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The previous clang-tidy invocation missed some header files, which has
now been rectified.
Change-Id: I31547754fbf52f439dc7aeefb08ab90bd50c4156
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1831
Reviewed-by: glittershark <grfn@gws.fyi>
Tested-by: BuildkiteCI
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Change (mostly) created via:
fd . -e hh -e cc | parallel clang-tidy -p ~/builds/nix --fix "'--checks=-*,modernize-use-using'"
Change-Id: I90ad6e64a5399f2005dfb9956074ec51c2c78cea
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1830
Tested-by: BuildkiteCI
Reviewed-by: glittershark <grfn@gws.fyi>
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Make Store::buildPaths return a Status with [[nodiscard]] rather than
throwing exceptions to signal failure. This is the beginning of a long
road to refactor the entire store API to be status/statusor based
instead of using exceptions.
Change-Id: I2e32371c95a25b87ad129987c217d49c6d6e0c85
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1745
Tested-by: BuildkiteCI
Reviewed-by: kanepyork <rikingcoding@gmail.com>
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Invocations of the MakeError macro that were not followed by a
semicolon messed up indentation in the next lines.
Change-Id: I03d7d1443f062a38af2c7da3da8928e0ed05e274
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1708
Tested-by: BuildkiteCI
Reviewed-by: kanepyork <rikingcoding@gmail.com>
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Aded a few test cases covering the scanForReferences function, which had
been accidentally broken in 976a36c (which is now partially-reverted).
As part of this, since the test needed to generate hashes for store
paths, the logic in MakeStorePath to compress a sha256 hash down to 20
bytes and convert it to base32 has been extracted to a member function
on the Hash class.
Fixes: #34
Change-Id: Ie2d914688a80f42d0234d351a7cc0714fd15709e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1698
Tested-by: BuildkiteCI
Reviewed-by: kanepyork <rikingcoding@gmail.com>
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Factor out the shared utilities for interacting with protobufs/grpc from
libstore to a proto.hh header in libproto.
Change-Id: I1cb8d94867d5d4b63a9994be0b53f8f612eb8e3a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1691
Tested-by: BuildkiteCI
Reviewed-by: kanepyork <rikingcoding@gmail.com>
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Command run: jq <compile_commands.json -r 'map(.file)|.[]' | grep -v '/generated/' | parallel clang-tidy -p compile_commands.json -checks=-*,google-readability-casting --fix
Manual fixes applied in src/nix-env/nix-env.cc, src/libstore/store-api.cc
Change-Id: I406b4be9368c557ca59329bf6f7002704e955f8d
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1557
Tested-by: BuildkiteCI
Reviewed-by: glittershark <grfn@gws.fyi>
Reviewed-by: tazjin <mail@tazj.in>
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The behavior to return a list containing a single empty string when
provided an empty string is a behavior that absl inherited from legacy
code. However, the behavior expected by legacy code in Nix is the
behavior provided by the SkipEmpty option. Switch all calls to use
SkipEmpty, except for the call already using SkipWhitespace.
See also commit 26a59482d2427f640893517f1b24dd650a5bd5da, with the
partly-prophetic message: "there may be other places we need to
fix this as well."
Change-Id: I6e94856a12cfb1b7e4a3b4e221769ed446648861
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1687
Tested-by: BuildkiteCI
Reviewed-by: glittershark <grfn@gws.fyi>
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Implement the AddToStore RPC client method, which uses an
AddToStorePathWriterSink (the dual of the AddToStorePathReaderSource on
the server side) to hook into the dumpPath machinery (which we should
refactor not to use sinks or sources, but not yet) and write dumped
paths as binary data over gRPC. With this commit and sandboxing
disabled, the following derivation builds cleanly:
derivation {
name = "test";
builder = ./build.sh;
system = "x86_64-linux";
}
where build.sh has chmod +x and contains:
#!/bin/sh
echo 1 > $out
Change-Id: I94cab86f0825a3a9993262a9807130645c13bf44
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1638
Reviewed-by: kanepyork <rikingcoding@gmail.com>
Tested-by: BuildkiteCI
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This reverts part of commit 976a36c2e482f416acd79a624e6d96cce2564b5b,
which was causing scanForReferences to hang indefinitely. I'm not sure
what the original intent of the commit was since there's not really much
of a commit message on it, but with this I am able to fully realise
derivations.
Change-Id: I620e892e2fe2244f066512286b086b3dd8f8f6c0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1635
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
Reviewed-by: kanepyork <rikingcoding@gmail.com>
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This reverts commit ef54f5da9fa30b5c302f2a49595ee5d041f9706a.
