270, #271

Change-Id: I864d7340f26d3c0f9c45db7b6b545face38d8294
2024-06-16 03:53:00 +00:00
julia 0fa289f559 Harmonise the Store::queryPathInfoUncached interface
This:
 - Consistently returns `nullptr` for a non-existent
   store path, instead of a mix of `nullptr` and
   throwing exceptions.

 - If a store returns "bad" store paths in response
   to a request (e.g. incorrect hash or name), don't
   cache this result. This removes some duplication
   of code at the cache-access layer of queryPathInfo()
   checking this, and ­allows us to provide more
   specific errors.

Part of #270.

Change-Id: I86612c6499b1a37ab872c712c2304d6a3ff19edb
2024-06-16 03:53:00 +00:00
Artemis Tosini f70b4258cd libutil: Set boost defines for FreeBSD
FreeBSD uses libunwind unwind.h, which does not require
`_GNU_SOURCE` to expose `_Unwind_Backtrace`.

Tell Boost that.

Change-Id: I81e767967b1458118b86d212b5552d4d0a1200d9
2024-06-16 03:41:15 +00:00
jade 5f6eb6eb44 doc: rewrite the multi-user documentation to actually talk about security
It's in the security section, and it was totally outdated anyway.

I took the opportunity to write down the stuff we already believed.

Change-Id: I73e62ae85a82dad13ef846e31f377c3efce13cb0
2024-06-12 15:34:23 -07:00
jade 479055aee8 Misc workaround removals since 24.05 upgrade
Change-Id: I9491b103333cb0e25c245199e88365ded7800d2e
2024-06-12 15:34:23 -07:00
Qyriad 06e65e537b build: expose option to enable or disable precompiled std headers
They are enabled by default, and Meson will also prints whether or not
they're enabled at the bottom at the end of configuration.

Change-Id: I48db238510bf9e74340b86f243f4bbe360794281
2024-06-06 12:46:26 -06:00
jade 8f9bcd20eb Merge "libstore/filetransfer: fix no-s3 build" into main 2024-06-06 03:08:14 +00:00
Linus Heckemann 609b721425 libstore/filetransfer: fix no-s3 build
Fixes a compiler error that looks like:

error: could not convert '[...]' from 'future<void>' to 'future<nix::FileTransferResult>'
Change-Id: I4aeadfeba0dadfdf133f25e6abce90ede7a86ca6
2024-06-05 15:50:57 -07:00
Nikodem Rabuliński 5d3910330d Show message about --update-input being replaced by nix flake update
Fixes: lix-project/lix#283

Change-Id: I6ee23874cb09f51d788521273076a25ba8764859
2024-06-03 21:50:33 +00:00
Nikodem Rabuliński cc3674ea93 Accept multiple arguments to nix flake update
Fixes: lix-project/lix#194

Change-Id: Ia7bd4f7640384be9827dbb7e2c594f0aa5f1aff8
2024-06-03 21:50:33 +00:00
Qyriad c55e93ca23 Revert "nix3: always use the same verbosity default (info)"
This reverts commit d0390b5cf2.

Other parts of the codebase will need to be adjusted in response to a
default verbosity change. Let's just push this to after 2.90.

Fixes #362.
Fixes #367.

Change-Id: I04648473579146851bda41d764adc1ef954c355d
2024-06-01 18:29:19 -06:00
Qyriad d374a9908f Merge "build: fix static linking with a hack" into main 2024-06-01 19:17:13 +00:00
raito b8cb7abcf0 chore: rebrand Nix to Lix when it makes sense
Here's my guide so far:

$ rg '((?!(recursive).*) Nix
(?!(daemon|store|expression|Rocks!|Packages|language|derivation|archive|account|user|sandbox|flake).*))'
-g '!doc/' --pcre2

All items from this query have been tackled. For the documentation side:
that's for lix-project/lix#162.

Additionally, all remaining references to github.com/NixOS/nix which
were not relevant were also replaced.

Fixes: lix-project/lix#148.
Fixes: lix-project/lix#162.
Change-Id: Ib3451fae5cb8ab8cd9ac9e4e4551284ee6794545
Signed-off-by: Raito Bezarius <raito@lix.systems>
2024-06-01 20:31:24 +02:00
Linus Heckemann 5312e60be6 Merge "libfetchers: allow fetching gitlab refs with >1 commit" into main 2024-06-01 09:54:11 +00:00
Qyriad e54d4c9381 build: fix static linking with a hack
This causes libstore, libexpr, libfetchers, and libutil to be linked
with -Wl,--whole-archive to executables, when building statically.

libstore for the store backends, libexpr for the primops, libfetchers
for the fetcher backends I assume(?), and libutil for the nix::logger
initializer (which notably shows in pre-main constructors when HOME is
not owned by the user. cursed.).

This workaround should be removed when #359 is fixed.

Fixes #306.

Change-Id: Ie9ef0154e09a6ed97920ee8ab23810ca5e2de84c
2024-05-31 21:47:16 -06:00
jade c7ca87461d Merge "build-remote: truncate+hash store URI used in lockfile paths" into main 2024-05-31 19:22:32 +00:00
jade 7081889faa Merge "truncate WAL files on exit" into main 2024-05-31 19:21:30 +00:00
jade adedac70fa Merge changes Ifcb0d310,I664366b8,Ibe7cf546 into main
* changes:
  gitignore: delete 90% of it
  build-time: remove 20% more by PCH'ing C++ stdlib
  shellHook: make it actually run
2024-05-31 19:19:29 +00:00
Linus Heckemann 82de36f77a libfetchers: allow fetching gitlab refs with >1 commit
Change-Id: I945c4c5512def9eff728bb67fe3c03ae17f99d6d
2024-05-31 21:12:04 +02:00
jade a75d7a5777 Merge "libutil: fix args assert being thrown on Darwin in nix-eval-jobs" into main 2024-05-31 18:57:13 +00:00
annalee 713cd7e9e7 truncate WAL files on exit
Fix for https://github.com/NixOS/nix/issues/10300

18a2620273  enabled persistent WAL files that will never get truncated. to fix this, journal_size_limit is set to 2^40, which results in the WAL files being truncated to 0 on exit, as well as limiting the WAL files to 2^40 bytes following a checkpoint.

this aligns lix with the nix change: https://github.com/NixOS/nix/pull/10301

https://www.sqlite.org/c3ref/c_fcntl_begin_atomic_write.html#sqlitefcntlpersistwal
https://www.sqlite.org/pragma.html#pragma_journal_size_limit
ed517a7082/src/wal.c (L2518)

PR-Link: https://github.com/lix-project/lix/pull/9

Co-Authored-By: paparodeo <170618376+paparodeo@users.noreply.github.com>
Change-Id: I90ec1a467c92c582ff8c07dd363a4cf789782214
2024-05-31 12:22:15 +00:00
Lunaphied d4b7e6baca build-remote: truncate+hash store URI used in lockfile paths
Fixes: lix-project/lix#157
Fixes: lix-project/lix#221

Previously the entire escaped store URI was included. This would cause
build failures if a very long or deeply nested path was being used in
the store.

Now, we use the first 48 characters of the URL (escaped), then 16 bytes
of hash of the entire URL. This should never collide and limits the
length of the file name to a bit over 64, which is fine.

Change-Id: Ic1ba690a94e83749567c2c29460b8d1bcf2ac413
2024-05-31 12:18:24 +00:00
jade ac78c1dcd5 libutil: fix args assert being thrown on Darwin in nix-eval-jobs
This is because a dynamic_cast<nix::RootArgs *> of a (n-e-j) MyArgs
returns nullptr even though MyArgs has virtual nix::RootArgs as a
parent.

class MyArgs : virtual public nix::MixEvalArgs,
               virtual public nix::MixCommonArgs,
               virtual nix::RootArgs { ... };

So this should work right?? But it does not. We found out that it's
caused by -fvisibility=hidden in n-e-j, but honestly this code was bad
anyway.

The trivial solution is to simply stop relying on RTTI working properly
here, which is probably better OO architecture anyway. However, I am not
100% confident *this* is sound, since we have this horrible hierarchy:

      Args (defines getRoot)
     /        |           \
RootArgs  MixCommonArgs  MixEvalArgs
(overrides)

I am not confident that this is guaranteed to resolve from Args always
in the case of this override.

Assertion failed: (res), function getRoot, file src/libutil/args.cc, line 67.
6MyArgsProcess 60503 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = hit program assert
    frame #4: 0x0000000100b1a41c liblixutil.dylib`nix::Args::processArgs(std::__1::list<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>>> const&, bool) [inlined] nix::Args::getRoot(this=0x00000001000d0688) at args.cc:67:5 [opt]
   64       std::cout << typeid(*p).name();
   65
   66       auto * res = dynamic_cast<RootArgs *>(p);
-> 67       assert(res);
   68       return *res;
   69   }
   70
Target 0: (nix-eval-jobs) stopped.

(lldb) p this
(MyArgs *) 0x00000001000d0688
(lldb) p *this
(nix::Args) {
  longFlags = size=180  { ... }
  shortFlags = size=4  { ... }
  expectedArgs = size=1  { ... }
  processedArgs = size=0 {}
  hiddenCategories = size=1 {
    [0] = "Options to override configuration settings"
  }
  parent = nullptr
}

We also found that if we did this:
class [[gnu::visibility("default")]] RootArgs : virtual public Args

it would work properly (???!). This is of course, very strange, because
objdump -Ct output on liblixexpr.dylib is identical both with and
without it.

Possibly related: https://www.qt.io/blog/quality-assurance/one-way-dynamic_cast-across-library-boundaries-can-fail-and-how-to-fix-it

Fixes: lix-project/nix-eval-jobs#2
Change-Id: I6b9ed968ed56420a9c4d2dffd18999d78c2761bd
2024-05-31 12:17:06 +00:00
alois31 cf756fdf3c libstore/build: copy ca-certificates too
In b469c6509b, the ca-certificates file was
missed. It should be copied too so that we don't end up bind-mounting a broken
symlink.

Change-Id: Ic9b292d602eb94b0e78f77f2a27a19d24665783c
2024-05-31 07:54:18 +00:00
jade 0f99ed43f1 build-time: remove 20% more by PCH'ing C++ stdlib
It seems like someone implemented precompiled headers a long time ago
and then it never got ported to meson or maybe didn't work at all.

This is, however, blessedly easy to simply implement. I went looking for
`#define` that could affect the result of precompiling the headers, and
as far as I can tell we aren't doing any of that, so this should truly
just be free build time savings.

Previous state:
Compilation (551 times):
  Parsing (frontend):         1302.1 s
  Codegen & opts (backend):    956.3 s

New state:
**** Time summary:
Compilation (567 times):
  Parsing (frontend):         1123.0 s
  Codegen & opts (backend):   1078.1 s

I wonder if the "regression" in codegen time is just doing the PCH
operation a few times, because meson does it per-target.

Change-Id: I664366b8069bab4851308b3a7571bea97ac64022
2024-05-30 21:54:21 +00:00
Linus Heckemann 3df013597d libfetchers: handle nonexistent refs in GitLab repos more gracefully
Before:

$ nix flake lock --override-input nixpkgs gitlab:simple-nixos-mailserver/nixos-mailserver/nonexistent
fetching git input 'git+file:///home/linus/projects/lix'
fetching gitlab input 'gitlab:simple-nixos-mailserver/nixos-mailserver/nonexistent'
error: [json.exception.type_error.302] type must be string, but is null

After:

$ outputs/out/bin/nix flake lock --override-input nixpkgs gitlab:simple-nixos-mailserver/nixos-mailserver/nonexistent
fetching git input 'git+file:///home/linus/projects/lix'
fetching gitlab input 'gitlab:simple-nixos-mailserver/nixos-mailserver/nonexistent'
error:
       … while updating the lock file of flake 'git+file:///home/linus/projects/lix?ref=refs/heads/fix-gitlab-nonexistent&rev=915f16a619a36237a099b9aa9afed6d14ff613b4'

       … while updating the flake input 'nixpkgs'

       … while fetching the input 'gitlab:simple-nixos-mailserver/nixos-mailserver/nonexistent'

       error: No commits returned by GitLab API -- does the ref really exist?

