Commit graph

9978 commits

Author SHA1 Message Date
Robert Hensing
9ddd0f2af8 Revert "StorePath: reject names starting with '.'"
This reverts commit 24bda0c7b3.
2024-01-27 11:18:03 +01:00
Robert Hensing
49b25ea85c refactor: Impure derivation type isPure -> isImpure
To quote the method doc:

Non-impure derivations can still behave impurely, to the degree permitted
by the sandbox. Hence why this method isn't `isPure`: impure derivations
are not the negation of pure derivations. Purity can not be ascertained
except by rather heavy tools.
2024-01-27 11:00:10 +01:00
John Ericson
b83a2fb6dd
Merge pull request #9776 from pennae/parser-refactor
Refactor the parser somewhat
2024-01-26 23:56:48 -05:00
John Ericson
365b831e6f
Minor formatting tweaks 2024-01-26 23:11:31 -05:00
John Ericson
1aec7771d4 Add missing #include for rlim_t
My local build in the shell was failing while CI was fine; not sure why
that is but having the include here is definitely more correct.

Per the POSIX spec, this is where it is supposed to be gotten
https://pubs.opengroup.org/onlinepubs/009695399/basedefs/sys/resource.h.html
2024-01-26 22:34:31 -05:00
Rebecca Turner
3a124d1e88
Increase stack size on macOS as well as Linux
The code works fine on macOS, but the default stack size we attempt to
set is larger than what my system will allow (Nix attempts to set the
stack size to 67108864, but the maximum allowed is 67092480), so I've
instead used the requested stack size or the maximum allowed, whichever
is smaller.

I've also added an error message if setting the stack size fails. It
looks like this:

> Failed to increase stack size from 8372224 to 67108864 (maximum
> allowed stack size: 67092480): Invalid argument
2024-01-26 09:40:41 -08:00
Valentin Gagarin
30bdee5c3b
update docs on fetchGit shallow clone behavior (#9704) 2024-01-26 17:26:08 +00:00
Théophane Hufschmitt
8df68a213f
Merge pull request #9849 from 13x1/patch-1
Fix typo in primops.cc (and therefore Nix docs)
2024-01-25 16:11:49 +01:00
lexi
08f38a3a40
Fix typo in primops.cc (and therefore Nix docs)
This also fixes the typo in the Nix docs at https://nixos.org/manual/nix/unstable/language/builtins.
2024-01-25 15:30:51 +01:00
John Ericson
a9e10a1dbd Make StoreConfig::getDefaultSystemFeatures a static method
This makes something in Hydra bit simpler. If someday the default
depends on the other config options, we can always change it back.
2024-01-24 21:34:31 -05:00
Robert Hensing
5b7bfd2d6b
Merge pull request #9754 from 9999years/print-value-when-coercion-fails
Print the value in `error: cannot coerce` messages
2024-01-24 12:48:39 +01:00
Théophane Hufschmitt
69d0ae27e3
Merge pull request #9841 from obsidiansystems/float-speed-factor
Convert `Machine::speedFactor` from a non-neg int to a non-neg float
2024-01-24 11:28:54 +01:00
John Ericson
1e24db6f9a Convert Machine::speedFactor from a non-neg int to a non-neg float
The short motivation is to match Hydra, so we can de-dup.

The long version is layed out in
https://github.com/NixOS/nix/issues/9840.
2024-01-24 01:03:07 -05:00
tomberek
1c260fa6d1
Merge pull request #9481 from iFreilicht/disallow-nix-search-without-search-terms
nix search: Disallow empty regex
2024-01-23 20:59:52 -05:00
tomberek
775d59f1fa
Merge pull request #8893 from 9999years/fix-8882
Log what `nix flake check` does
2024-01-23 20:38:23 -05:00
Rebecca Turner
83bb494a30
Print the value in error: cannot coerce messages
This extends the `error: cannot coerce a TYPE to a string` message
to print the value that could not be coerced. This helps with debugging
by making it easier to track down where the value is being produced
from, especially in errors with deep or unhelpful stack traces.
2024-01-23 15:15:41 -08:00
John Ericson
0aa85088de Factor out Machine::systemSupported
There's just enough logic (the `"builtin"` special case) that makes this
worthy of its own method.
2024-01-23 12:53:51 -05:00
John Ericson
870acc2892 Add API docs to Machine methods 2024-01-23 12:50:48 -05:00
John Ericson
739032762a Make Machine::systemTypes a set not vector
This is more conceptually correct (the order does not matter), and also
matches what Hydra already does.

(Nix and Hydra matching is needed for dedup
https://github.com/NixOS/hydra/issues/1164)
2024-01-23 12:30:26 -05:00
Eelco Dolstra
b6aee9a93f
Merge pull request #9833 from obsidiansystems/ssh-arg-split
Make `SSHMaster::startCommand` work on an args list
2024-01-23 14:34:41 +01:00
Robert Hensing
08bf2846df
Merge pull request #9653 from obsidiansystems/improve-parse-sink
Improve the `ParseSink` interface
2024-01-23 01:04:57 +01:00
John Ericson
6365bbfa81 Improve the FileSystemObjectSink interface
More invariants are enforced in the type, and less state needs to be
stored in the main sink itself. The method here is roughly that known as
"session types".

Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
2024-01-22 18:01:21 -05:00
John Ericson
966d6fcd01 ParseSink -> FileSystemObjectSink
Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
2024-01-22 18:01:18 -05:00
John Ericson
b71673109c Make SSHMaster::startCommand work on an args list
This avoids split-on-whitespace errors:

- No more `bash -c` needed

- No more `shellEscape` needed

- `remote-program` ssh store setting also cleanly supports args (e.g.
  `nix daemon`)

- `ssh` uses `--` to separate args for SSH from args for the command to
  run.

and will help with Hydra dedup.

Some code taken from #6628.

Co-Authored-By: Alexander Bantyev <balsoft@balsoft.ru>
2024-01-22 17:46:57 -05:00
Maximilian Bosch
81499a0b93
libexpr: print value of what is attempted to be called as function
Low-hanging fruit in the spirit of #9753 and #9754 (means 9999years did
all the hard work already).