Resolved conflicts:
third_party/nix/src/libexpr/eval.cc
third_party/nix/src/libstore/builtins/fetchurl.cc
third_party/nix/src/libstore/references.cc
third_party/nix/src/libutil/hash.cc
third_party/nix/src/nix-daemon/nix-daemon.cc
Change-Id: Ib9cf6e96a79a23bde3983579ced3f92e530cb011
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1547
Reviewed-by: glittershark <grfn@gws.fyi>
Tested-by: BuildkiteCI
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Implement the proto handler for AddToStore, which adds a nix path to the
store. This is implemented by adding a new (probably
soon-to-be-generalized) Source concretion that wraps a grpc ServerReader
for the stream of data we're receiving from the client - this is less
than ideal, as it's perpetuating the source/sink thing that's going on
and storing entire nars in memory, but is at the very worst an
incremental step towards a functioning nix that we can refactor in the
future.
Paired-With: Perry Lorier <isomer@tvl.fyi>
Paired-With: Vincent Ambo <mail@tazj.in>
Change-Id: I48db734e7460a47aee4a85dd5137b690980859e3
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1441
Tested-by: BuildkiteCI
Reviewed-by: kanepyork <rikingcoding@gmail.com>
Reviewed-by: tazjin <mail@tazj.in>
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Fixes a crash in the self-hosting instantiate test:
NIX_REMOTE="$(mktemp -d)" nix-instantiate -E 'let depot = import ./default.nix {}; in depot.third_party.nix.outPath'
Change-Id: If99494aa07ec248d3894d4709ab0fde7fa81aff3
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1508
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI
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The use of `unwrap_throw` can be used as a later grep target.
Change-Id: I8c54ed90c4289f07aecb8a1393dd10204c8bce4e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1493
Reviewed-by: glittershark <grfn@gws.fyi>
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI
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Fixup for CL 1492 (addcba11b05500ba28ade309de6bd53f8153a6c4)
Additionally, add a test to verify functionality of HashSink.
Change-Id: I2a74b925a1b93ed4d3add29021d759c93e813424
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1507
Tested-by: BuildkiteCI
Reviewed-by: glittershark <grfn@gws.fyi>
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Change-Id: Ib2aaf42c8b234ee343c4653eb03f328c113dea86
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1492
Tested-by: BuildkiteCI
Reviewed-by: glittershark <grfn@gws.fyi>
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Additionally, add IsValidBase16() to restore the behavior of rejecting invalid base16, which absl's HexStringToBytes does not do.
Change-Id: I777a36f5dc787aa54a2aa316d6728f68da129768
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1484
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
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Change-Id: I3b34e3e17a751e225831ae599c6c6bb782a25679
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1486
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
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Change-Id: I265e763393422ee1881653527c91024458060825
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1432
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
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Implement the main function for the new, proto-based nix daemon. This
mostly replicates the behavior of the previous nix daemon - it starts a
grpc server listening on the same nix socket path and supports the same
set of options - with the exception of --stdio, which has been renamed
to --pipe and documented in the man page.
Change-Id: Ib729283c1d5d35c0e1b0a968bc1f052f5527f2d7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1356
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
Reviewed-by: kanepyork <rikingcoding@gmail.com>
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Replace the custom, rather questionable base64 implementation with
absl::Base64{Une,E}scape. To make sure that the custom implementation
was doing the same thing I've also added a test covering
nix::Hash::to_string, which was one function that used it - the test
passed prior to the replacement, and continued to pass afterwards.
The previous base64Decode function threw an exception on failure - to
avoid going too far down the rabbit hole I've replicated that
functionality at all call sites, but this should be replaced with more
sensible error handling such as StatusOr eventually.
Also, before this change:
❯ nix eval -f . users.tazjin.emacs.outPath
"/nix/store/g6ri2q8nra96ix20bcsc734r1yyaylb1-tazjins-emacs"
And after:
❯ ./result/bin/nix eval -f . users.tazjin.emacs.outPath
"/nix/store/g6ri2q8nra96ix20bcsc734r1yyaylb1-tazjins-emacs"
Change-Id: Id292ffbb82fe808f3f1b34670afbe7b8c13ad615
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1385
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI
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The use of vfork() in Nix is entirely illegal. Quote:
If the process created by vfork() returns from the function in which vfork() was
called, or calls any other function before successfully calling _exit() or
one of the exec*() family of functions, the behavior is undefined.
-- Linux man-pages, release 5.05
Add a TODO to use the higher-performance variants of clone() on Linux when it
is available.