Change-Id: Id9bc79d98348500e152ed519bb3ac79a3d15c38d
2024-05-30 21:53:51 +00:00
jade 18aa3e1d57 Merge "Remove 100s of CPU time (10%) from build times (1465s -> 1302s)" into main 2024-05-30 14:57:37 +00:00
jade 53d40888ff Merge "unix-domain-socket.cc: add comment explaining why bindConnectProcHelper" into main 2024-05-30 14:56:57 +00:00
Ilya K da95bf8c82 libstore/filetransfer: remove debug print
foo.

Change-Id: I7d7db22f68046d2ecf3b594b4ee6fd9c9dac4be1
2024-05-30 16:42:45 +03:00
Jörg Thalheim 194b6cc611 docs: expand importNative/exec example (#10803)
Co-authored-by: Qyriad <qyriad@qyriad.me>
Co-authored-by: Valentin Gagarin <valentin.gagarin@tweag.io>
(cherry picked from commit 5786e1ae7c300b3c7434e7df99b41f180dc42e37)
Change-Id: I16b408ba7c70dca985c05c71bf6195fe9f0b5841
2024-05-30 08:12:03 +02:00
jade 7575db522e Remove 100s of CPU time (10%) from build times (1465s -> 1302s)
I saw that boost/lexical_cast was costing about 100s in CPU time on our
compiles. We can fix this trivially by doing explicit template
instantiation in exactly one place and eliminating all other includes of
it, which is a code improvement anyway by hiding the boost.

Before:
```
lix/lix2 » ClangBuildAnalyzer --analyze buildtimeold.bin
Analyzing build trace from 'buildtimeold.bin'...
**** Time summary:
Compilation (551 times):
  Parsing (frontend):         1465.3 s
  Codegen & opts (backend):   1110.9 s

<snip>

**** Expensive headers:
178153 ms: ../src/libcmd/installable-value.hh (included 52 times, avg 3426 ms), included via:
  40x: command.hh
  5x: command-installable-value.hh
  3x: installable-flake.hh
  2x: <direct include>
  2x: installable-attr-path.hh

176217 ms: ../src/libutil/error.hh (included 246 times, avg 716 ms), included via:
  36x: command.hh installable-value.hh installables.hh derived-path.hh config.hh experimental-features.hh
  12x: globals.hh config.hh experimental-features.hh
  11x: file-system.hh file-descriptor.hh
  6x: serialise.hh strings.hh
  6x: <direct include>
  6x: archive.hh serialise.hh strings.hh
  ...

173243 ms: ../src/libstore/store-api.hh (included 152 times, avg 1139 ms), included via:
  55x: <direct include>
  39x: command.hh installable-value.hh installables.hh
  7x: libexpr.hh
  4x: local-store.hh
  4x: command-installable-value.hh installable-value.hh installables.hh
  3x: binary-cache-store.hh
  ...

170482 ms: ../src/libutil/serialise.hh (included 201 times, avg 848 ms), included via:
  37x: command.hh installable-value.hh installables.hh built-path.hh realisation.hh hash.hh
  14x: store-api.hh nar-info.hh hash.hh
  11x: <direct include>
  7x: primops.hh eval.hh attr-set.hh nixexpr.hh value.hh source-path.hh archive.hh
  7x: libexpr.hh value.hh source-path.hh archive.hh
  6x: fetchers.hh hash.hh
  ...

169397 ms: ../src/libcmd/installables.hh (included 53 times, avg 3196 ms), included via:
  40x: command.hh installable-value.hh
  5x: command-installable-value.hh installable-value.hh
  3x: installable-flake.hh installable-value.hh
  2x: <direct include>
  1x: installable-derived-path.hh
  1x: installable-value.hh
  ...

159740 ms: ../src/libutil/strings.hh (included 221 times, avg 722 ms), included via:
  37x: command.hh installable-value.hh installables.hh built-path.hh realisation.hh hash.hh serialise.hh
  19x: <direct include>
  14x: store-api.hh nar-info.hh hash.hh serialise.hh
  11x: serialise.hh
  7x: primops.hh eval.hh attr-set.hh nixexpr.hh value.hh source-path.hh archive.hh serialise.hh
  7x: libexpr.hh value.hh source-path.hh archive.hh serialise.hh
  ...

156796 ms: ../src/libcmd/command.hh (included 51 times, avg 3074 ms), included via:
  42x: <direct include>
  7x: command-installable-value.hh
  2x: installable-attr-path.hh

150392 ms: ../src/libutil/types.hh (included 251 times, avg 599 ms), included via:
  36x: command.hh installable-value.hh installables.hh path.hh
  11x: file-system.hh
  10x: globals.hh
  6x: fetchers.hh
  6x: serialise.hh strings.hh error.hh
  5x: archive.hh
  ...

133101 ms: /nix/store/644b90j1vms44nr18yw3520pzkrg4dd1-boost-1.81.0-dev/include/boost/lexical_cast.hpp (included 226 times, avg 588 ms), included via
:
  37x: command.hh installable-value.hh installables.hh built-path.hh realisation.hh hash.hh serialise.hh strings.hh
  19x: file-system.hh
  11x: store-api.hh nar-info.hh hash.hh serialise.hh strings.hh
  7x: primops.hh eval.hh attr-set.hh nixexpr.hh value.hh source-path.hh archive.hh serialise.hh strings.hh
  7x: libexpr.hh value.hh source-path.hh archive.hh serialise.hh strings.hh
  6x: eval.hh attr-set.hh nixexpr.hh value.hh source-path.hh archive.hh serialise.hh strings.hh
  ...

132887 ms: /nix/store/h2abv2l8irqj942i5rq9wbrj42kbsh5y-gcc-12.3.0/include/c++/12.3.0/memory (included 262 times, avg 507 ms), included via:
  36x: command.hh installable-value.hh installables.hh path.hh types.hh ref.hh
  16x: gtest.h
  11x: file-system.hh types.hh ref.hh
  10x: globals.hh types.hh ref.hh
  10x: json.hpp
  6x: serialise.hh
  ...

  done in 0.6s.
```

After:
```
lix/lix2 » maintainers/buildtime_report.sh build
Processing all files and saving to '/home/jade/lix/lix2/maintainers/../buildtime.bin'...
  done in 0.6s. Run 'ClangBuildAnalyzer --analyze /home/jade/lix/lix2/maintainers/../buildtime.bin' to analyze it.
Analyzing build trace from '/home/jade/lix/lix2/maintainers/../buildtime.bin'...
**** Time summary:
Compilation (551 times):
  Parsing (frontend):         1302.1 s
  Codegen & opts (backend):    956.3 s

<snip>

**** Expensive headers:
178145 ms: ../src/libutil/error.hh (included 246 times, avg 724 ms), included via:
  36x: command.hh installable-value.hh installables.hh derived-path.hh config.hh experimental-features.hh
  12x: globals.hh config.hh experimental-features.hh
  11x: file-system.hh file-descriptor.hh
  6x: <direct include>
  6x: serialise.hh strings.hh
  6x: fetchers.hh hash.hh serialise.hh strings.hh
  ...

154043 ms: ../src/libcmd/installable-value.hh (included 52 times, avg 2962 ms), included via:
  40x: command.hh
  5x: command-installable-value.hh
  3x: installable-flake.hh
  2x: <direct include>
  2x: installable-attr-path.hh

153593 ms: ../src/libstore/store-api.hh (included 152 times, avg 1010 ms), included via:
  55x: <direct include>
  39x: command.hh installable-value.hh installables.hh
  7x: libexpr.hh
  4x: local-store.hh
  4x: command-installable-value.hh installable-value.hh installables.hh
  3x: binary-cache-store.hh
  ...

149948 ms: ../src/libutil/types.hh (included 251 times, avg 597 ms), included via:
  36x: command.hh installable-value.hh installables.hh path.hh
  11x: file-system.hh
  10x: globals.hh
  6x: fetchers.hh
  6x: serialise.hh strings.hh error.hh
  5x: archive.hh
  ...

144560 ms: ../src/libcmd/installables.hh (included 53 times, avg 2727 ms), included via:
  40x: command.hh installable-value.hh
  5x: command-installable-value.hh installable-value.hh
  3x: installable-flake.hh installable-value.hh
  2x: <direct include>
  1x: installable-value.hh
  1x: installable-derived-path.hh
  ...

136585 ms: ../src/libcmd/command.hh (included 51 times, avg 2678 ms), included via:
  42x: <direct include>
  7x: command-installable-value.hh
  2x: installable-attr-path.hh

133394 ms: /nix/store/h2abv2l8irqj942i5rq9wbrj42kbsh5y-gcc-12.3.0/include/c++/12.3.0/memory (included 262 times, avg 509 ms), included via:
  36x: command.hh installable-value.hh installables.hh path.hh types.hh ref.hh
  16x: gtest.h
  11x: file-system.hh types.hh ref.hh
  10x: globals.hh types.hh ref.hh
  10x: json.hpp
  6x: serialise.hh
  ...

89315 ms: ../src/libstore/derived-path.hh (included 178 times, avg 501 ms), included via:
  37x: command.hh installable-value.hh installables.hh
  25x: store-api.hh realisation.hh
  7x: primops.hh eval.hh attr-set.hh nixexpr.hh value.hh context.hh
  6x: eval.hh attr-set.hh nixexpr.hh value.hh context.hh
  6x: libexpr.hh value.hh context.hh
  6x: shared.hh
  ...

87347 ms: /nix/store/h2abv2l8irqj942i5rq9wbrj42kbsh5y-gcc-12.3.0/include/c++/12.3.0/ostream (included 273 times, avg 319 ms), included via:
  35x: command.hh installable-value.hh installables.hh path.hh types.hh ref.hh memory unique_ptr.h
  12x: regex sstream istream
  10x: file-system.hh types.hh ref.hh memory unique_ptr.h
  10x: gtest.h memory unique_ptr.h
  10x: globals.hh types.hh ref.hh memory unique_ptr.h
  6x: fetchers.hh types.hh ref.hh memory unique_ptr.h
  ...

85249 ms: ../src/libutil/config.hh (included 213 times, avg 400 ms), included via:
  37x: command.hh installable-value.hh installables.hh derived-path.hh
  20x: globals.hh
  20x: logging.hh
  16x: store-api.hh logging.hh
  6x: <direct include>
  6x: eval.hh attr-set.hh nixexpr.hh value.hh context.hh derived-path.hh
  ...

  done in 0.5s.
```

Change-Id: I27f0a2d566db17832cd9be935f12efe7f95b92d0
2024-05-29 22:16:15 -07:00
Cole Helbling 031d924116 libutil/args: warn on unknown settings after parsing all flags
Upstream change: https://github.com/NixOS/nix/pull/10701

Change-Id: Icf271df57ec529dd8c64667d1ef9f6dbf02d33d3
2024-05-30 03:07:21 +00:00
jade 26b3a1b9ce unix-domain-socket.cc: add comment explaining why bindConnectProcHelper
We reviewed this code a while ago, and we neglected to get a comment in
saying why it's Like This at the time. Let's fix that, since it is code
that looks very absurd at first glance.