This basically prints out what was attempted to be called as function,
i.e.

  map (import <nixpkgs> {}) [ 1 2 3 ]

now gives the following error message:

    error:
           … while calling the 'map' builtin
             at «string»:1:1:
                1| map (import <nixpkgs> {}) [ 1 2 3 ]
                 | ^

           … while evaluating the first argument passed to builtins.map

           error: expected a function but found a set: { _type = "pkgs"; AAAAAASomeThingsFailToEvaluate = «thunk»; AMB-plugins = «thunk»; ArchiSteamFarm = «thunk»; BeatSaberModManager = «thunk»; CHOWTapeModel = «thunk»; ChowCentaur = «thunk»; ChowKick = «thunk»; ChowPhaser = «thunk»; CoinMP = «thunk»;  «18783 attributes elided»}
2024-01-22 22:41:42 +01:00
Robert Hensing
5f72a97092
Merge pull request #9753 from 9999years/print-value-on-type-error
Print the value in `value is X while a Y is expected` error
2024-01-22 22:18:16 +01:00
John Ericson
e960b28230 Factor our ServeProto::BasicServerConnection::handshake
We'll need this for unit testing.

Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
2024-01-22 12:43:11 -05:00
John Ericson
4a5ca576da Factor out ServeProto::BasicClientConnection::handshake Hydra to share 2024-01-22 12:43:11 -05:00
John Ericson
4580bed3e4 LegacySSHStore::openConnection move more logic inside catch block
Broader error handling logic is more robust.
2024-01-22 12:43:11 -05:00
John Ericson
ce2f714e6d Start factoring out the serve protocol for Hydra to share
Factor out `ServeProto::BasicClientConnection` for Hydra to share

- `queryValidPaths`: Hydra uses the lock argument differently than Nix,
  so we un-hard-code it.

- `buildDerivationRequest`: Just the request half, as Hydra does some
  things between requesting and responding.

Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
2024-01-22 12:43:03 -05:00
Rebecca Turner
cb7fbd4d83
Print value on type error
Adds the failing value to `value is <TYPE> while a <TYPE> is expected`
error messages.
2024-01-22 08:56:02 -08:00
John Ericson
316e50cc7c Fix if...if...else ambiguity
This can be parsed two ways. Add a pair of braces so it must be parsed
the intended way.
2024-01-22 10:33:40 -05:00
John Ericson
176dcd5c61
Merge pull request #9626 from jvns/locked-input
Make fetchTree locked input error message clearer
2024-01-22 09:31:59 -05:00
pennae
80b84710b8
Update src/libexpr/eval.cc
Co-authored-by: John Ericson <git@JohnEricson.me>
2024-01-22 15:15:53 +01:00
John Ericson
b2066c3574
Merge pull request #9521 from fricklerhandwerk/conf-reword-max-jobs
reword description of the `max-jobs` setting
2024-01-22 08:29:12 -05:00
Théophane Hufschmitt
c8d33bca8d
Merge pull request #9822 from obsidiansystems/algo-vs-hash-algo
Start standardizing hash algo flags
2024-01-22 11:08:24 +01:00
Théophane Hufschmitt
f51409cf98
Merge pull request #9805 from yshui/prefetch-unpack
Add --unpack to nix store prefetch-file
2024-01-22 10:51:50 +01:00
John Ericson
202c5e2afc Start standardizing hash algo flags
Do this if we want to do `--hash-algo` everywhere, and not `--algo` for
hash commands.

The new `nix hash convert` is updated. Deprecated new CLI commands are
left as-is (`nix hash path` needs to be redone and is also left as-is).
2024-01-20 17:29:35 -05:00
John Ericson
a93b204c27
Merge pull request #9348 from obsidiansystems/json-formats
Document JSON formats
2024-01-20 17:22:39 -05:00
John Ericson
edf3ecc497 Document JSON formats
Good to document these formats separately from commands that happen to
use them.

Eventually I would like this and `builtins.derivation` to refer to a
store section on derivations that is authoritative, but that doesn't yet
exist, and will take some time to make. So I think we're just best off
merging this now as is.

Co-authored-by: Valentin Gagarin <valentin.gagarin@tweag.io>
2024-01-20 17:03:47 -05:00
Rebecca Turner
d75a5f427a
Print how many checks are run 2024-01-20 00:04:06 -08:00
Rebecca Turner
9404ce36e4
Print derivation paths
Also be more consistent with quotes around attribute paths
2024-01-20 00:04:05 -08:00
Rebecca Turner
49221493e2
Log what nix flake check does
There's still room for improvement, but this produces much more
informative output with `-v`:

```
$ nix flake check -v
evaluating flake...
checking flake output 'checks'...
checking derivation checks.aarch64-darwin.ghcid-ng-tests...
checking derivation checks.aarch64-darwin.ghcid-ng-clippy...
checking derivation checks.aarch64-darwin.ghcid-ng-doc...
checking derivation checks.aarch64-darwin.ghcid-ng-fmt...
checking derivation checks.aarch64-darwin.ghcid-ng-audit...
checking flake output 'packages'...
checking derivation packages.aarch64-darwin.ghcid-ng...
checking derivation packages.aarch64-darwin.ghcid-ng-tests...
checking derivation packages.aarch64-darwin.default...
checking flake output 'apps'...
checking flake output 'devShells'...
checking derivation devShells.aarch64-darwin.default...
running flake checks...
warning: The check omitted these incompatible systems: aarch64-linux, x86_64-darwin, x86_64-linux
Use '--all-systems' to check all.
```
2024-01-20 00:02:35 -08:00
John Ericson
356352c370 Add missing --hash-algo flag to nix store add 2024-01-19 23:11:18 -05:00
Robert Hensing
382fa51ff0
Merge pull request #9794 from hercules-ci/queryPathInfoFromClientCache
refactor: Extract `Store::queryPathInfoFromClientCache`
2024-01-19 17:33:52 +01:00
Robert Hensing
d19627e8b4 refactor: Remove throw from queryPathInfoFromClientCache
Return a value instead of throwing.

Rather than the more trivial refactor of wrapping the return value in
another std::optional, we retain the meaning of the outer optional:
"we know at least something."

