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15735 commits

Author SHA1 Message Date
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
Maximilian Bosch ce76d3eab2 Merge "justfile: allow passing args to meson compile" into main 2024-04-26 07:45:22 +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
Maximilian Bosch ecad3632cc justfile: allow passing args to meson compile
My main motivation for this change is to limit the amount of compile
jobs to make sure my machine is still usable for something else when
building a fresh Lix locally.

Also made `build` a dependency of `install`: this is analogous to
`make install` in CppNix where this both recompiles changed files and
installs the artifacts into `outputs/out`. May be a little more pleasant
to work with that, especially when you're used to contributing to
CppNix.

Change-Id: I321e2b0daf1c5e20f82c04e2dd158056c80ed86c
2024-04-25 14:26:38 +02:00
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
Qyriad f24223931d meson: remove unnecessary parts of cross file
Meson cross files layer, the last value of each key takes effect.

https: //mesonbuild.com/Machine-files.html#loading-multiple-machine-files
Change-Id: I22d886f71cd51f0ce520d3fc22aed4bcf074bb91
2024-04-23 10:20:20 -06:00
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 b913a939b0 meson: flip the switch!!
This commit makes Meson the default buildsystem for Lix.
The Make buildsystem is now deprecated and will be removed soon, but has
not yet, which will be done in a later commit when all seems good. The
mesonBuild jobs have been removed, and have not been replaced with
equivalent jobs to ensure the Make buildsystem still works.

The full, new commands in a development shell are:

$ meson setup ./build "--prefix=$out" $mesonFlags

(A simple `meson setup ./build` will also build, but will do a different
thing, not having the settings from package.nix applied.)

$ meson compile -C build
$ meson test -C build --suite=check
$ meson install -C build
$ meson test -C build --suite=installcheck

(Check and installcheck may both be done after install, allowing you to
omit the --suite argument entirely, but this is the order package.nix
runs them in.)

If tests fail and Meson helpfully has no output for why, use the
`--print-error-logs` option to `meson test`. Why this is not the default
I cannot explain.

If you change a setting in the buildsystem, most cases will
automatically regenerate the Meson configuration, but some cases, like
trying to build a specific target whose name is new to the buildsystem
(e.g. `meson compile -C build src/libmelt/libmelt.dylib`, when
`libmelt.dylib` did not exist as a target the last time the buildsystem
was generated), then you can reconfigure using new settings but
existing options, and only recompiling stuff affected by the changes:

$ meson setup --reconfigure build

Note that changes to the default values in `meson.options` or in the
`default_options :` argument to project() are NOT propagated with
`--reconfigure`.

If you want a totally clean build, you can use:

$ meson setup --wipe build

That will work regardless of if `./build` exists or not.

Specific, named targets may be addressed in
`meson build -C build <target>` with the "target ID" if there is one,
which is the first string argument passed to target functions that
have one, and unrelated to the variable name, e.g.:

libexpr_dylib = library('nixexpr', …)

can be addressed with:

$ meson compile -C build nixexpr

All targets may be addressed as their output, relative to the build
directory, e.g.:

$ meson compile -C build src/libexpr/libnixexpr.so

But Meson does not consider intermediate files like object files
targets. To build a specific object file, use Ninja directly and
specify the output file relative to the build directory:

$ ninja -C build src/libexpr/libnixexpr.so.p/nixexpr.cc.o

To inspect the canonical source of truth on what the state of the
buildsystem configuration is, use:

$ meson introspect

Have fun!

Change-Id: Ia3e7b1e6fae26daf3162e655b4ded611a5cd57ad
2024-04-22 21:41:58 -06:00
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
Qyriad 7063170d5f tests: add error messages to the asserts in tarball flakes test
In hopes of avoiding opaque error messages like the one in
https://buildbot.lix.systems/#/builders/49/builds/1054/steps/1/logs/stdio

Traceback (most recent call last):
  File "/nix/store/wj6wh89jhd2492r781qsr09r9wydfs6m-nixos-test-driver-1.1/bin/.nixos-test-driver-wrapped", line 9, in <module>
    sys.exit(main())
             ^^^^^^
  File "/nix/store/wj6wh89jhd2492r781qsr09r9wydfs6m-nixos-test-driver-1.1/lib/python3.11/site-packages/test_driver/__init__.py", line 126, in main
    driver.run_tests()
  File "/nix/store/wj6wh89jhd2492r781qsr09r9wydfs6m-nixos-test-driver-1.1/lib/python3.11/site-packages/test_driver/driver.py", line 159, in run_tests
    self.test_script()
  File "/nix/store/wj6wh89jhd2492r781qsr09r9wydfs6m-nixos-test-driver-1.1/lib/python3.11/site-packages/test_driver/driver.py", line 151, in test_script
    exec(self.tests, symbols, None)
  File "<string>", line 13, in <module>
AssertionError