Change-Id: Ib67b49605ef9ef1c84ecda1db16be74fc9105398
2024-05-29 19:50:04 -07:00
jade 562ff516ab Merge changes from topic "libutil-split" into main
* changes:
  util.hh: Delete remaining file and clean up headers
  util.hh: Move nativeSystem to local-derivation-goal.cc
  util.hh: Move stuff to types.hh
  util.cc: Delete remaining file
  util.{hh,cc}: Move ignoreException to error.{hh,cc}
  util.{hh,cc}: Split out namespaces.{hh,cc}
  util.{hh,cc}: Split out users.{hh,cc}
  util.{hh,cc}: Split out strings.{hh,cc}
  util.{hh,cc}: Split out unix-domain-socket.{hh,cc}
  util.{hh,cc}: Split out child.{hh,cc}
  util.{hh,cc}: Split out current-process.{hh,cc}
  util.{hh,cc}: Split out processes.{hh,cc}
  util.{hh,cc}: Split out file-descriptor.{hh,cc}
  util.{hh,cc}: Split out file-system.{hh,cc}
  util.{hh,cc}: Split out terminal.{hh,cc}
  util.{hh,cc}: Split out environment-variables.{hh,cc}
2024-05-30 02:33:05 +00:00
eldritch horrors dd4a2c1759 libstore: fix http abuses no longer working
while refactoring the curl wrapper we inadvertently broken the immutable
flake protocol, because the immutable flake protocol accumulates headers
across the entire redirect chain instead of using only the headers given
in the final response of the chain. this is a problem because Some Known
Providers Of Flake Infrastructure set rel=immutable link headers only in
the penultimate entry of the redirect chain, and curl does not regard it
as worth returning to us via its response header enumeration mechanisms.

fixes lix-project/lix#358

Change-Id: I645c3932b465cde848bd6a3565925a1e3cbcdda0
2024-05-29 22:35:29 +00:00
Tom Hubrecht a39ba22ff7 util.hh: Delete remaining file and clean up headers
Change-Id: Ic1f68e6af658e94ef7922841dd3ad4c69551ef56
2024-05-29 12:38:51 +02:00
Tom Hubrecht f0eb650ee8 util.hh: Move nativeSystem to local-derivation-goal.cc
Change-Id: I74565fbfd3aeedef8f50465808fac712b84e47ad
2024-05-29 11:42:42 +02:00
Tom Hubrecht d73c40ff3d util.hh: Move stuff to types.hh
Change-Id: Ia852306a4b8aac6856dc42bc69e4b58b53a0d67c
2024-05-29 11:42:42 +02:00
Tom Hubrecht 74513483bc util.cc: Delete remaining file
Change-Id: I2b47848904f2ce7bd78b83738e99a4c9da627751
2024-05-29 11:42:42 +02:00
Tom Hubrecht 93ebb3e7df util.{hh,cc}: Move ignoreException to error.{hh,cc}
Change-Id: Iae6464217a55c313a983e5c651b26a4a1e446706
2024-05-29 11:42:42 +02:00
Tom Hubrecht 8b6d2d3915 util.{hh,cc}: Split out namespaces.{hh,cc}
Change-Id: I8fd3f3b50c15ede29d489066b4e8d99c2c4636a6
2024-05-29 11:41:16 +02:00
Tom Hubrecht f79ee66646 util.{hh,cc}: Split out users.{hh,cc}
Change-Id: I1bd92479a2cb7e5c2c2e1541b80474adb05ea0df
2024-05-29 11:01:34 +02:00
Tom Hubrecht b910551120 util.{hh,cc}: Split out strings.{hh,cc}
Change-Id: I4f642d1046d56b5db26f1b0296ee16a0e02d444a
2024-05-29 11:01:34 +02:00
Tom Hubrecht 5b5a75979a util.{hh,cc}: Split out unix-domain-socket.{hh,cc}
Change-Id: I3f9a628e0f8998b6146f5caa8ae9842361a66b8b
2024-05-29 11:01:34 +02:00
Tom Hubrecht e81ed5f12d util.{hh,cc}: Split out child.{hh,cc}
Change-Id: Iec4824e071f537b17dd62dbb8c01b8eec14e9783
2024-05-29 11:01:34 +02:00
Tom Hubrecht 2473e1253d util.{hh,cc}: Split out current-process.{hh,cc}
Change-Id: I77095b9d37e85310075bada7a076ccd482c28e47
2024-05-29 11:01:34 +02:00
Tom Hubrecht 9a52e4688c util.{hh,cc}: Split out processes.{hh,cc}
Change-Id: I39280dc40ca3f7f9007bc6c898ffcf760e2238b7
2024-05-29 11:01:34 +02:00
Tom Hubrecht 8cd9aa24a8 util.{hh,cc}: Split out file-descriptor.{hh,cc}
Change-Id: I0dd0f9a9c2003fb887e076127e7f825fd3289c76
2024-05-29 09:54:47 +02:00
Tom Hubrecht 6b5078c815 util.{hh,cc}: Split out file-system.{hh,cc}
Change-Id: Ifa89a529e7e34e7291eca87d802d2f569cf2493e
2024-05-29 09:54:47 +02:00
Tom Hubrecht 81bdf8d2d6 util.{hh,cc}: Split out terminal.{hh,cc}
Change-Id: I9de2296b4012d50f540124001d54d6ca3be4c6da
2024-05-29 09:54:47 +02:00
Tom Hubrecht 6fd6795bc4 util.{hh,cc}: Split out environment-variables.{hh,cc}
Change-Id: Icff0aa33fda5147bd5dbe256a0b9d6a6c8a2c3f6
2024-05-28 11:29:29 +02:00
Qyriad 2cd1ef2201 Merge "libfetchers: fix URL logging" into main 2024-05-27 14:20:15 +00:00
Qyriad ec5039653d Merge "Revert "bump the extra --version info from info to notice, -vv -> -v"" into main 2024-05-26 21:51:05 +00:00
eldritch horrors ed6b3165ea worker: process timeouts first, and exclusively
check goals for timeouts first, and their activity fds only if no
timeout has occurred. checking for timeouts *after* activity sets
us up for assertion failures by running multiple build completion
notifiers, the first of which will kill/reap the the goal process
and consuming the Pid instance. when the second notifier attempts
to do the same it will core dump with an assertion failure in Pid
and take down not only the single goal, but the entire daemon and
all goals it was building. luckily this is rare in practice since
it requires a build to both finish and time out at the same time.

writing a test for this is not feasible due to how much it relies
on scheduling to actually trigger the underlying bug, but on idle
machines it can usually be triggered by running multiple sleeping
builds with timeout set to the sleep duration and `--keep-going`:

    nix-build --timeout 10 --builders '' --keep-going -E '
      with import <nixpkgs> {};
      builtins.genList
        (i: runCommand "foo-${toString i}" {} "sleep 10")
        100
    '

Change-Id: I394d36b2e5ffb909cf8a19977d569bbdb71cb67b
2024-05-26 20:57:09 +00:00
Qyriad 742c62a6eb docstrings: NixRepl::getDerivationPath: exceptions directly thrown
getDerivationPath() directly throws nix::Error for invalid derivations

Change-Id: I81ead950060b789794fa683b61c6349fece1690d
2024-05-26 17:19:26 +00:00
Qyriad 9f16a20f3d Revert "bump the extra --version info from info to notice, -vv -> -v"
This reverts commit d003dcd7f4.

d0390b5cf¹ bumped the default verbosity of nix3 commands, making this
change obsolete.

[1]: d0390b5cf2

Change-Id: I1ddc36ea4514cd8d2855ff334accf6e98c210879
2024-05-26 11:15:10 -06:00
Maximilian Bosch 5986a720d4 Merge "git putFile: support flake maximalists" into main 2024-05-26 10:16:40 +00:00
Qyriad ebd00b2d0b libfetchers: fix URL logging
8c06b7b43¹ made libfetchers log the URL being fetched just before the
actual fetch, particularly in case something freezes. This used the base
URL, to not include query parameters, as the Nixpkgs lib tests assume
that stderr logs will be equal across shallow and non-shallow git
fetches (and shallow fetches have the ?shallow=1 query parameter).

8c06b7b43 assumed that the `base` field of ParsedURL would be populated,
as the comment simply says "URL without query/fragment"... but
apparently it is not populated when the URL being fetched is *already*
fetched, which caused libfetchers to log things like

fetching gitlab input ''

which is. silly. but you know, busted lix be busted.

Anyway, with this commit we just remove the query params before printing
instead, which seems to do the right thing

[1]: 8c06b7b431

Change-Id: I9b9988992029aa6abef786f20b66e68c2ebb97d4
2024-05-25 19:37:38 -06:00
Artemis Tosini 53e2b0740c
libstore: remove duplicate builder variable
The `builder` local variable and duplicate `args.push_back` are no
longer required since the Darwin sandbox stopped using `sandbox-exec`.
The `drv->isBuiltin` check is not required either, as args are not
accessed when the builder is builtin.

Change-Id: I80b939bbd6f727b01793809921810ff09b579d54
2024-05-25 22:14:55 +00:00
jade dd53bce476 Merge "libstore: parse the buildMode instead of unchecked cast" into main 2024-05-25 17:42:09 +00:00
alois31 ddfe379a6b Merge "libstore/build: always enable seccomp filtering and no-new-privileges" into main 2024-05-25 04:21:53 +00:00
jade 2a7a824d83 libstore: parse the buildMode instead of unchecked cast
Change-Id: Icf6af7935e8f139bef36b40ad475e973aa48855c
2024-05-24 20:45:05 -06:00
Qyriad 5b4b216fac Merge "nix3-upgrade-nix: fix when there are differing pnames" into main 2024-05-25 02:20:24 +00:00
Qyriad 1c0f3c540e Merge changes I3ab84cc5,Iba34ad42 into main
* changes:
  nix3: always use the same verbosity default (info)
  libfetchers: log fetches by URL just before they happen
2024-05-25 01:52:44 +00:00
Qyriad f3f68fcfac nix3-upgrade-nix: fix when there are differing pnames
Change-Id: I19c7e24a4d46137127e76b7bb133e0184d73d1b6
2024-05-25 01:50:32 +00:00
Qyriad 076c19e0d1 change "evaluating file" logs to debug
I can't imagine wanting this unless you are debugging something (in
which case it's very useful)

Change-Id: I90c6f182c18486e9f6b15a59379bbb8e88fb8e7f
2024-05-24 23:03:08 +00:00
alois31 f047e4357b libstore/build: always enable seccomp filtering and no-new-privileges
Seccomp filtering and the no-new-privileges functionality improve the security
of the sandbox, and have been enabled by default for a long time. In
lix-project/lix#265 it was decided that they
should be enabled unconditionally. Accordingly, remove the allow-new-privileges
(which had weird behavior anyway) and filter-syscall settings, and force the
security features on. Syscall filtering can still be enabled at build time to
support building on architectures libseccomp doesn't support.

Change-Id: Iedbfa18d720ae557dee07a24f69b2520f30119cb
2024-05-24 21:19:29 +00:00
Qyriad d0390b5cf2 nix3: always use the same verbosity default (info)
Change-Id: I3ab84cc583e3e8b1c05a8ae1a7a087204f513d03
2024-05-24 15:15:42 -06:00
Qyriad 8c06b7b431 libfetchers: log fetches by URL just before they happen
Addresses but does not close #305, as we still need an indicator for
frozen fetches.

Change-Id: Iba34ad42dc1c8772f7da249b90fe794b041bbf73
2024-05-24 15:15:42 -06:00
Qyriad 00bf2b105d Merge changes I462a8cf0,I3b0bcea3,I2acd56e7,Ifc149764,I9e2ef170 into main
* changes:
  docs: linkify nix3-build mention in nix-build.md
  build: make internal-api-docs PHONY
  cleanup lookupFileArg
  add docstring to lookupFileArg
  add libcmd test for lookupFileArg
2024-05-23 23:28:42 +00:00
jade 9530b7f2b2 Merge "packaging: rename nixexpr -> lixexpr and so on" into main 2024-05-23 23:19:28 +00:00
jade c97e17144e packaging: rename nixexpr -> lixexpr and so on
This breaks downstreams linking to us on purpose to make sure that if
someone is linking to Lix they're doing it on purpose and crucially not
mixing up Nix and Lix versions in compatibility code.