So we have changed:
return nullopt    -> return nullopt
throw InvalidPath -> return make_optional(nullptr)
return vpi        -> return make_optional(vpi)
2024-01-19 17:01:19 +01:00
Robert Hensing
8983ee8b2e refactor: Un-callback transform Store::queryPathInfoFromClientCache
This part of the code was not necessarily callback based.
Removing CPS is always nice; particularly if there's no loss of
functionality, like here.
2024-01-19 17:01:19 +01:00
Yuxuan Shui
75a6e6dd0e Add --unpack to nix store prefetch-file 2024-01-19 15:53:45 +00:00
Théophane Hufschmitt
10165c7593
Merge pull request #9811 from DavHau/fix-git-auth
fetchTree/fetchGit: re-enable shallow fetching
2024-01-19 16:14:41 +01:00
John Ericson
57d6284eb7
Merge pull request #9812 from NixOS/remove-n-shorthand-for---mode
Remove a nonsensical shorthand flag in `nix store add`
2024-01-19 08:34:43 -05:00
DavHau
bc00fa4647 fetchTree/fetchGit: re-enable shallow fetching
Add several tests for git fetching:
- shallow-cache-separation: can fetch the same repo shallowly and non-shallowly
- shallow-ignore-ref: ensure that ref gets ignored when shallow=true is set
- ssh-shallow: can fetch a git repo via ssh using shallow=1
2024-01-19 20:30:47 +07:00
Robert Hensing
d762caff46
Merge pull request #9806 from hercules-ci/fix-git-auth
Fix git auth
2024-01-19 13:47:52 +01:00
Théophane Hufschmitt
28d7db249a
Remove a nonsensical shorthand flag in nix store add
`-n` was an alias for `--mode`, but that seems to just be a copy-paste error as it doesn't make sense.
`--mode` probably doesn't need a shorthand flag at all, so remove it.

Noticed in https://github.com/NixOS/nix/pull/9809#issuecomment-1899890555
2024-01-19 10:10:00 +01:00
John Ericson
a34ec0bd12 Include store path exact spec in the docs
This is niche, but deserves to be in the manual because it is describing
behavior visible to the outside world, not mere implementation details.
2024-01-18 22:19:14 -05:00
Robert Hensing
8d422c2fef Revert libgit2 fetching
libgit2 is not capable of using git-credentials helpers yet.
This prevents private repositories from being used.

Based on code that was replaced in https://github.com/NixOS/nix/pull/9240
(Introduce libgit2); hence:

Co-authored-by: Eelco Dolstra <edolstra@gmail.com>
2024-01-18 22:29:26 +01:00
Robert Hensing
76a50b3a69 doc: GitRepoImpl::path 2024-01-18 22:29:26 +01:00
Eelco Dolstra
dca0a80240 copyStorePath(): Bail out early if the store path already exists
In rare cases (e.g. when using allowSubstitutes = false), it's
possible that we simultaneously have a DerivationGoal *and* a
SubstitutionGoal building the same path. So if a DerivationGoal
already built the path while the SubstitutionGoal was waiting for a
download slot, it saves us a superfluous download to exit early.
2024-01-18 17:19:15 +01:00
Eelco Dolstra
a18d8d688a LocalStore::addToStore(): Ignore exceptions from parseDump()
In the "discard" case (i.e. when the store path already exists
locally), when we call parseDump() from a Finally and it throws an
exception (e.g. if the download of the NAR fails), Nix crashes:

   terminate called after throwing an instance of 'nix::SubstituteGone'
     what():  error: file 'nar/06br3254rx4gz4cvjzxlv028jrx80zg5i4jr62vjmn416dqihgr7.nar.xz' does not exist in binary cache 'http://localhost'
   Aborted (core dumped)
2024-01-18 17:19:15 +01:00
Eelco Dolstra
ab786e22f1 Show what goal is waiting for a build slot 2024-01-18 17:19:15 +01:00
Théophane Hufschmitt
e652322a61
Merge pull request #9799 from obsidiansystems/push-add-to-store-from-dump-unsupported-down
Push `addToStoreFromDump` `unsupported(...)` down `Store` class hierarchy
2024-01-18 16:54:44 +01:00
Eelco Dolstra
32706b14a7
Merge pull request #9798 from edolstra/remote-store-eof
Print a more helpful message if the daemon crashes
2024-01-18 15:47:59 +01:00
Eelco Dolstra
1fe8f54bd3 Use BackedStringView 2024-01-18 15:27:57 +01:00
Théophane Hufschmitt
28674247ec
Merge pull request #9787 from obsidiansystems/bind-proc-syserror
`bind`: give same treatment as `connect` in #8544, dedup
2024-01-18 09:34:15 +01:00
John Ericson
574db83504 Push addToStoreFromDump unsupported(...) down Store class hierarchy
Instead of having it be the default method in `Store` itself, have it be
the implementation in `DummyStore` and `LegacySSHStore`. Then just the
implementations which fail to provide the method pay the "penalty" of
dealing with the icky `unimplemented` function for non-compliance.

Picks up where #8217. Getting close to no `unsupported` in the `Store`
interface itself!

More progress on issue #5729.
2024-01-17 23:46:03 -05:00
John Ericson
3016e67c21 bind: give same treatment as connect in #8544, dedup
It is good to propagate the underlying error so whether or not we use a
process to deal with path length issues is not observable.

Also, as these wrapper functions got more and more complex, the code
duplication got worse and worse. The new `bindConnectProcHelper`
function deduplicates them.
2024-01-17 23:35:08 -05:00
Eelco Dolstra
a3cf27ca47 Print a more helpful message if the daemon crashes
Instead of

   error: unexpected end-of-file

you now get

   error: Nix daemon disconnected unexpectedly (maybe it crashed?)
2024-01-17 22:54:02 +01:00
Eelco Dolstra
39ab50f9ee Store::buildPaths(): Fix display of store paths
This was broken in 7ac39ff05c.
2024-01-17 21:41:37 +01:00
Robert Hensing
d0a284284b refactor: Extract simply, awkwardly Store::queryPathInfoFromClientCache
This is useful for determining quickly which substituters to query.

An alternative would be for users to invoke the narinfo cache db directly,
so why do we need this change?

 - It is easier to use. I believe Nix itself should also use it.