Change-Id: I42370e1568ad6e2d00d70d0b66c8aded8f1288bb
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1418
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
Reviewed-by: Alyssa Ross <hi@alyssa.is>
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nixutil depends on bzip2, lzma, boost::context, brotli{enc,dec}, and
openssl, but wasn't directly linking to them. This was causing linker
errors in a test that only depended on nixutil.
Change-Id: I60e77ea7b18b08e2946fcf9176ae0f355cd71844
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1384
Tested-by: BuildkiteCI
Reviewed-by: kanepyork <rikingcoding@gmail.com>
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This compiles under `-Wall -Werror`.
The largest chunk of this change is `final` qualifiers for the various
Nix CLI command structs, which inherit from a Command class that has
more virtual functions than are implemented by each command.
Change-Id: I0925e6e1a39013f026773db5816e4a77d50f3b4a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1294
Tested-by: BuildkiteCI
Reviewed-by: isomer <isomer@tvl.fyi>
Reviewed-by: kanepyork <rikingcoding@gmail.com>
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Removes the verbosity enum, which is no longer actively used anywhere
other than a daemon protocol implementation bit that doesn't actually
work.
Since the verbosity was marked deprecated, this removes one of the
last remaining warnings.
Change-Id: Iaee9d1d6c14b30daac83bb44bcacff32a0e07fb0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1289
Tested-by: BuildkiteCI
Reviewed-by: glittershark <grfn@gws.fyi>
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nix:AttrName was one of the few classes that relied on the default
constructor of nix::Symbol (which I am trying to remove in a separate
change).
The class essentially represents the name of an attribute in a set,
which is either just a string expression or a dynamically evaluated
expression (e.g. string interpolation).
Previously it would be constructed by only setting one of the fields
and defaulting the other, now it is an explicit std::variant.
Note that there are several code paths where not all eventualities are
handled and this code is bug-for-bug compatible with those, except
that unknown conditions (which should never work) are now throwing
instead of silently doing ... something.
The language tests pass with this change, and the depot derivations
that I tested with evaluated successfully.
Change-Id: Icf1ee60a5f8308f4ab18a82749e00cf37a938a8f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1138
Reviewed-by: edef <edef@edef.eu>
Reviewed-by: glittershark <grfn@gws.fyi>
Tested-by: BuildkiteCI
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Implements the fairly common lambda overload class used for std::visit
over variants and other things that require groups of callables.
Change-Id: Ia7448b7e1bd349b4909974758e6e6303a80d86d7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1137
Tested-by: BuildkiteCI
Reviewed-by: glittershark <grfn@gws.fyi>
Reviewed-by: edef <edef@edef.eu>
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Change-Id: I4f44e6050fc5121072f4cde7758defe2dcbd4e92
Reviewed-on: https://cl.tvl.fyi/c/depot/+/552
Reviewed-by: tazjin <mail@tazj.in>
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Change-Id: I5ab040a62e123c57fe712b252fbf84fe5a8bc026
Reviewed-on: https://cl.tvl.fyi/c/depot/+/547
Reviewed-by: tazjin <mail@tazj.in>
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This ensures that we install both glog's .a and all the .so files we
generate into a single consistent output lib path (which is, err,
lib64, but whatever).
Change-Id: Ib6ac6eacf5f56e4b719cfb586db731efc122c31b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/544
Reviewed-by: tazjin <mail@tazj.in>
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Change-Id: I87eb6e59782d720015d351d8829dc7b8688e01f2
Reviewed-on: https://cl.tvl.fyi/c/depot/+/543
Reviewed-by: tazjin <mail@tazj.in>
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Completes the switch from Meson to CMake for the core build system in
Nix.
Meson was added originally because someone else had already done the
work for integrating it in Nix and it was an upgrade from the previous
setup.
However over time it became clear that Meson is not quite mature
enough for projects like Nix that have occasionally peculiar
configuration constraints.
Some issues encountered with Meson (some of these are due to the Meson
setup in Nix):
* Difficulty with generating correct compile_commands.json for
external tools like clangd
* Difficulty linking to libc++ when using clang
* Ugly shell invocations for certain parts of the build system (I want
these to be gone!!!)
This CMake setup mimics the Meson configuration, but there are some
differences (some temporary):
* headers are now included separately for each library (see a previous
commit that changes includes appropriately)
* autoheaders-style configuration is currently hardcoded. Before
blindly copying this I want to evaluate how much of it actually exists
for portability concerns that I don't have (such as support for OS
X).