We still need to fix the internal includes to follow the same schema so
we can drop the single-level include system entirely. However, this
requires a little more effort.

This adds pkg-config for libfetchers and config.h.

Migration path:
expr.hh      -> lix/libexpr/expr.hh
nix/config.h -> lix/config.h

To apply this migration automatically, remove all `<nix/>` from
includes, so: `#include <nix/expr.hh>` -> `#include <expr.hh>`. Then,
the correct paths will be resolved from the tangled mess, and the
clang-tidy automated fix will work.

Then run the following for out of tree projects:

```
lix_root=$HOME/lix
(cd $lix_root/clang-tidy && nix develop -c 'meson setup build && ninja -C build')
run-clang-tidy -checks='-*,lix-fixincludes' -load=$lix_root/clang-tidy/build/liblix-clang-tidy.so -p build/ -fix src
```

Related: lix-project/nix-eval-jobs#5
Fixes: lix-project/lix#279
Change-Id: I7498e903afa6850a731ef8ce77a70da6b2b46966
2024-05-23 16:45:23 -06:00
Qyriad a0dcfbb084 cleanup lookupFileArg
Change-Id: I2acd56e7a542b12138f43c95af78fdd50e944619
2024-05-23 14:11:10 -06:00
Qyriad 3a597f1d0b add docstring to lookupFileArg
Change-Id: Ifc149764f5a15725d3d630677c6da29def4b0f3e
2024-05-23 14:11:10 -06:00
Qyriad 677cf75473 repl: log errors writing to history file
These errors are now logged and explicitly ignored, rather than
implicitly ignored.

Change-Id: Ia26015466a17f2b11952df5317a4d150d79dc184
2024-05-23 18:10:23 +00:00
Pierre Bourdon 79121e0c44 Merge "repl: do not crash when tab-completing import errors" into main 2024-05-23 10:48:38 +00:00
eldritch horrors f281727e70 Merge "libstore: remove unused copyPath function" into main 2024-05-23 02:31:50 +00:00
Pierre Bourdon d8bc3bfb6d
repl: do not crash when tab-completing import errors
File not found while importing causes a SysError, not an EvalError,
which is not currently caught by the tab-completion handler. Ignoring
all SysErrors might seem "dangerous" but this is the tab-completion
handler, any exception being bubbled up from there causes unexpected
behavior (causes the whole repl to exit).

Fixes #340.

Change-Id: I643048a47935e77f582decc539d9e51bdb96c890
2024-05-23 02:52:54 +02:00
jade d05e0b9f1f fix: enlarge envSize by several times to not be close to nixpkgs size
nixpkgs has 23000 attributes, and our previous limit would be hit if you
have more than one nixpkgs in the environment, for example, because
`repl-overlays` will load the new stuff from the environment on top of
the existing environment.

This is not really testable since if we did write such a test, it would
just be testing this constant tbh...

Fixes: lix-project/lix#337
Change-Id: I49197bfb4db55b082f914f0d70e84f5f5f110954
2024-05-22 17:08:37 -07:00
Qyriad 06c1375e52 Merge "libfetchers: fallback to memory SQLite if fs IO fails" into main 2024-05-22 21:17:46 +00:00
jade dcc7ea5498 release notes: add a bunch of them
Also fix typos introduced by the commits I read.

I have run the addDrvOutputDependencies release note past Ericson since
I was confused by what the heck it was doing, and he was saying it was
reasonable.

Change-Id: Id015353b00938682f7faae7de43df7f991a5237e
2024-05-22 21:13:56 +02:00
eldritch horrors 47523944c5 libstore: remove unused copyPath function
Change-Id: Ibfb0848d8b337bd38947a745c240838865cea401
2024-05-22 18:26:01 +02:00
Qyriad 6881476232 libfetchers: fallback to memory SQLite if fs IO fails
nix::fetchers::CacheImpl uses $XDG_CACHE_HOME, or its default based on
$HOME, to store its SQLite database. If the current process can't write
to that directory for whatever reason, though, any eval-time fetching
would fail just initializing the cache.

With this change, IO errors initializing the fetcher cache are logged
but ignored, and nix::fetchers::CacheImpl falls back to an in-memory¹
database instead.

Notably, this will fix any uses eval fetching while Lix itself is being
run in a derivation builder (such as during tests), as the derivation
builder does not set $XDG_CACHE_HOME, and sets $HOME to the non-existent
directory /homeless-shelter.

Before:

$ env -u XDG_CACHE_HOME HOME=/homeless-shelter nix -Lv eval --impure -E 'fetchTarball "https://git.lix.systems/lix-project/lix/archive/main.tar.gz"'
error:
       … while calling the 'fetchTarball' builtin
         at «string»:1:1:
            1| fetchTarball "https://git.lix.systems/lix-project/lix/archive/main.tar.gz"
             | ^

       error: creating directory '/homeless-shelter': Permission denied

After:

$ env -u XDG_CACHE_HOME HOME=/homeless-shelter nix -Lv eval --impure -E 'fetchTarball "https://git.lix.systems/lix-project/lix/archive/main.tar.gz"'
warning: ignoring error initializing Lix fetcher cache: error: creating directory '/homeless-shelter': Permission denied
"/nix/store/s9lxdnn0awp37n560bg4fgr497ah4hvw-source"

¹: https://www.sqlite.org/inmemorydb.html

Change-Id: I15c38c9baaf215fc6e192b8a4c70b9692a69bc22
2024-05-21 09:30:25 -06:00
Qyriad 20981461d4 print type and value in "flake attr is not a derivation" errors
This turns errors like:

error: flake output attribute 'hydraJobs' is not a derivation or path

into errors like:

error: expected flake output attribute 'hydraJobs' to be a derivation or
path but found a set: { binaryTarball = «thunk»; build = «thunk»; etc> }

This change affects all InstallableFlake commands.

Change-Id: I899757af418b6f98201006ec6ee13a448c07077c
2024-05-21 05:55:13 -06:00
Artemis Tosini 3de77e6dbd Merge "libutil: Create chmodPath function" into main 2024-05-20 15:13:53 +00:00
Graham Christensen 8220da8a53
git putFile: support flake maximalists
Passing the commit message as an argument causes update failures on repositories with
lots of flake inputs. In some cases, the commit message is over 250,000 bytes.

Upstream PR: https://github.com/NixOS/nix/pull/10686

(cherry picked from commit 8b5e8f4fba5728f2b3e90fcd1ab15df77e3ea0e8)
Change-Id: I2c196a21cc9bedc24d57a828a0c5b9467e072f76
2024-05-20 13:51:29 +02:00
Qyriad 589953e832 Merge "fix -Wdeprecated-copy on clang (BaseError copy assignment)" into main 2024-05-20 00:11:12 +00:00
puck bfb91db4f6 repl-interacter: save history after entering every line
Fixes: lix-project/lix#328
Change-Id: Iedd79ff5f72e84766ebd234c63856170afc624f0
2024-05-19 22:47:45 +00:00
Artemis Tosini 5411fbf204
libutil: Create chmodPath function
Move the identical static `chmod_` functions in libstore to
libutil. the function is called `chmodPath` instead of `chmod`
as otherwise it will shadow the standard library chmod in the nix
namespace, which is somewhat confusing.

Change-Id: I7b5ce379c6c602e3d3a1bbc49dbb70b1ae8f7bad
2024-05-19 22:07:58 +00:00
Qyriad 4eb6779ea8 fix -Wdeprecated-copy on clang (BaseError copy assignment)
2bbe3efd1¹ added the -Wdeprecated-copy warning, and fixed the instances
of it which GCC warned about, in HintFmt and ref<T>. However, when
building with Clang, there is an additional deprecated-copy warning in
BaseError. This commit explicitly defaults the copy assignment operator
for BaseError and silences this warning.

1: 2bbe3efd16
Change-Id: I50aa4a7ab1a7aae5d7b31f765994abd3db06379d
2024-05-19 12:32:13 -06:00
eldritch horrors 774c56094f libstore: fix old RemoteStore::addToStore serializer
having the serializer write into `*conn` is not legal because we are
in a sinkToSource that will be drained by the remote we're connected
to. writing into `*conn` directly can break the framing protocol. it
is unlikely this code was ever run: to protocol it caters to is from
2016(!) and thoroughly untested in-tree, and since it's been present
since nix 2.17 and the 1.18 protocol broken here is nix 2.0 we might
safely assume that daemons older than nix 2.1 are no longer used now

see also #325 (though that wants <2.3 gone, this is sadly only <2.1)

Change-Id: I9d674c18f6d802f61c5d85dfd9608587b73e70a5
2024-05-19 11:57:55 +00:00
Alyssa Ross 139d31f876 Improve nix-store --delete failure message
On several occasions I've found myself confused when trying to delete
a store path, because I am told it's still alive, but
nix-store --query --roots doesn't show anything.  Let's save future
users this confusion by mentioning that a path might be alive due to
having referrers, not just roots.

(cherry picked from commit 979a019014569eee7d0071605f6ff500b544f6ac)

Upstream-PR: https://github.com/NixOS/nix/pull/10733
Change-Id: I54ae839a85f3de3393493fba27fd40d7d3af0516
2024-05-18 14:49:40 -06:00
puck 1fe58bd8a7 nix cat/dump-path/key: stop progress bar before writeFull
These commands outputs data that may not end with a newline. This
causes problems when the progress bar redraws, as that completely
wipes the last line of output. As nix key generate-secret outputs
a single line of text with no output, it shows up entirely blank,
making it look like nothing happened.

Fixes: lix-project/lix#320
Change-Id: I5ac706d71d839b6dfa760b60a351414cd96297cf
2024-05-18 17:51:16 +00:00
Pierre Bourdon d1c8fd3b09 Merge "derived-path: refuse built derived path with a non-derivation base" into main 2024-05-18 07:26:26 +00:00
julia 7a3745b076
Deprecate the online flake registries and vendor the default registry
Fixes #183, #110, #116.

The default flake-registry option becomes 'vendored', and refers
to a vendored flake-registry.json file in the install path.

Vendored copy of the flake-registry is from github:NixOS/flake-registry
at commit 9c69f7bd2363e71fe5cd7f608113290c7614dcdd.

Change-Id: I752b81c85ebeaab4e582ac01c239d69d65580f37
2024-05-18 12:27:23 +10:00
puck 23c92f0815 Merge "primops: change to std::function, allowing the passing of user data" into main 2024-05-17 21:37:41 +00:00
puck 92e1df23b3 Merge "Loosen constness on listElems() result" into main 2024-05-17 21:37:35 +00:00
Qyriad 93b7edfd07 Merge "docs: mention importNative/exec in allow-unsafe-native-code-during-evaluation" into main 2024-05-17 18:17:05 +00:00
julia 005ee33a9a Merge "Allow enabling core dumps from builds for nix & child processes" into main 2024-05-17 01:10:44 +00:00
Qyriad 5ff076d8ad docs: mention importNative/exec in allow-unsafe-native-code-during-evaluation
Both of these still needs their own actual documentation, but they are
at least now mentioned that they exist and what they're enabled by.

Change-Id: I235b9e8e627e04ed06611423c8e67a8eca233120
2024-05-17 00:41:35 +00:00
Pierre Bourdon 5a1824ebe1
derived-path: refuse built derived path with a non-derivation base
Example: /nix/store/dr53sp25hyfsnzjpm8mh3r3y36vrw3ng-neovim-0.9.5^out

This is nonsensical since selecting outputs can only be done for a
buildable derivation, not for a realised store path. The build worker
side of things ends up crashing with an assertion when trying to handle
such malformed paths.