 - This way, the narinfo cache db remains an implementation detail.

 - Callers get to use the in-memory cache as well.
2024-01-17 17:54:19 +01:00
Robert Hensing
2a3c5e6b8b
Merge pull request #9480 from NixOS/libfetchers-git-exportIgnore
libfetchers/git: Support export-ignore
2024-01-16 23:03:46 +01:00
Robert Hensing
01271f2996
Merge pull request #9786 from hercules-ci/package
DerivationInfo -> PackageInfo
2024-01-16 22:43:14 +01:00
Jacek Galowicz
8ae3aeec94 Don't use std::make_unique right before release 2024-01-16 17:00:46 +00:00
Jacek Galowicz
9d9f42cc38 Remove C-style casts 2024-01-16 17:00:46 +00:00
Jacek Galowicz
d11d7849f7 Use ChildWrapperFunction type and make casts more explicit 2024-01-16 17:00:46 +00:00
Jacek Galowicz
c924147c9d Drop parentheses from thunks 2024-01-16 17:00:46 +00:00
Jacek Galowicz
1885d579db Improve String Handling 2024-01-16 17:00:46 +00:00
Jacek Galowicz
0bc66e529f Use npos member variables instead of full type 2024-01-16 15:17:57 +00:00
Robert Hensing
ea6aa5ffd8 Package{,Info}: comments 2024-01-16 15:44:02 +01:00
Robert Hensing
65255edc9b DerivationInfo -> PackageInfo
This does not yet resolve the coupling between packages and
derivations, but it makes the code more consistent with the
terminology, and it accentuates places where the coupling is
obvious, such as

         auto drvPath = packageInfo.queryDrvPath();
         if (!drvPath)
             throw Error("'%s' is not a derivation", what());

... which isn't wrong, and in my opinion, doesn't even look
wrong, because it just reflects the current logic.
However, I do like that we can now start to see in the code that
this coupling is perhaps a bit arbitrary.
After this rename, we can bring the DerivingPath concept into type
and start to lift this limitation.
2024-01-16 15:28:03 +01:00
Eelco Dolstra
d005bade7f connect(): Propagate errno from the child process
This is necessary on macOS since addTempRoot() relies on errno.
2024-01-16 15:26:17 +01:00
Eelco Dolstra
0b1d93d2ba Sleep a bit between attempts to connect to the root server 2024-01-16 15:26:17 +01:00
Eelco Dolstra
302625e83b Merge remote-tracking branch 'origin/master' into handle-missing-gc-socket 2024-01-16 13:18:58 +01:00
Robert Hensing
b2deff1947
Merge pull request #9747 from awakesecurity/mz/fix-quadratic-splitString
Fix performance of builtins.substring for empty substrings
2024-01-16 12:18:59 +01:00
pennae
09a1128d9e don't repeatedly look up ast internal symbols
these symbols are used a *lot*, so it makes sense to cache them. this
mostly increases clarity of the code (however clear one may wish to call
the parser desugaring here), but it also provides a small performance
benefit.
2024-01-15 16:52:18 +01:00
pennae
b596cc9e79 decouple parser and EvalState
there's no reason the parser itself should be doing semantic analysis
like bindVars. split this bit apart (retaining the previous name in
EvalState) and have the parser really do *only* parsing, decoupled from
EvalState.
2024-01-15 16:52:18 +01:00
pennae
e1aa585964 slim down parser.y
most EvalState and Expr members defined here could be elsewhere, where
they'd be easier to maintain (not being embedded in a file with arcane
syntax) and *somewhat* more faithfully placed according to the path of
the file they're defined in.
2024-01-15 16:52:18 +01:00
pennae
835a6c7bcf rename ParserState::{makeCurPos -> at}
most instances of this being used do not refer to the "current"
position, sometimes not even to one reasonably close by. it could also
be called `makePos` instead, but `at` seems clear in context.
2024-01-15 16:52:18 +01:00
pennae
0076056164 move ParseData to own header, rename to ParserState
ParserState better describes what this struct really is. the parser
really does modify its state (most notably position and symbol tables),
so calling it that rather than obliquely "data" (which implies being
input only) makes sense.
2024-01-15 16:52:18 +01:00
pennae
1b09b80afa make parser utility functions members of ParseData
all of them need access to parser state in some way. make them members
to allow this without fussing so much.
2024-01-15 16:52:18 +01:00
pennae
e8d9de967f simplify parse error reporting
since nix doesn't use the bison `error` terminal anywhere any invocation
of yyerror will immediately cause a failure. since we're *already*
leaking tons of memory whatever little bit bison allocates internally
doesn't much matter any more, and we'll be replacing the parser soon anyway.

coincidentally this now also matches the error behavior of URIs when
they are disabled or ~/ paths in pure eval mode, duplicate attr
detection etc.
2024-01-15 16:52:18 +01:00
pennae
f07388bf98 remove ParserFormals
this is a proper subset of Formals anyway, so let's just use those and
avoid the extra allocations and moves.
2024-01-15 16:52:18 +01:00
John Ericson
beed00c04e absPath: just take a std::string_view
1. Slightly more efficient

2. Easier to call

Co-authored-by: Cole Helbling <cole.e.helbling@outlook.com>
2024-01-15 08:21:54 -05:00
Robert Hensing
268c49264a
Merge pull request #9763 from L-as/avoid-unnecessary-copy
Avoid unnecessary copy of goal log
2024-01-15 08:32:03 +01:00
Las Safin
f61d951909
Avoid unnecessary copy of goal log
The data was (accidentally?) copied into a std::string,
even though the string is immediately converted into a std::string_view.
The code has been changed to construct a std::string_view directly,
such that one copy less happens.
2024-01-13 19:32:37 +00:00
John Ericson
e739a5002d Avoid Windows macros in the parser and lexer
`FLOAT`, `INT`, and `IN` are identifers taken by macros.