Change-Id: Idd2212a1c3714ce58c7c3a9f34c2ca4313eb6d55
2024-04-22 16:13:36 -06:00
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
eldritch horrors a326344253 tests: unhaunt the flakes nixos tests
these should really wait for networks to come up, otherwise they can fail.

fixes #235

Change-Id: I08989e8bdb0de280df74660ac43983de5c34fa9d
2024-04-18 20:09:19 +00:00
Qyriad f9d08cc44c meson: embed source paths as relative to the source root and avoid ../src
Change-Id: Ifab83cb7a3bfde717a4d6032ede8be75dc61f2b1
2024-04-18 10:45:27 -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
Qyriad cf0744ceed Merge "build internal API docs with Meson" into main 2024-04-17 21:48:25 +00:00
Ilya K 6d79aa3d70 Merge "libstore/build: set NO_NEW_PRIVS for the sandbox" into main 2024-04-16 05:33:41 +00:00
Qyriad b81eec6ed5 build internal API docs with Meson
This commit adds the capability for building the Doxygen internal API
docs in the Meson buildsystem, and also makes doing so the default for
the internal-api-docs hydra job. Aside from the /nix-support directory,
which differed only by the hash part of a store path, the outputs of
hydraJobs.internal-api-docs before and after this commit were
bit-for-bit identical on my machine.

Change-Id: I98f0017891c25b06866c15f7652fe74f706ec8e1
2024-04-15 19:05:07 -06:00
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 8d15e6af4b Merge "libstore/build: just copy the magic /etc files into the sandbox" into main 2024-04-13 12:15:20 +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
Qyriad ded64e2822 Merge changes I60d8e6f7,Ic635687b into main
* changes:
  binary tarball: include cacert in root paths
  flake: factor out binary tarball into its own file
2024-04-12 13:24:47 +00:00
Qyriad a3be742bda binary tarball: include cacert in root paths
93cc06334 removed nss-cacert from the binary tarball, but they're
necessary for global compatibility (and for our installer). This is what
results in cacerts being in the default profile, so e.g. the daemon has
TLS certs without having to use the system ones.

There's a fallback behavior in the daemon script in case these wind up
missing from the profile, but we don't want to have to rely on that,
since the fallback fails if it doesn't recognize one of a handful of
distros.

Change-Id: I60d8e6f734469548e80d5f38113ef168f67cbf7d
2024-04-12 07:04:37 -06:00
Qyriad 629351163d flake: factor out binary tarball into its own file
Bit-for-bit identical, and this one is callPackage-able

Change-Id: Ic635687b0054e107271a9c24ae69101f5e0fba9e
2024-04-12 06:35:54 -06:00
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
eldritch horrors cd79b8d65a meson: fix log-dir
the make build system sets this with an extra /nix segment.

Change-Id: Iedf464843196faeae5b59698837faca3a4f23586
2024-04-11 13:36:04 +00:00
eldritch horrors adab839c98 manual: build docs with dummy envs
this was previously used because the macOS docs build would otherwise
pull files out of the host nix store. or something. not sure about it

Change-Id: I76b51eac1ebc5de5f00e2e4be086dd8db3eeb8e6
2024-04-11 13:36:04 +00:00
eldritch horrors f42678802c libcmd: install generated headers as well
these seem to have been forgotten.

Change-Id: I6a084827d087f8098c19b62f2060a874d87202a1
2024-04-11 13:36:04 +00:00
eldritch horrors 725f5cd358 docs: redo content generation for mdbook and manual
manpages can be rendered using the markdown output of mdbook, the rest
of the manual can generated out of the main doc/manual source tree. we
still use lowdown to actually render manpages instead of eg mdbook-man
because lowdown does generate reasonably good manpages (though that is
also somewhat debatable, but they're a lot better than mdbook-man).

doing this not only lets us drastically simplify the lowdown pipeline,
but also remove all custom {{#include}} handling since now mdbook does
all of it, even for the manpage builds. even the lowdown wrapper isn't
entirely necessary because lowdown can take all wrapper arguments with
command line flags rather than bits of input file content.

This also implements running mdbook in Meson, in order to generate the
manpages. The mdbook outputs are also installed in the usual location.

Co-authored-by: Qyriad <qyriad@qyriad.me>

Change-Id: I60193f9fd0f15d48872f071af35855cda2a0f40b
2024-04-11 13:32:06 +00:00
Théophane Hufschmitt 07b627cc6d Merge pull request #10456 from NixOS/fixpermdeniedbind
Fix adding symlink to the sandbox paths

(cherry-picked from commit da1e977bf48cff2a635034c85e7c13878e38efc2)

Change-Id: I221c85a38180800ec6552d2e86a88df48398fad8
2024-04-11 15:43:58 +03:00
John Ericson aeee22e5a1 Merge pull request #10362 from obsidiansystems/maybeLstat
Factor out `nix::maybeLstat`

(cherry-picked from commit 9b88e5284608116b7db0dbd3d5dd7a33b90d52d7)

Change-Id: Id890525e847c890fad6593c594772826ac4d1d50
2024-04-11 15:43:41 +03:00