Change-Id: Ia3587c71fe3da5bea45d4e506e1be4dd62291ddf
2024-05-17 02:16:15 +02:00
julia 5b7dcb3005 Allow enabling core dumps from builds for nix & child processes
Fixes lix-project/lix#268

Change-Id: I3f1b0ddf064f891cca8b53229c5c31c74cea3d9f
2024-05-16 17:11:21 -07:00
Qyriad 5756be19f6 Merge "add clarifying doc-comments on {get,create}NixStateDir()" into main 2024-05-17 00:10:38 +00:00
jade 9322a1cbe7 Merge "builtins: fix builtins.langVersion docs to state it's deprecated" into main 2024-05-16 21:19:15 +00:00
Yorick 194654c96f primops: change to std::function, allowing the passing of user data
(cherry picked from commit 48aa57549d514432d6621c1e29f051951eca2d7f)
Change-Id: Ib7d5c6514031ceb6c42ac44588be6b0c1c3c225b
2024-05-16 13:01:40 +00:00
puck c6bb377c91 Loosen constness on listElems() result
Change-Id: I1caff000362c83e5172413a036c22a2e9ed3ede8
2024-05-16 13:01:40 +00:00
jade 6d84d6bdc1 builtins: fix builtins.langVersion docs to state it's deprecated
This builtin was always a problem and nixpkgs uses it in exactly one
place, to give up if the Nix version is absurdly old. It has no other
use cases, and doesn't work in a multi-implementation world anyway.

Change-Id: I03c36e118591029e2ef14b091fe14a311c66a08a
2024-05-15 21:54:12 -07:00
Mel Zuser 9249c89dc6 build: fix build when gc is disabled
Change-Id: I8d3eb8874a4138668011b525c3b400a55a1f4866
2024-05-15 18:48:00 -07:00
Maximilian Bosch aabc902040 Merge "nix3-build: show all FOD errors with --keep-going" into main 2024-05-15 18:46:06 +00:00
alois31 0903a99bad Merge changes I8456c47b,I48253f5f into main
* changes:
  repl: clear the interrupt before reading the next line
  libutil: remove the interrupt-blocking code
2024-05-15 15:46:11 +00:00
Maximilian Bosch e146393183
nix3-build: show all FOD errors with --keep-going
Basically I'd expect the same behavior as with `nix-build`, i.e.
with `--keep-going` the hash-mismatch error of each failing
fixed-output derivation is shown.

The approach is derived from `Store::buildPaths` (`entry-point.cc`):
instead of throwing the first build-result, check if there are any build
errors and if so, display all of them and throw after that.

Unfortunately, the BuildResult struct doesn't have an `ErrorInfo`
(there's a FIXME for that at least), so I have to construct my own here.
This is a rather cheap bugfix and I decided against touching too many
parts of libstore for that (also I don't know if that's in line with the
ongoing refactoring work).

Closes lix-project/lix#302

Change-Id: I378ab984fa271e6808c6897c45e0f070eb4c6fac
2024-05-15 15:35:18 +02:00
alois31 eeb7e71810
repl: clear the interrupt before reading the next line
Otherwise, it will be thrown again during exit when the repl is terminated by
end-of-input after the last command was interrupted.

Change-Id: I8456c47bc36cfb0892efdad5420f318f7e6526d5
2024-05-13 09:04:05 +02:00
alois31 914b0febf7
libutil: remove the interrupt-blocking code
The interrupt-blocking code was originally introduced 20 years ago so that
trying to log an error message does not result in an interrupt exception being
thrown and then going unhandled (c8d3882cdc).
However, the logging code does not check for interrupts any more
(054be50257), so this reasoning is no longer
applicable. Delete this code so that later interrupts are unblocked again, for
example in the next line entered into the repl.

Closes: lix-project/lix#296
Change-Id: I48253f5f4272e75001148c13046e709ef5427fbd
2024-05-13 09:03:53 +02:00
Artemis Tosini 4b35e6a75e Merge "libstore: Fix sandbox=relaxed" into main 2024-05-12 03:51:19 +00:00
Qyriad 88d9b70f67 add clarifying doc-comments on {get,create}NixStateDir()
NixStateDir() != NIX_STATE_DIR. These functions should honestly probably
be renamed.

Change-Id: I00f54b742bba6188bbc7f2410956d956780b99d3
2024-05-11 15:40:00 -06:00
Pierre Bourdon 38d825b21e
filetransfer: fix decompression regression from 121edecf
121edecf65 added a new state field to
carry over content encoding settings from transfer to sink creation, but
never actually set that field.

Change-Id: I714b2efe745561e851b78a4791479b3501db8c72
2024-05-11 14:49:23 +02:00
Qyriad f6dc40cd1c Merge "bump the extra --version info from info to notice, -vv -> -v" into main 2024-05-10 21:56:09 +00:00
raito 4ebbd4362f Merge "feat(libstore): print the first line of stdout of SSH in case of failure" into main 2024-05-10 19:33:36 +00:00
raito 8404a1f66d feat(libstore): print the first line of stdout of SSH in case of failure
In case of failure to connect as can be seen in
https://buildbot.lix.systems/#/builders/39/builds/1386/steps/1/logs/stdio

It is difficult to understand what happened, if we enabled the talkative
verbose level, we could learn about the first line SSH sent us.

In practice, this is not workable, we can just make it warn all the
time.

Change-Id: Iaaf56894060a58f2dfc78254bb60b1c43482f9bb
Signed-off-by: Raito Bezarius <raito@lix.systems>
2024-05-10 20:22:47 +02:00
Qyriad d003dcd7f4 bump the extra --version info from info to notice, -vv -> -v
requiring *two* --verbose to print extra information on --version is a
weird flex

Change-Id: I05d043da1bf583f34e9d1fc206144ea4ca9a859d
2024-05-10 11:55:17 -06:00
eldritch horrors ceccac835c libutil: remove callback.hh
it's no longer used. it really shouldn't have existed this long since it
was just a mashup of both std::promise and std::packaged_task in a shape
that makes composition unnecessarily difficult. all but a single case of
Callback pattern calls were fully synchronous anyway, and even this sole
outlier was by far not important enough to justify the extra complexity.

Change-Id: I208aec4572bf2501cdbd0f331f27d505fca3a62f
2024-05-10 02:21:11 +02:00
eldritch horrors b66451ae7f libstore: de-callback-ify FileTransfer
also add a few more tests for exception propagation behavior. using
packaged_tasks and futures (which only allow a single call to a few
of their methods) introduces error paths that weren't there before.

Change-Id: I42ca5236f156fefec17df972f6e9be45989cf805
2024-05-10 02:21:11 +02:00
eldritch horrors 28a98d152c libstore: de-callback-ify Store::queryRealisation
Change-Id: I8d74745c519518f163f51dfaa39063836f17599e
2024-05-09 23:18:05 +02:00
eldritch horrors 17965bf11c libstore: un-callback-ify Store::queryRealisationUncached
Change-Id: I4a328f46eaac3bb8b19ddc091306de83348be9cf
2024-05-09 23:18:05 +02:00
eldritch horrors 2f4a1dd6e0 libstore: de-callback-ify Store::queryPathInfoUncached
Change-Id: I23a156aaff5328f67ca16ccd85c0ea1711b21e35
2024-05-09 23:18:05 +02:00
eldritch horrors c77bd88259 libstore: de-callback-ify BinaryCacheStore::getFile
Change-Id: I36b3eb9f645aa04058151e7b2353e15e6f29057b
2024-05-09 23:18:05 +02:00
eldritch horrors 1a002d1a11 libstore: de-callback-ify CA realisation substitution
this is the *only* real user of file transfer download completion
callbacks, and a pretty spurious user at that (seeing how nothing
here is even turned on by default and indeed a dependency of path
substitution which *isn't* async, and concurrency-limited). it'll
be a real pain to keep this around, and realistically it would be
a lot better to overhaul substitution in general to be *actually*
async. that requires a proper async framework footing though, and
we don't have anything of the sort, but it's also blocking *that*

Change-Id: I1bf671f217c654a67377087607bf608728cbfc83
2024-05-09 23:18:05 +02:00
Qyriad 1f9b0fba23 add and fix -Wignored-qualifiers
Change-Id: I4bffa766ae04dd80355f9b8c10e59700e4b406da
2024-05-09 07:08:44 -06:00
Qyriad 2bbe3efd16 add and fix -Wdeprecated-copy
*so* many warnings, from only two definitions

Change-Id: If2561cd500c05a1e33cce984faf9f3e42a8a95ac
2024-05-09 13:02:45 +00:00
Qyriad 010bbd1b0e Merge "nix3-eval: don't elide top-level errors" into main 2024-05-09 11:46:13 +00:00
Qyriad 54322f09d3 nix3-eval: don't elide top-level errors
Fixes #276.

Change-Id: I83e71beb5c35d6f3b10a4186caa5e52a2f95b510
2024-05-08 13:37:20 -06:00
Théophane Hufschmitt adea821d87
libstore: Fix sandbox=relaxed
The fix for the Darwin vulnerability in ecdbc3b207
also broke setting `__sandboxProfile` when `sandbox=relaxed` or
`sandbox=false`. This cppnix change fixes `sandbox=relaxed` and
adds a suitable test.

Co-Authored-By: Artemis Tosini <lix@artem.ist>
Co-Authored-By: Eelco Dolstra <edolstra@gmail.com>
Change-Id: I40190f44f3e1d61846df1c7b89677c20a1488522
2024-05-08 19:31:43 +00:00
alois31 243c0f18da
repl: show a progress bar while performing builds
In commit 946fc12e4e, the progress bar in the
repl was disabled again because it was observed to erase incremental output
from attrset evaluations from the terminal. Let's try adding the progress bar
again, this time showing up only when a build is initiated, which does not have
incremental output that could be destroyed to begin with. While this does mean
that we won't have a progress bar for eval-time fetching or IFD, it's still
better than nothing.

Change-Id: If4eb1035cd0c876f5b4ff1e2434b9baf99f150ac
2024-05-08 20:54:41 +02:00
Qyriad b9be46fb31 remove the autoconf+Make buildsystem
We're not using it anymore. Any leftover bugs in the Meson buildsystem
are now just bugs.

Closes #249.

Change-Id: I0465a0c37ae819f94d40e7829f5bff046aa63d73
2024-05-07 17:04:30 -06:00
Nikodem Rabuliński e8a603fb2f Merge changes Icf26010a,Ib6161567 into main
* changes:
  Always initialize curl in parent process on darwin
  Fix failing darwin tests
2024-05-07 21:26:24 +00:00
Nikodem Rabuliński f894cce79b
Always initialize curl in parent process on darwin
Because of an objc quirk[1], calling curl_global_init for the first time
after fork() will always result in a crash.
Up until now the solution has been to set
OBJC_DISABLE_INITIALIZE_FORK_SAFETY for every nix process to ignore
that error.
This is less than ideal because we were setting it in package.nix,
which meant that running nix tests locally would fail because
that variable was not set.
Instead of working around that error we address it at the core -
by calling curl_global_init inside initLibStore, which should mean
curl will already have been initialized by the time we try to do so in
a forked process.

[1] 01edf1705f/runtime/objc-initialize.mm (L614-L636)

Change-Id: Icf26010a8be655127cc130efb9c77b603a6660d0
2024-05-07 20:43:17 +02:00
eldritch horrors 964ac8b0e8 libutil: de-callback-ify computeClosure
only two users of this function exist. only one used it in a way that
even bears resemblance to asynchronicity, and even that one didn't do
it right. fully async and parallel computation would have only worked
if any getEdgesAsync never calls the continuation it receives itself,
only from more derived callbacks running on other threads. calling it
directly would cause the decoupling promise to be awaited immediately
*on the original thread*, completely negating all nice async effects.

Change-Id: I0aa640950cf327533a32dee410105efdabb448df
2024-05-07 14:35:20 +00:00
eldritch horrors 230860dbb8 libstore: limit CA realisation info substitution concurrency
this seems to be an oversight, considering that regular substitutions
are concurrency-limited. while not particularly necessary at present,
once we've removed the `Callback` based interfaces it will be needed.