The name `IN_KW` is chosen to match `OR_KW`, which is presumably named
that way for the same reason of dodging macros.
2024-01-12 19:51:36 -05:00
Robert Hensing
15f7bdaf27 CanonPath: Add rel_c_str()
Defensively because isRoot() is also defensive.
2024-01-12 22:55:37 +01:00
John Ericson
c58da62a06
Merge pull request #9737 from obsidiansystems/sys-error-split
Separate `SystemError` from `SysError`
2024-01-12 12:41:36 -05:00
John Ericson
6208ca7209 Separate SystemError from SysError
Most of this is a `catch SysError` -> `catch SystemError` sed. This
is a rather pure-churn change I would like to get out of the way. **The
intersting part is `src/libutil/error.hh`.**

On Unix, we will only throw the `SysError` concrete class, which has
the same constructors that `SystemError` used to have.

On Windows, we will throw `WinError` *and* `SysError`. `WinError`
(which will be created in a later PR), will use a `DWORD` instead of
`int` error value, and `GetLastError()`, which is the Windows equivalent
of the `errno` machinery. Windows will *also* use `SysError` because
Window's "libc" (MSVCRT) implements the POSIX interface, and we use it
too.

As the docs describe, while we *throw* one of the 3 choices above (2
concrete classes or the alias), we should always *catch* `SystemError`.
This ensures no matter how the implementation changes for Windows (e.g.
between `SysError` and `WinError`) the catching logic stays the same
and stays correct.

Co-Authored-By volth <volth@volth.com>
Co-Authored-By Eugene Butler <eugene@eugene4.com>
2024-01-12 12:00:33 -05:00
Mel Zuser
25c889baac Fix performance of builtins.substring for empty substrings
When returning a 0-length substring, avoid calling coerceToString,
since it returns a string_view with the string's length, which is
expensive to compute for large strings.
2024-01-12 08:37:04 -08:00
Robert Hensing
274d887fee fetchTree/git: Cache export-ignore filter 2024-01-12 17:18:56 +01:00
Robert Hensing
d80c582b78 libfetchers: Add CachingFilteringInputAccessor
Co-authored-by: Eelco Dolstra <edolstra@gmail.com>
2024-01-12 17:16:59 +01:00
Eelco Dolstra
52f949bbf5
Merge pull request #9656 from edolstra/nix-profile-stable-names
Make profile element names stable
2024-01-12 16:59:36 +01:00
Robert Hensing
f68ad5acbb fetchTree/git: Don't expose exportIgnore attr 2024-01-12 16:05:36 +01:00
Robert Hensing
469cf263c7 Format 2024-01-12 15:31:53 +01:00
Robert Hensing
692e9197bc fetchTree: Disallow combination of submodules and exportIgnore for now 2024-01-12 15:31:53 +01:00
Robert Hensing
99bd12f0b1 fetchGit/fetchTree: Improve exportIgnore, submodule interaction
Also fingerprint and some preparatory improvements.

Testing is still not up to scratch because lots of logic is duplicated
between the workdir and commit cases.
2024-01-12 15:31:53 +01:00
Robert Hensing
1bbe837184 fetchTree: Add isFetchGit exportIgnore 2024-01-12 15:31:53 +01:00
Robert Hensing
7774eff10e libfetchers/git: Move workdir accessor into GitRepo::getAccessor 2024-01-12 15:31:53 +01:00
Robert Hensing
8024b954d7 fetchTree: Recommend against exportIgnore 2024-01-12 15:31:53 +01:00
Robert Hensing
467c62a96e GitRepoImpl: Move exportIgnore into a filtering accessor 2024-01-12 15:31:53 +01:00
Robert Hensing
cd5e752fa7 GitRepoImpl::getSubmodules: Access getSubmoduleRev without cast
This will be needed because the accessor will be wrapped, and therefore
not be an instance of GitInputAccessor anymore.
2024-01-12 15:31:53 +01:00
Robert Hensing
f6b1d15580 MakeNotAllowedError: Touch up doc 2024-01-12 15:31:53 +01:00
Robert Hensing
1c6bb609af fetchTree: allow larger output attrsets
Intentionally dumb change ahead of architectural improvements.
2024-01-12 15:31:53 +01:00
Robert Hensing
ce6d58a97c git fetcher: Add exportIgnore parameter
Enabled for fetchGit, which historically had this behavior,
among other behaviors we do not want in fetchGit.

fetchTree disables this parameter by default. It can choose the
simpler behavior, as it is still experimental.

I am not confident that the filtering implementation is future
proof. It should reuse a source filtering wrapper, which I believe
Eelco has already written, but not merged yet.
2024-01-12 15:31:52 +01:00
Eelco Dolstra
0d55d660d5
Merge pull request #8043 from bobvanderlinden/pr-shell-env
nix: develop: use SHELL from rc script
2024-01-12 13:42:42 +01:00
Eelco Dolstra
e21b3cf9db Merge remote-tracking branch 'origin/master' into nix-profile-stable-names 2024-01-12 13:36:27 +01:00
Eelco Dolstra
7c6f093abc .data() -> .c_str() to be on the safe side 2024-01-12 13:00:53 +01:00
Eelco Dolstra
66bd1b0298 Merge remote-tracking branch 'origin/master' into pr-shell-env 2024-01-12 12:56:26 +01:00
Eelco Dolstra
3e23759834 gc-non-blocking.sh: Add explanation
Also name the _NIX_TEST_GC_SYNC environment variables logically.
2024-01-12 12:38:55 +01:00
Eelco Dolstra
5703c31325 Merge remote-tracking branch 'origin/master' into handle-missing-gc-socket 2024-01-12 12:26:25 +01:00
Rebecca Turner
df84dd4d8d
Restore ambiguous value printer for nix-instantiate
The Nix team has requested that this output format remain unchanged.
I've added a warning to the man page explaining that `nix-instantiate
--eval` output will not parse correctly in many situations.
2024-01-11 16:34:36 -08:00
Rebecca Turner
0fa08b4516
Unify and refactor value printing
Previously, there were two mostly-identical value printers -- one in
`libexpr/eval.cc` (which didn't force values) and one in
`libcmd/repl.cc` (which did force values and also printed ANSI color
codes).

This PR unifies both of these printers into `print.cc` and provides a
`PrintOptions` struct for controlling the output, which allows for
toggling whether values are forced, whether repeated values are tracked,
and whether ANSI color codes are displayed.