* Nix is built with libc++ by default.
* [libstore] SQL schema is now inlined via a generated header, not an
included string literal
Abseil is still built as part of this build, rather than an external
dependency, because it chokes on differently configured compiler
invocations.
Note that because of the move to libc++ an unwanted behaviour is
introduced: glog log messages no longer have a body. I have yet to
debug what is going on there.
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Previously all includes were anchored in one global mess of header
files. This moves the includes into filesystem "namespaces" (if you
will) for each sub-package of Nix.
Note: This commit does not introduce the relevant build system changes.
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This function was a custom (and inefficient in the case of
single-character delimiters) string splitter which was used all over
the codebase. Abseil provides an appropriate replacement function.
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Uses the equivalent absl::StartsWith and absl::EndsWith functions
instead.
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Replaces these functions with corresponding functions from Abseil,
namely absl::StripAsciiWhitespace and absl::SimpleAtoi.
In the course of doing this some minor things I encountered along the
way were also refactored.
This also changes the signatures of the various custom readFile
functions to use absl::string_view types.
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See previous commit for more details on why.
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It is considered bad form to use things from includes in headers, as
these directives propagate to everywhere else and can make it
confusing.
types.hh (which is includes almost literally everywhere) had some of
these directives, which this commit removes.
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This project will be dropping OS X support until the core is simplified.
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Suppose I have a path /nix/store/[hash]-[name]/a/a/a/a/a/[...]/a,
long enough that everything after "/nix/store/" is longer than 4096
(MAX_PATH) bytes.
Nix will happily allow such a path to be inserted into the store,
because it doesn't look at all the nested structure. It just cares
about the /nix/store/[hash]-[name] part. But, when the path is deleted,
we encounter a problem. Nix will move the path to /nix/store/trash, but
then when it's trying to recursively delete the trash directory, it will
at some point try to unlink
/nix/store/trash/[hash]-[name]/a/a/a/a/a/[...]/a. This will fail,
because the path is too long. After this has failed, any store deletion
operation will never work again, because Nix needs to delete the trash
directory before recreating it to move new things to it. (I assume this
is because otherwise a path being deleted could already exist in the
trash, and then moving it would fail.)
This means that if I can trick somebody into just fetching a tarball
containing a path of the right length, they won't be able to delete
store paths or garbage collect ever again, until the offending path is
manually removed from /nix/store/trash. (And even fixing this manually
is quite difficult if you don't understand the issue, because the
absolute path that Nix says it failed to remove is also too long for
rm(1).)
This patch fixes the issue by making Nix's recursive delete operation
use unlinkat(2). This function takes a relative path and a directory
file descriptor. We ensure that the relative path is always just the
name of the directory entry, and therefore its length will never exceed
255 bytes. This means that it will never even come close to AX_PATH,
and Nix will therefore be able to handle removing arbitrarily deep
directory hierachies.
Since the directory file descriptor is used for recursion after being
used in readDirectory, I made a variant of readDirectory that takes an
already open directory stream, to avoid the directory being opened
multiple times. As we have seen from this issue, the less we have to
interact with paths, the better, and so it's good to reuse file
descriptors where possible.
I left _deletePath as succeeding even if the parent directory doesn't
exist, even though that feels wrong to me, because without that early
return, the linux-sandbox test failed.
Reported-by: Alyssa Ross <hi@alyssa.is>
Thanks-to: Puck Meerburg <puck@puckipedia.com>
Tested-by: Puck Meerburg <puck@puckipedia.com>
Reviewed-by: Puck Meerburg <puck@puckipedia.com>
(cherry picked from commit c05e20daa1abb3446e378331697938b78af2b3d7)
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Replaces most uses of `string` with `std::string`.
This came up because I removed the "types.hh" import from
"symbol-table.hh", which percolated through a bunch of files where
`string` was suddenly no longer defined ... *sigh*
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This applies the performance fixes listed here:
https://clang.llvm.org/extra/clang-tidy/checks/list.html
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This applies the readability fixes listed here:
https://clang.llvm.org/extra/clang-tidy/checks/list.html
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This applies the modernization fixes listed here:
https://clang.llvm.org/extra/clang-tidy/checks/list.html
The 'modernize-use-trailing-return-type' fix was excluded due to my
personal preference (more specifically, I think the 'auto' keyword is
misleading in that position).
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These make it possible to link to Abseil strings.
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Implicit constructors can be confusing, especially in a codebase that
is already as unintentionally obfuscated as this one.
https://google.github.io/styleguide/cppguide.html#Explicit_Constructors
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