Change-Id: Ide2d08169fcc24752cbd07a1d33fb8482f7034f5
2024-05-07 14:35:20 +00:00
eldritch horrors 29f93e1e0d libutil: throw EndOfFile at sourceToSink end
... how has this never broken anything before

Change-Id: If3789c02028e8f929481514f63d76b0b46bfc182
2024-05-07 14:35:20 +00:00
Qyriad 005b2b61e6 fix fallback chroot store creation after b247ef72d
When /nix/var (or, more precisely, NIX_STATE_DIR) does not exist at all,
Lix falls back to creating an adhoc chroot store in XDG_DATA_HOME.

b247ef72d[1] changed the way Store classes are initialized, and in the
migration, a `params2` was accidentally changed to `params`. This commit
restores the correct behavior, and in lieu of a single *character* fix,
this commit also changes the variable name to something more reasonable.

Fixes #274.

[1]: b247ef72dc

n.b., this code might deserve some more looking at anyway. this fallback
store creation throws away *all* Store params passed to
openFromNonUri() in favor of an entirely new set which only contains
the `root` param, which may or may not be the correct behavior

Change-Id: Ibea559b88a50e6d6e75a1f87d9d7816cabb2a8f3
2024-05-06 20:54:21 -06:00
eldritch horrors f75d0752ce filetransfer: correctly abort empty transfers
returning 0 from the callback for errors signals successful transfer if
the source returned no data even though the exception we've just caught
clearly disagrees. while this is not all that important (since the only
viable cause of such errors will be dataCallback, and the sole instance
of it being used already takes care of exceptions) we can just do this.

Change-Id: I2bb150eff447121d82e8e3aa4e00057c40523ac6
2024-05-06 21:18:23 +02:00
eldritch horrors 121edecf65 filetransfer: extract decompressor creation
this will be necessary if we want download() to return a source instead
of consuming a sink, which will in turn be needed to remove coroutines.

Change-Id: I34ec241e9bbc5d32fbcd243b244e29c3757533aa
2024-05-06 20:19:03 +02:00
jade 748d8310fa Fix the pages in the manual for Lix
This doesn't comprehensively fix everything outdated in the manual, or
make the manual greatly better, but it does note down where at least
jade noticed it was wrong, and it does fix all the instances of
referencing Nix to conform to the style guide to the best of our
ability.

A lot of things have been commented out for being wrong, and there are
three types of FIXME introduced:

- FIXME(Lix): generically Lix needs to fix it
- FIXME(Qyriad): re lix-project/lix#215
- FIXME(meson): docs got outdated by meson changes and need rewriting

I did fix a bunch of it that I could, but there could certainly be
mistakes and this is definitely just an incremental improvement.

Fixes: lix-project/lix#266
Change-Id: I5993c4603d7f026a887089fce77db08394362135
2024-05-05 16:11:01 -07:00
Qyriad 99903f24eb fix integer overflow on i686 with high phys memory
sizeof(long) is 4 bytes on i686 GCC.
With ~32 GiB of memory and a page size of 4096, there are 7988420 pages.
(7988420 * 4096) is bigger than INT32_MAX folks.

This has gone unnoticed for 9 years, and only came up thanks to
94ea517db[1] adding integer overflow sensitization checks, which caused
this broken code to emit an illegal instruction, crashing Lix the
instant the buildsystem ran Lix to generate the docs files.

[1]: 94ea517dbe

Change-Id: I50bb9ea072aac11b449d79e5d55525887a6e5a99
2024-05-05 19:47:46 +00:00
Qyriad 4998699e1a Merge "point nix3-upgrade-nix to releases.lix.systems/manifest.nix" into main 2024-05-05 19:47:36 +00:00
jade 4fd32351f3 Merge "Warn on untrusted client settings being ignored" into main 2024-05-05 19:35:35 +00:00
eldritch horrors 6b08138929 filetransfer: abort transfer on receiver exception
not doing this will cause transfers that had their readers disappear to
linger. with lingering transfers the curl thread can't shut down, which
will cause nix itself to not shut down until the transfer finishes some
other way (most likely network timeouts). also add a new test for this.

Change-Id: Id2401b3ac85731c824db05918d4079125be25b57
2024-05-05 18:09:31 +00:00
Qyriad 7ab076f21c point nix3-upgrade-nix to releases.lix.systems/manifest.nix
This file is currently manually managed, but will be automated along
with the rest of the release process.

Change-Id: I77839919549aaac73de582b2e563ce3ef914a8cb
2024-05-05 17:45:50 +00:00
jade 2e8f9ac944 Warn on untrusted client settings being ignored
These are such a footgun and trip people up a lot. Let's make Lix louder
about this.

Related: lix-project/lix#261
Change-Id: I6a8d57c9817caaa6b0cbf886c615dda51038f628
2024-05-04 21:30:26 -07:00
jade 47fb494676 Merge "Actually try making a userns before assuming they don't work" into main 2024-05-05 03:58:44 +00:00
jade fb5d6f325b Merge "Fix /etc/group having desynced IDs from the actual UID in the sandbox" into main 2024-05-05 03:57:29 +00:00
jade e3b702fa22 Actually try making a userns before assuming they don't work
If unprivileged userns are *believed* to be disabled (such as with
"kernel.unprivileged_userns_clone = 0"), Lix would previously *give up*
on trying to use a user namespace before actually trying it, even if, in
cases such as unprivileged_userns_clone, it would actually be allowed
since Nix has CAP_SYS_ADMIN when running as daemon.

(see, e.g. 25d4709a4f)

We changed it to actually try it first, and then diagnose possible
causes, and also to be more loud about the whole thing, using warnings
instead of debugs. These warnings will only print on the first build run
by the daemon, which is, tbh, eh, shrug.

This is what led to us realizing that no-userns was a poorly exercised
condition.

Change-Id: I8e4f21afc89c574020dc7e89a560cc740ce6573a
2024-05-05 00:37:24 +00:00
jade 9909a175bf Fix /etc/group having desynced IDs from the actual UID in the sandbox
This was found when `logrotate.conf` failed to build in a NixOS system
with:

    /nix/store/26zdl4pyw5qazppj8if5lm8bjzxlc07l-coreutils-9.3/bin/id: cannot find name for group ID 30000

This was surprising because it seemed to mean that /etc/group was busted
in the sandbox. Indeed it was:

    root0:
    nixbld:!💯
    nogroup65534:

We diagnosed this to sandboxUid() being called before
usingUserNamespace() was called, in setting up /etc/group inside the
sandbox. This code desperately needs refactoring.

We also moved the /etc/group code to be with the /etc/passwd code, but
honestly this code is all spaghetti'd all over the place and needs some
more serious tidying than we did here.

We also moved some checks to be earlier to improve locality with where
the things they are checking come from.

Change-Id: Ie29798771f3593c46ec313a32960fa955054aceb
2024-05-04 17:36:50 -07:00
jade 4886d4592b Remove a URL literal from fetchTarball docs
Change-Id: I254b793b42f77ffe9f357f3b376683e5758f23b5
2024-05-04 16:55:27 -07:00
Maximilian Bosch 799d0132f0 Merge "Revert "Revert "Merge pull request #6621 from Kha/nested-follows""" into main 2024-05-04 08:52:29 +00:00
Maximilian Bosch 79d0ae6670 Merge "libstore/local-derivation-goal: prohibit creating setuid/setgid binaries" into main 2024-05-04 07:26:15 +00:00
Maximilian Bosch 0e38720502 Revert "Revert "Merge pull request #6621 from Kha/nested-follows""
This reverts commit a8b3d777fb.

This undoes the revert of PR#6621, which allows nested `follows`, i.e.

    {
      inputs = {
        foo.url = "github:bar/foo";
        foo.inputs.bar.inputs.nixpkgs = "nixpkgs";
      };
    }

does the expected thing now. This is useful to avoid the 1000 instances
of nixpkgs problem without having each flake in the dependency tree to
expose all of its transitive dependencies for modification.

This was in fact part of Nix before and the C++ changes applied w/o
conflicts. However, it got reverted then because people didn't want to
merge lazy-trees against it which was supposed to be merged soon back in
October 2022.

Fixes: lix-project/lix#201

Change-Id: I5ddef914135b695717b2ef88862d57ced5e7aa3c
2024-05-03 22:54:38 +00:00
Maximilian Bosch f8617f9dc6 Merge "Rename nix show-config to nix config show" into main 2024-05-03 22:07:33 +00:00
Maximilian Bosch 045ee37438 libstore/local-derivation-goal: prohibit creating setuid/setgid binaries
With Linux kernel >=6.6 & glibc 2.39 a `fchmodat2(2)` is available that
isn't filtered away by the libseccomp sandbox.

Being able to use this to bypass that restriction has surprising results
for some builds such as lxc[1]:

> With kernel ≥6.6 and glibc 2.39, lxc's install phase uses fchmodat2,
> which slips through 9b88e52846/src/libstore/build/local-derivation-goal.cc (L1650-L1663).
> The fixupPhase then uses fchmodat, which fails.
> With older kernel or glibc, setting the suid bit fails in the
> install phase, which is not treated as fatal, and then the
> fixup phase does not try to set it again.

Please note that there are still ways to bypass this sandbox[2] and this is
mostly a fix for the breaking builds.

This change works by creating a syscall filter for the `fchmodat2`
syscall (number 452 on most systems). The problem is that glibc 2.39
is needed to have the correct syscall number available via
`__NR_fchmodat2` / `__SNR_fchmodat2`, but this flake is still on
nixpkgs 23.11. To have this change everywhere and not dependent on the
glibc this package is built against, I added a header
"fchmodat2-compat.hh" that sets the syscall number based on the
architecture. On most platforms its 452 according to glibc with a few
exceptions:

    $ rg --pcre2 'define __NR_fchmodat2 (?!452)'
    sysdeps/unix/sysv/linux/x86_64/x32/arch-syscall.h
    58:#define __NR_fchmodat2 1073742276

    sysdeps/unix/sysv/linux/mips/mips64/n32/arch-syscall.h
    67:#define __NR_fchmodat2 6452

    sysdeps/unix/sysv/linux/mips/mips64/n64/arch-syscall.h
    62:#define __NR_fchmodat2 5452

    sysdeps/unix/sysv/linux/mips/mips32/arch-syscall.h
    70:#define __NR_fchmodat2 4452

    sysdeps/unix/sysv/linux/alpha/arch-syscall.h
    59:#define __NR_fchmodat2 562

I added a small regression-test to the setuid integration-test that
attempts to set the suid bit on a file using the fchmodat2 syscall.
I confirmed that the test fails without the change in
local-derivation-goal.

Additionally, we require libseccomp 2.5.5 or greater now: as it turns
out, libseccomp maintains an internal syscall table and
validates each rule against it. This means that when using libseccomp
2.5.4 or older, one may pass `452` as syscall number against it, but
since it doesn't exist in the internal structure, `libseccomp` will refuse
to create a filter for that. This happens with nixpkgs-23.11, i.e. on
stable NixOS and when building Lix against the project's flake.

To work around that

* a backport of libseccomp 2.5.5 on upstream nixpkgs has been
  scheduled[3].

* the package now uses libseccomp 2.5.5 on its own already. This is to
  provide a quick fix since the correct fix for 23.11 is still a staging cycle
  away.

We still need the compat header though since `SCMP_SYS(fchmodat2)`
internally transforms this into `__SNR_fchmodat2` which points to
`__NR_fchmodat2` from glibc 2.39, so it wouldn't build on glibc 2.38.
The updated syscall table from libseccomp 2.5.5 is NOT used for that
step, but used later, so we need both, our compat header and their
syscall table 🤷

Relevant PRs in CppNix:

* https://github.com/NixOS/nix/pull/10591
* https://github.com/NixOS/nix/pull/10501

[1] https://github.com/NixOS/nixpkgs/issues/300635#issuecomment-2031073804
[2] https://github.com/NixOS/nixpkgs/issues/300635#issuecomment-2030844251
[3] https://github.com/NixOS/nixpkgs/pull/306070

(cherry picked from commit ba6804518772e6afb403dd55478365d4b863c854)
Change-Id: I6921ab5a363188c6bff617750d00bb517276b7fe
2024-05-03 16:29:06 +02:00
Théophane Hufschmitt 8458d98b27 Rename nix show-config to nix config show
Part of #7672

My main motivation is to be able to use `nix.checkConfig`[1]. This
doesn't work with Lix currently since the module uses `nix show-config`
if the Nix version is <2.20pre and `nix config show` otherwise. I think
this is the only instance where nixpkgs checks for which Nix commands
exist that affects us now, so I figured we could just perform the rename
here as well[2] and still provide the current version number[3].