Additionally, `PrintOptions` allows tuning the maximum number of
attributes, list items, and bytes in a string that will be displayed;
this makes it ideal for contexts where printing too much output (e.g.
all of Nixpkgs) is distracting. (As requested by @roberth in
https://github.com/NixOS/nix/pull/9554#issuecomment-1845095735)

Please read the tests for example output.

Future work:
- It would be nice to provide this function as a builtin, perhaps
  `builtins.toStringDebug` -- a printing function that never fails would
  be useful when debugging Nix code.
- It would be nice to support customizing `PrintOptions` members on the
  command line, e.g. `--option to-string-max-attrs 1000`.
2024-01-11 16:34:36 -08:00
Rebecca Turner
c9125603a5
Unindent print.hh declarations 2024-01-11 16:07:01 -08:00
John Ericson
84502674f8
Merge pull request #9736 from obsidiansystems/mingw-makefiles
Some small Makefile improvements to prepare for Windows support
2024-01-11 10:58:55 -05:00
John Ericson
113499d16f
Merge pull request #9634 from 9999years/combine-abstract-pos-and-pos
Combine `AbstractPos`, `PosAdapter`, and `Pos`
2024-01-11 10:47:27 -05:00
John Ericson
423484ad26 Only link with -pthread on Unix
We don't want this with MinGW.
2024-01-10 20:38:39 -05:00
John Ericson
f9e5eb5f0a Make indentation in makesfiles consistent
Tab (as required) for rules, two spaces for `if`...`endif`.
2024-01-10 20:26:34 -05:00
John Ericson
2cea88dbc8 Improve build sytem support for readline instead of editline
Changes:

- CPP variable is now `USE_READLINE` not `READLINE`

- `configure.ac` supports with new CLI flag

- `package.nix` supports with new configuration option

- `flake.nix` CIs this (along with no markdown)

Remove old Ubuntu 16.04 stop-gap too, as that is now quite old.

Motivation:

- editline does not build for Windows, but readline *should*. (I am
  still working on this in Nixpkgs at this time, however. So there will
  be a follow-up Nix PR removing the windows-only skipping of the
  readline library once I am done.)

- Per
  https://salsa.debian.org/debian/nix/-/blob/master/debian/rules?ref_type=heads#L27
  and #2551, Debian builds Nix with readline. Now we better support and
  CI that build configuration.

This is picking up where #2551 left off, ensuring we test a few more
things not merely have CPP for them.

Co-authored-by: Weijia Wang <9713184+wegank@users.noreply.github.com>
2024-01-09 16:56:55 -05:00
Eelco Dolstra
b91c935c2f
Merge pull request #9648 from cole-h/nix-shell-ordering
nix shell: reflect command line order in PATH order
2024-01-09 19:00:33 +01:00
John Ericson
fa2a27d720
Merge pull request #9710 from wegank/disable-lowdown
Make lowdown optional
2024-01-08 15:13:45 -05:00
Weijia Wang
bbd0a959e1 Make lowdown optional
Co-authored-by: John Ericson <John.Ericson@Obsidian.Systems>
2024-01-08 20:37:42 +01:00
Rebecca Turner
4feb7d9f71
Combine AbstractPos, PosAdapter, and Pos
Also move `SourcePath` into `libutil`.

These changes allow `error.hh` and `error.cc` to access source path and
position information, which we can use to produce better error messages
(for example, we could consider omitting filenames when two or more
consecutive stack frames originate from the same file).
2024-01-08 10:59:41 -08:00
John Ericson
ff6de4a9ee
Merge pull request #9662 from shlevy/flat-fixed-references-assert
Improve error message for fixed-outputs with references.
2024-01-08 10:46:37 -05:00
Eelco Dolstra
faf87b51f7
Show why GC socket connection was refused
Co-authored-by: John Ericson <git@JohnEricson.me>
2024-01-08 14:14:36 +01:00
Shea Levy
eeb2f083c5
Improve error message for fixed-outputs with references.
This codepath is possible, e.g. with a dockerTools.pullImage of an image with a Nix store.
2024-01-07 07:32:31 -05:00
Eelco Dolstra
359990dfdc
Merge pull request #9324 from 9999years/fix-8854-take-2
Don't attempt to `git add` ignored files
2024-01-05 14:57:32 +01:00
Eelco Dolstra
dedbbbb451
Merge pull request #9670 from DavHau/log-lines
saner default for log-lines: change to 25
2024-01-05 14:39:50 +01:00
Eelco Dolstra
965cfe9688
Merge pull request #9687 from edolstra/withFramedSink-ctrl-c-hang
withFramedSink(): Receive interrupts on the stderr thread
2024-01-04 17:05:18 +01:00
John Ericson
12bb8cdd38 Signer infrastructure: Prep for #9076
This sets up infrastructure in libutil to allow for signing other than
by a secret key in memory. #9076 uses this to implement remote signing.

(Split from that PR to allow reviewing in smaller chunks.)

Co-Authored-By: Raito Bezarius <masterancpp@gmail.com>
2024-01-03 16:13:55 -05:00
Eelco Dolstra
295a2ff8bd Make some more threads receive interrupts
Shouldn't hurt to do this. In particular, this should speed up
shutting down the PathSubstitutionGoal thread if it's copying from a
remote store.
2024-01-03 19:30:02 +01:00
Eelco Dolstra
24e70489e5 withFramedSink(): Receive interrupts on the stderr thread
Otherwise Nix deadlocks when Ctrl-C is received in withFramedSink():
the parent thread will wait forever for the stderr thread to shut
down.

Fixes the hang reported in https://github.com/NixOS/nix/issues/7245#issuecomment-1770560923.
2024-01-03 19:14:50 +01:00
Eelco Dolstra
315aade89d
Merge pull request #9681 from edolstra/eval-optimisations
Optimize empty list constants
2024-01-03 10:43:01 +01:00
Eelco Dolstra
484881f302 Move empty list constant 2024-01-03 10:23:27 +01:00
John Ericson
2b20f36f95 Fix NetBSD build
There was still a mistake after my earlier
a7115a47ef and
e13fc0bbdb. This finally gets it right.
2024-01-02 12:33:51 -05:00
Eelco Dolstra
3f796514b3 Optimize empty list constants
This avoids a Value allocation for empty list constants. During a `nix
search nixpkgs`, about 82% of all thunked lists are empty, so this
removes about 3 million Value allocations.