I don't have a strong opinion on whether to deprecate `nix show-config`,
the warning is added there automatically.

(cherry picked from commit f300e11b056dea414d7d77bbc6e5a7dc5d9ddd41)

[1] https://nixos.org/manual/nixos/stable/options.html#opt-nix.checkConfig
[2] I should add that I don't use the "official" ways of installing Lix
    because using the flake directly and callPackaging it seemed to fit
    better into my workflow: I already have a little mess to make
    sure Hydra from the flake uses the correct pkgs.nix and I didn't
    want to complicate it further while keeping a single package-set I
    can build in CI. Don't get me wrong, I think such a module for a
    quick-start is very important, just giving context on why I bother
    in the first place :)
[3] When we go public, I think it's worth considering to add support in
    nixpkgs itself for Lix.

Change-Id: I47b4239b05cbeda3c370d2fa56ea768b768768ac
2024-05-03 16:26:16 +02:00
Qyriad 19645a4a64 Merge changes Id1a67156,I03f4c7c1,I146736bb,I3b1453cb into main
* changes:
  docs: clarify how ^ works for -E/-f installables
  docs: give translation examples from nix-build -E/-A to installables
  docs: clarify how the different kinds of installables are selected
  docs: guide to installables docs in installable commands' docs
2024-05-03 13:39:49 +00:00
Artemis Tosini 6f0636a7ed Merge "libstore: check additionalSandboxProfile" into main 2024-05-03 03:35:02 +00:00
Artemis Tosini ecdbc3b207 libstore: check additionalSandboxProfile
Currently LocalDerivationGoal allows setting `__sandboxProfile`
to add sandbox parameters on Darwin when `sandbox=true`.
This was only supposed to have an effect when `sandbox=relaxed`

Change-Id: Ide44ee82d7e4d6b545285eab26547e7014817d3f
2024-05-03 00:59:18 +00:00
eldritch horrors d55b158e24 libutil: make rewriteStrings sound
this is used in CA rewriting, replacement of placeholders in
derivations, generating scripts for devShells, and some more
places. in all of these transitive replacements are unsound,
and overlapping replacements would be as well. there even is
a test that transitive replacements do not happen (in the CA
RewriteSink suite), but none for overlapping replacements. a
minimally surprising binary rewriter surely would not do any
of these replacements, the only reason we have not seen this
break yet is probably that rewriteStrings is only called for
store paths and things that look like store paths (and those
should never overlap nor admit such transitive replacements)

Change-Id: I6fc29f939d5061d9f56c752624a823ece8437c07
2024-05-03 00:50:31 +00:00
Qyriad 076dfd30c6 Merge changes from topic "profile-v3" into main
* changes:
  nix3-profile: remove check "name" attr in manifests
  Add profile migration test
  nix3-profile: make element names stable
  getNameFromURL(): Support uppercase characters in attribute names
  nix3-profile: remove indices
  nix3-profile: allow using human-readable names to select packages
  implement parsing human-readable names from URLs
2024-05-02 20:15:48 +00:00
Qyriad 6a8b379628 nix3-profile: remove check "name" attr in manifests
It doesn't seem to have ever been used.

Based off of commit a748e88bf4cca0fdc6ce75188e88017a7899d16b

Upstream-PR: https://github.com/NixOS/nix/pull/9656
Change-Id: Idcf250a645fa43f2ef11fb15b503b070a62a917e
2024-05-02 12:59:15 -06:00
Qyriad e0911eef73 nix3-profile: make element names stable
Based off of commit 6268a45b650f563bae2360e0540920a2959bdd40

Upstream-PR: https://github.com/NixOS/nix/pull/9656
Co-authored-by: Eelco Dolstra <edolstra@gmail.com>
Change-Id: I0fcf069a8537c61ad6fc4eee1f3c193a708ea1c4
2024-05-02 12:59:15 -06:00
Eelco Dolstra ce70f02aff getNameFromURL(): Support uppercase characters in attribute names
In particular, this makes it handle 'legacyPackages' correctly.

(cherry picked from commit 936a3642264ac159f3f9093710be3465b70e0e89)

Upstream-PR: https://github.com/NixOS/nix/pull/9657
Change-Id: Icc4efe02f7f8e90a2970589f72fd3d3cd4418d95
2024-05-02 12:02:28 -06:00
Qyriad e98fc952a8 nix3-profile: remove indices
Based off of commit 3187bc9ac3dd193b9329ef68c73ac3cca794ed78

Upstream-PR: https://github.com/NixOS/nix/pull/9656
Co-authored-by: Eelco Dolstra <edolstra@gmail.com>
Change-Id: I8ac4a33314cd1cf9de95404c20f58e883460acc7
2024-05-02 12:02:28 -06:00
Qyriad f88423813f nix3-profile: allow using human-readable names to select packages
These names are parsed from the URL provided for that package

Based off of commit 257b768436a0e8ab7887f9b790c5b92a7fe51ef5

Upstream-PR: https://github.com/NixOS/nix/pull/8678
Co-authored-by: Felix Uhl <felix.uhl@outlook.com>
Change-Id: I76d5f9cfb11d3d2915b3dd1db21d7bb49e91f4fb
2024-05-02 12:02:28 -06:00
Robert Hensing b7ce11c97d Disallow store path names that are . or .. (plus opt. -)
As discussed in the maintainer meeting on 2024-01-29.

Mainly this is to avoid a situation where the name is parsed and
treated as a file name, mostly to protect users.
.-* and ..-* are also considered invalid because they might strip
on that separator to remove versions. Doesn't really work, but that's
what we decided, and I won't argue with it, because .-* probably
doesn't seem to have a real world application anyway.
We do still permit a 1-character name that's just "-", which still
poses a similar risk in such a situation. We can't start disallowing
trailing -, because a non-zero number of users will need it and we've
seen how annoying and painful such a change is.

What matters most is preventing a situation where . or .. can be
injected, and to just get this done.

(cherry picked from commit f1b4663805a9dbcb1ace64ec110092d17c9155e0)
Change-Id: I900a8509933cee662f888c3c76fa8986b0058839
2024-05-02 19:34:38 +02:00
Robert Hensing 3a058dc4b3 Revert "StorePath: reject names starting with '.'"
This reverts commit 24bda0c7b381e1a017023c6f7cb9661fae8560bd.

(cherry picked from commit 9ddd0f2af8fd95e1380027a70d0aa650ea2fd5e4)
Change-Id: Ideb547e2a8ac911cf39d58d3e0c1553867bdd776
2024-05-02 18:53:51 +02:00
Qyriad 1425aa0b7c implement parsing human-readable names from URLs
Based off of commit 257b768436a0e8ab7887f9b790c5b92a7fe51ef5

Upstream-PR: https://github.com/NixOS/nix/pull/8678
Co-authored-by: Felix Uhl <felix.uhl@outlook.com>
Change-Id: Idcb7f6191ca3310ef9dc854197f7798260c3f71d
2024-04-30 18:11:14 -06:00
Qyriad 4942e4e2d2 docs: clarify how ^ works for -E/-f installables
We didn't even realize you *could* use this syntax with -E and -f, much
less that the attribute path could be *empty*.

Change-Id: Id1a6715609f3a76a5ce477bd43a7832effbbe07b
2024-04-29 08:53:43 -06:00
Qyriad 6abeea70e9 docs: give translation examples from nix-build -E/-A to installables
Change-Id: I03f4c7c1049063539a35ba500a07bb8f866d4cb7
2024-04-29 08:18:00 -06:00
Qyriad bd2619868c docs: clarify how the different kinds of installables are selected
Change-Id: I146736bb97ebe035e04be69ce9fb60a557e38c6c
2024-04-29 08:18:00 -06:00
Qyriad 194ba8a02f docs: guide to installables docs in installable commands' docs
The installables syntax is not documented in any of the man pages or
docbook pages for any of those individual commands. And while these
commands really should at least peripherally individually document how
installables work, in the meantime we can at least direct people to the
right place.

This commit also clarifies the unexpected fact that `nix profile remove`
and `nix profile upgrade` do *not* take installables.

Change-Id: I3b1453cb197a613bbab639c66a466365c3592c6d
2024-04-29 08:06:05 -06:00
Qyriad ee5a1b5a4c nix3-upgrade-nix: allow manually specifying new nix
This allows manually specifying a store path for the new Nix that
gets linked into Nix's profile.

Change-Id: Ib71711ffb466febf4a6892e3fdbda644e053770d
2024-04-29 01:19:21 +00:00
Qyriad aae12f5848 fix nix upgrade-nix on new-style profiles
nix3-profile automatically migrates any profile its used on to its style
of profile -- the ones with manifest.json instead of manifest.nix. On
non-NixOS systems, Nix is conventionally installed to the profile at
/nix/var/nix/profiles/default, so if a user passed that to `--profile`
of `nix profile`, then it would break upgrade-nix from ever working
again, without recreating the profile.

This commit fixes that, and allows upgrade-nix to work on either kind of
profile.

Fixes #16.

Change-Id: I4c49b1beba93bb50e8f8a107edc451affe08c3f7
2024-04-29 01:19:21 +00:00
Qyriad 2bd57d4d36 refactor some nix-env and profile code to libcmd
Notably, ProfileManifest and ProfileElement are useful generic
profile management code, and nix profile is not the only place in the
codebase where profiles are relevant.

This commit is in preparation for fixing upgrade-nix's interaction with
new-style profiles.

Change-Id: Iefc8bbd34b4bc6012175cb3d6e6a8207973bc792
2024-04-29 01:19:21 +00:00
puck 0c831765bd Run all derivation builders inside the sandbox on macOS
This replaces the external sandbox-exec call with direct calls into
libsandbox. This API is technically deprecated and is missing some
prototypes, but all major browsers depend on it, so it is unlikely to
materially change without warning.

This commit also ensures the netrc file is only written if the
derivation is in fact meant to be able to access the internet.

This change commits a sin of not actually actively declaring its
dependency on macOS's libsandbox.dylib; this is due to the dylib
cache in macOS making that explicit dependency unnecessary. In the
future this might become a problem, so this commit marks our sins.

Co-authored-by: Artemis Tosini <lix@artem.ist>
Co-authored-by: Lunaphied <lunaphied@lunaphied.me>
Change-Id: Ia302141a53ce7b0327c1aad86a117b6645fe1189
2024-04-27 14:44:15 -06:00
puck 9229e87347 Fix progress bar on copyPaths
This variable should not be shared between activities.

Change-Id: I4eee89bc7acb320a3972dc3a55bfb087d3a9eb3a
2024-04-27 18:03:15 +00:00
Ilya K 9462c01c3e libstore/ssh: shut
This is just logspam, and we have NIX_SSHOPTS for people that want the logspam.

Change-Id: Ieff71473686f0661f9c53c212f8952dd2c9565c3
2024-04-27 12:05:17 +03:00
Maximilian Bosch 8773439a85 Merge "ssh-ng: Set log-fd for ssh to 4 by default" into main 2024-04-26 18:30:33 +00:00
Artemis Tosini 789aa39576 Merge "gc: Find roots using libproc on Darwin" into main 2024-04-26 17:26:45 +00:00
Maximilian Bosch 104448e75d ssh-ng: Set log-fd for ssh to 4 by default
That's expected by `build-remote` and makes sure that errors are
correctly forwarded to the user. For instance, let's say that the
host-key of `example.org` is unknown and

    nix-build ../nixpkgs -A hello -j0 --builders 'ssh-ng://example.org'

is issued, then you get the following output:

    cannot build on 'ssh-ng://example.org?&': error: failed to start SSH connection to 'example.org'
    Failed to find a machine for remote build!
    derivation: yh46gakxq3kchrbihwxvpn5bmadcw90b-hello-2.12.1.drv
    required (system, features): (x86_64-linux, [])
    2 available machines:
    [...]

The relevant information (`Host key verification failed`) ends up in the
daemon's log, but that's not very obvious considering that the daemon
isn't very chatty normally.

This can be fixed - the same way as its done for legacy-ssh - by passing
fd 4 to the SSH wrapper. Now you'd get the following error:

    cannot build on 'ssh-ng://example.org': error: failed to start SSH connection to 'example.org': Host key verification failed.
    Failed to find a machine for remote build!
    [...]

...and now it's clear what's wrong.

Please note that this is won't end up in the derivation's log.

For previous discussion about this change see
https://github.com/NixOS/nix/pull/7659.

Change-Id: I5790856dbf58e53ea3e63238b015ea06c347cf92
2024-04-26 19:04:06 +02:00
eldritch horrors a1ad4e52a6 filetransfer: don't decompress in curl wrapper itself
only decompress the response once all data has been received (in the
fully buffered case), or at least outside of the curl wrapper itself
(in the receive-to-sink case). unfortunately this means we will have
to duplicate decompression logic for these two cases for time being,
but once the curl wrapper has been rewritten to return a real future
or Source we can deduplicate this logic again. the curl wrapper will
have to turn into a proper Source first and use decompression source
logic which also does not currently exist—only decompression *sinks*

Change-Id: I66bc692f07d9b9e69fe10689ee73a2de8d65e35c
2024-04-26 15:26:37 +00:00
eldritch horrors fb0996aaa8 filetransfer: remove dataCallback from interface
this is highly questionable. single-arg download calls will misbehave
with it set, and two-arg download calls will just overwrite it. being
an implementation detail this should not have been in the API at all.

Change-Id: I613772951ee03d8302366085f06a53601d13f132
2024-04-26 15:26:37 +00:00
eldritch horrors dfe3baea12 filetransfer: make two-arg download abstract
this lets each implementation of FileTransfer (of which currently only
the one exists at all) implement appropriate handling for its internal
behaviours that are not otherwise exposed. in curl this lets us switch
the buffer-full handling method from "block the entire curl thread" to
"pause just the one transfer", move the non-libcurl body decompression
out of the actual curl wrapper (which will let us eventually morph the
curl wrapper intto an actual source of Sources), and some other things

Change-Id: Id6d3593cde6b4915aab3e90a43b175c103cc3f18
2024-04-26 15:26:37 +00:00
Artemis Tosini c03de0df62 gc: Find roots using libproc on Darwin
Previously, the garbage collector found runtime roots on Darwin by
shelling out to `lsof -n -w -F n` then parsing the result.
However, this requires an lsof binary and can be extremely slow.

The official Apple lsof returns in a reasonable amount of time,
about 250ms in my tests, but the lsof packaged in nixpkgs is quite slow,
taking about 40 seconds to run the command.

Using libproc directly is about the same speed as Apple lsof,
and allows us to reënable several tests that were disabled on Darwin.

Change-Id: Ifa0adda7984e13c15535693baba835aae79a3577
2024-04-25 23:24:21 -04:00
eldritch horrors 5420b3afd6 filetransfer: drop errorSink
just accumulate error data into result.data as we would for successful
transfers without a dataCallback. errorSink and data would contain the
same data in error cases anyway, so splitting them is not very useful.

Change-Id: I00e449866454389ac6a564ab411c903fd357dabf
2024-04-25 01:33:22 +02:00
eldritch horrors 5e69f8aa3d filetransfer: restore http status line reporting
this was broken in 75b62e5260.

Change-Id: If8583e802afbcde822623036bf41a9708fbc7c8d
2024-04-25 01:33:08 +02:00
eldritch horrors 38442e3123 filetransfer: remove decompress request parameter
this is never read.

Change-Id: I4c46f140519843a21e452958900e81edd2f78be2
2024-04-25 01:33:08 +02:00
Artemis Tosini 7114b0465a Merge "libstore: Create platform LocalStore subclasses" into main 2024-04-24 15:35:32 +00:00
Artemis Tosini b247ef72dc libstore: Create platform LocalStore subclasses
This creates new subclasses of LocalStore for each OS to include
platform-specific functionality. Currently this just includes garbage
collector roots but it could be extended to sandboxing as well.

In order to make sure that the generic LocalStore is not accidentally
constructed, its constructor is protected. A Fallback is provided which
implements no functionality except constructors.

Change-Id: I836a28e90b68309873f75afb83e0f1b2e2c89fb3
2024-04-23 16:17:05 +00:00
Qyriad be4a3168c9 Merge changes Ia3e7b1e6,If09be814 into main
* changes:
  meson: flip the switch!!
  meson: fix cross compilation
2024-04-23 11:12:09 +00:00
Qyriad 05e3b1d39e meson: fix cross compilation
This should fix cross compilation in the base case, but this is
difficult to test as cross compilation is broken in many different
places right now. This should bring Meson back up to cross parity with
the Make buildsystem though.

Change-Id: If09be8142d1fc975a82b994143ff35be1297dad8
2024-04-22 21:41:58 -06:00
eldritch horrors 86bfede948 libstore: use curl functions for reading headers
don't reimplement header parsing. this was only really needed due to the
ancient github bug we no longer care about, everything else we have done
in custom code can also be done using curl itself. doing this also fixes
possible sources of header smuggling (because the header function didn't
unfold headers and we'd trim them before parsing, which would've made us
read contents of one header as a fully formed header in itself). this is
a slight behavior change because we now honor only the first instance of
a given header where previous behavior was to honor either the last or a
combination of all of them (accept-ranges was logical-or'd by accident).

Change-Id: I93cb93ddb91ab98c8991f846014926f6ef039fdb
2024-04-23 01:04:56 +00:00
eldritch horrors 257d7ffa7b libstore: remove github etag workaround
this was a workaround for a *github* bug that happend *in 2015*.
not only is github no longer buggy, it shouldn't have been nix's
responsibility to work around these bugs like this to begin with

while we're at it we'll also remove another workaround—again for
github specifically and again for etag handling—from 2021 that's
also not needed any more. future workarounds for serverside bugs
should probably come with an expiration date that mutates into a
build warning after a while, otherwise this *will* happen again.

Change-Id: I74f739ae3e36d40350f78bebcb5869aa8cc9adcd
2024-04-23 01:04:56 +00:00
eldritch horrors ff9a4fc336 libstore: use curl_multi_{poll,wakeup}
the previous solution to the wakeup problem (adding a pipe and passing
it as an additional fd to curl_multi_wait) worked, but there have been
builtin alternatives for this since 2020. not only do these save code,
they're also a lot more likely to work natively on windows when needed

Change-Id: Iab751b900997110a8d15de45ea3ab0c42f7e5973
2024-04-22 21:37:20 +00:00
eldritch horrors e5903aab65 libstore: remove ancient libcurl feature checks
the oldest version checked for here is 7.47, which was released in
2016. it's probably safe to say that we do not need these any more

Change-Id: I003411f6b2ce6d56f7ca337390df3ea86bd59a99
2024-04-22 19:45:22 +00:00
puck c8c838381d Merge "Fix exportReferencesGraph when given store subpath" into main 2024-04-21 15:37:59 +00:00
puck 272c2ff15f remove extraneous cache entry from github fetcher
This isn't necessary, as it's already covered by the tarball fetcher's
cache.

Change-Id: I85e35f5a61594f27b8f30d82145f92c5d6559e1f
2024-04-21 10:46:05 +00:00
Alyssa Ross c1319831fb Fix exportReferencesGraph when given store subpath
With Nix 2.3, it was possible to pass a subpath of a store path to
exportReferencesGraph:

	with import <nixpkgs> {};

	let
	  hello = writeShellScriptBin "hello" ''
	    echo ${toString builtins.currentTime}
	  '';
	in

	writeClosure [ "${hello}/bin/hello" ]

This regressed with Nix 2.4, with a very confusing error message, that
presumably indicates it was unintentional:

	error: path '/nix/store/3gl7kgjr4pwf03f0x70dgx9ln3bhl7zc-hello/bin/hello' is not in the Nix store

(cherry picked from commit 0774e8ba33c060f56bad3ff696796028249e915a)
Change-Id: I00920fb33077b831a1bb4a1b68d515ba8c3c2a69
2024-04-21 10:27:32 +00:00
Qyriad 111db8b38f meson: correctly embed sandbox shell when asked
Change-Id: I2f6c0d42245204a516d2e424eea26a6391e975ad
2024-04-18 16:15:58 -06:00
Qyriad 077f45ee38 meson: correctly set -DSANDBOX_SHELL if we have it
The statically embedded busybox is not required for Lix to work, but
package.nix explicitly sets this, which was accidentally being ignored.

Change-Id: Ieeff830ac7d1f5fabe84d1a6cfd82f13d79035bf
2024-04-18 10:45:27 -06:00
Ilya K 6d79aa3d70 Merge "libstore/build: set NO_NEW_PRIVS for the sandbox" into main 2024-04-16 05:33:41 +00:00
Qyriad a41abb4594 fix probable format bug in DerivationGoal::buildDone
Either the contents of `line` could cause format errors, or this usage
is Technically safe. However, I trust nothing, especially with
boost::format.

Change-Id: I07933b20bde3b305a6e5d61c2a7bab6ecb042ad9
2024-04-15 23:09:40 +00:00
Qyriad 4e68deef80 abort with a descriptive message on bad HintFmt usage
Change-Id: Ic2f05572042343a8160fd971394372f5f2706fc4
2024-04-15 23:09:16 +00:00
Ilya K effc28f6f5 libstore/build: set NO_NEW_PRIVS for the sandbox
Change-Id: I711f64e2b68495ed9c85c1a4bd5025405805e43a
2024-04-15 10:25:29 +03:00
Qyriad 80bbfe2034 don't throw an exception for the trivial case of isStorePath()...
Previously if isStorePath() was called on anything other than a
top-level /nix/store/some-path, it would throw a BadStorePath exception.
This commit duplicates the absolutely trivial check, into
maybeParseStorePath(), and leaves exception throwing to
parseStorePath(), the function that assumes you're already giving a
valid path instead of the one whose purpose is to check if its valid or
not...

Change-Id: I8dda548f0f88d14ca8c3ee927d64e0ec0681fc7b
2024-04-14 21:08:07 +00:00
Qyriad ddb4d3fa4c Merge "don't boost::to_few_args when an eval cached string type errors" into main 2024-04-14 21:07:47 +00:00
Ilya K b469c6509b libstore/build: just copy the magic /etc files into the sandbox
Saves us a bunch of thinking about how to handle symlinks, and prevents
the DNS config from changing on the fly under the build, which may or may
not be a good thing?

Change-Id: I071e6ae7e220884690b788d94f480866f428db71
2024-04-13 12:43:19 +03:00
Ilya K d363bc2f12 Merge "Merge pull request #10456 from NixOS/fixpermdeniedbind" into main 2024-04-11 19:08:33 +00:00
eldritch horrors e4a8c01bdf Merge changes Iedf46484,I76b51eac,I6a084827,I60193f9f into main
* changes:
  meson: fix log-dir
  manual: build docs with dummy envs
  libcmd: install generated headers as well
  docs: redo content generation for mdbook and manual
2024-04-11 14:33:16 +00:00
Ilya K d106bb553b Merge "Merge pull request #10362 from obsidiansystems/maybeLstat" into main 2024-04-11 13:45:46 +00:00