Performance comparison on `nix search github:NixOS/nixpkgs/e1fa12d4f6c6fe19ccb59cac54b5b3f25e160870 --no-eval-cache`:

maximum RSS:        median = 3845432.0000  mean = 3845432.0000  stddev =      0.0000  min = 3845432.0000  max = 3845432.0000  [rejected?, p=0.00000, Δ=-70084.00000±0.00000]
soft page faults:   median = 965395.0000  mean = 965394.6667  stddev =      1.1181  min = 965392.0000  max = 965396.0000  [rejected?, p=0.00000, Δ=-17929.77778±38.59610]
system CPU time:    median =      1.8029  mean =      1.7702  stddev =      0.0621  min =      1.6749  max =      1.8417  [rejected, p=0.00064, Δ=-0.12873±0.09905]
user CPU time:      median =     14.1022  mean =     14.0633  stddev =      0.1869  min =     13.8118  max =     14.3190  [not rejected, p=0.03006, Δ=-0.18248±0.24928]
elapsed time:       median =     15.8205  mean =     15.8618  stddev =      0.2312  min =     15.5033  max =     16.1670  [not rejected, p=0.00558, Δ=-0.28963±0.29434]
2024-01-02 12:49:11 +01:00
Eelco Dolstra
3f834f5c64
Merge pull request #9657 from edolstra/fix-getNameFromURL
getNameFromURL(): Support uppercase characters in attribute names
2024-01-02 12:48:17 +01:00
Robert Hensing
83f5622545
Merge pull request #9658 from pennae/env-diet
reduce the size of Env by one pointer
2023-12-31 13:57:16 +01:00
Robert Hensing
3511430902
Merge pull request #9673 from pennae/drv-parse-opts
optimize derivation parsing
2023-12-31 13:49:03 +01:00
pennae
1fe66852ff reduce the size of Env by one pointer
since `up` and `values` are both pointer-aligned the type field will
also be pointer-aligned, wasting 48 bits of space on most machines. we
can get away with removing the type field altogether by encoding some
information into the `with` expr that created the env to begin with,
reducing the GC load for the absolutely massive amount of single-entry
envs we create for lambdas. this reduces memory usage of system eval by
quite a bit (reducing heap size of our system eval from 8.4GB to 8.23GB)
and gives similar savings in eval time.

running `nix eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'`

before:

  Time (mean ± σ):      5.576 s ±  0.003 s    [User: 5.197 s, System: 0.378 s]
  Range (min … max):    5.572 s …  5.581 s    10 runs

after:

  Time (mean ± σ):      5.408 s ±  0.002 s    [User: 5.019 s, System: 0.388 s]
  Range (min … max):    5.405 s …  5.411 s    10 runs
2023-12-30 18:55:13 +01:00
pennae
c62686a95b reduce copies during drv parsing
many paths need not be heap-allocated, and derivation env name/valye
pairs can be moved into the map.

before:

Benchmark 1: nix eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'
  Time (mean ± σ):      6.883 s ±  0.016 s    [User: 5.250 s, System: 1.424 s]
  Range (min … max):    6.860 s …  6.905 s    10 runs

after:

Benchmark 1: nix eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'
  Time (mean ± σ):      6.868 s ±  0.027 s    [User: 5.194 s, System: 1.466 s]
  Range (min … max):    6.828 s …  6.913 s    10 runs
2023-12-30 18:44:15 +01:00
pennae
02c64abf1e use translation table for drv string parsing
the table is very small compared to cache sizes and a single indexed
load is faster than three comparisons.

before:

Benchmark 1: nix eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'
  Time (mean ± σ):      6.907 s ±  0.012 s    [User: 5.272 s, System: 1.429 s]
  Range (min … max):    6.893 s …  6.926 s    10 runs

after:

Benchmark 1: nix eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'
  Time (mean ± σ):      6.883 s ±  0.016 s    [User: 5.250 s, System: 1.424 s]
  Range (min … max):    6.860 s …  6.905 s    10 runs
2023-12-30 18:44:15 +01:00
pennae
79d3d412ca optimize derivation string parsing
a bunch of derivation strings contain no escape sequences. we can
optimize for this fact by first scanning for the end of a derivation
string and simply returning the contents unmodified if no escape
sequences were found. to make this even more efficient we can also use
BackedStringViews to avoid copies, avoiding heap allocations for
transient data.

before:

Benchmark 1: nix eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'
  Time (mean ± σ):      6.952 s ±  0.015 s    [User: 5.294 s, System: 1.452 s]
  Range (min … max):    6.926 s …  6.974 s    10 runs

after:

Benchmark 1: nix eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'
  Time (mean ± σ):      6.907 s ±  0.012 s    [User: 5.272 s, System: 1.429 s]
  Range (min … max):    6.893 s …  6.926 s    10 runs
2023-12-30 18:44:10 +01:00
Rebecca Turner
7434caca05
Fix segfault on infinite recursion in some cases
This fixes a segfault on infinite function call recursion (rather than
infinite thunk recursion) by tracking the function call depth in
`EvalState`.

Additionally, to avoid printing extremely long stack traces, stack
frames are now deduplicated, with a `(19997 duplicate traces omitted)`
message. This should only really be triggered in infinite recursion
scenarios.

Before:

    $ nix-instantiate --eval --expr '(x: x x) (x: x x)'
    Segmentation fault: 11

After:

    $ nix-instantiate --eval --expr '(x: x x) (x: x x)'
    error: stack overflow

           at «string»:1:14:
                1| (x: x x) (x: x x)
                 |              ^

    $ nix-instantiate --eval --expr '(x: x x) (x: x x)' --show-trace
    error:
           … from call site
             at «string»:1:1:
                1| (x: x x) (x: x x)
                 | ^

           … while calling anonymous lambda
             at «string»:1:2:
                1| (x: x x) (x: x x)
                 |  ^

           … from call site
             at «string»:1:5:
                1| (x: x x) (x: x x)
                 |     ^

           … while calling anonymous lambda
             at «string»:1:11:
                1| (x: x x) (x: x x)
                 |           ^

           … from call site
             at «string»:1:14:
                1| (x: x x) (x: x x)
                 |              ^

           (19997 duplicate traces omitted)

           error: stack overflow
           at «string»:1:14:
                1| (x: x x) (x: x x)
                 |              ^
2023-12-29 22:16:44 -08:00
pennae
2cfc4ace35 malloc/memset even less
more buffers that can be uninitialized and on the stack. small
difference, but still worth doing.

before:

Benchmark 1: nix eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'
  Time (mean ± σ):      6.963 s ±  0.011 s    [User: 5.330 s, System: 1.421 s]
  Range (min … max):    6.943 s …  6.974 s    10 runs

after:

Benchmark 1: nix eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'
  Time (mean ± σ):      6.952 s ±  0.015 s    [User: 5.294 s, System: 1.452 s]
  Range (min … max):    6.926 s …  6.974 s    10 runs
2023-12-30 00:45:11 +01:00
pennae
99a691c8a1 don't use istreams in hot paths
istream sentry objects are very expensive for single-character
operations, and since we don't configure exception masks for the
istreams used here they don't even do anything. all we need is
end-of-string checks and an advancing position in an immutable memory
buffer, both of which can be had for much cheaper than istreams allow.

the effect of this change is most apparent on empty stores.

before:

Benchmark 1: nix eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'
  Time (mean ± σ):      7.167 s ±  0.013 s    [User: 5.528 s, System: 1.431 s]
  Range (min … max):    7.147 s …  7.182 s    10 runs

after:

Benchmark 1: nix eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'
  Time (mean ± σ):      6.963 s ±  0.011 s    [User: 5.330 s, System: 1.421 s]
  Range (min … max):    6.943 s …  6.974 s    10 runs
2023-12-30 00:45:10 +01:00
DavHau
b6313f64f7 saner default for log-lines: change to 25
This seems to be a much saner default. 10 lines are just not enough in so many cases.
2023-12-27 19:57:27 +07:00
Brian Le
e2399fc949 Change "dervation" typos to "derivation" 2023-12-26 17:12:28 -05:00
Shea Levy
c3942ef85f
Build IFD in the build store when using eval-store.
Previously, IFDs would be built within the eval store, even though one
is typically using `--eval-store` precisely to *avoid* local builds.

Because the resulting Nix expression must be copied back to the eval
store in order to be imported, this requires the eval store to trust
the build store's signatures.
2023-12-23 21:33:56 -05:00
Robert Hensing
ee439734e9
Merge pull request #9582 from pennae/misc-opts
a packet of small optimizations
2023-12-22 17:00:59 +01:00
Eelco Dolstra
cf02b3335c Merge remote-tracking branch 'origin/master' into tarball-cache 2023-12-22 16:45:01 +01:00
Eelco Dolstra
936a364226 getNameFromURL(): Support uppercase characters in attribute names
In particular, this makes it handle 'legacyPackages' correctly.
2023-12-22 16:35:58 +01:00
Eelco Dolstra
a748e88bf4 nix profile: Remove check for "name" attribute in manifests
AFAIK, we've never emitted this attribute.
2023-12-22 16:27:31 +01:00
John Ericson
d65d56fa77
Merge pull request #9655 from iFreilicht/move-flake-url-name-util
Move url-name utility to libexpr/flake
2023-12-22 10:26:42 -05:00
Eelco Dolstra
6268a45b65 nix profile: Make profile element names stable
The profile manifest is now an object keyed on the name returned by
getNameFromURL() at installation time, instead of an array. This
ensures that the names of profile elements don't change when other
elements are added/removed.
2023-12-22 16:21:30 +01:00
Eelco Dolstra
3187bc9ac3 nix profile: Remove indices 2023-12-22 16:21:30 +01:00
Robert Hensing
d2016c6b59
Merge pull request #9621 from blaggacao/fix/too-restrictive-branch-regex-master
fix: valid branch name
2023-12-22 16:02:25 +01:00
Felix Uhl
26d7b0c793 Move url-name utility to libexpr/flake 2023-12-22 09:33:02 +01:00
Robert Hensing
4f47152209
libutil/url-parts.hh: Fix regex
Regex syntax is awful.
2023-12-21 23:11:25 +01:00
Felix Uhl
397cf4e285 nix search: Disallow empty regex
Fixes #4739
Fixes #3553 in spirit IMO
2023-12-21 22:13:43 +01:00
Robert Hensing
8c4ea12f11
libutil/url-parts.hh: comment 2023-12-21 21:03:06 +01:00
Cole Helbling
f4454aac9f nix shell: reflect command line order in PATH order
Prior to this change, Nix would prepend every installable to the PATH
list in order to ensure that installables appeared before the current
PATH from the ambient environment.

With this change, all the installables are still prepended to the PATH,
but in the same order as they appear on the command line. This means
that the first of two packages that expose an executable `hello` would
appear in the PATH first, and thus be executed first.

See the test in the prior commit for a more concrete example.
2023-12-21 10:56:19 -08:00
Cole Helbling
5ed1884875 libcmd: Installable::toStorePaths -> Installable::toStorePathSet 2023-12-21 10:23:07 -08:00
Eelco Dolstra
14508ade28 Typo 2023-12-21 16:25:55 +01:00
Eelco Dolstra
d77a39a314 Fix indent 2023-12-21 16:22:34 +01:00
Eelco Dolstra
9d9d9ff0de Merge remote-tracking branch 'origin/master' into profile-names-instead-of-index 2023-12-21 16:21:26 +01:00
Silvan Mosberger
ea454d8687 Undeprecate isNull
There's no good reason to deprecate it:
- For consistency reasons it should continue to exist, such that all
primitive types have a corresponding `builtins.is*` primop.
- There's no implementation cost to continuing to have this function
- It costs users time to try to migrate away from it, e.g.
  https://github.com/NixOS/nixpkgs/pull/219747 and https://github.com/NixOS/nixpkgs/pull/275548
- Using it can give easier-to-read code like `all isNull list`

Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
2023-12-20 17:55:19 +01:00
pennae
2b0e95e7aa use singleton expr to generate black hole errors
this also reduces forceValue code size and removes the need for
hideInDiagnostics. coopting thunk forcing like this has the additional
benefit of clarifying how these errors can happen in the first place.
2023-12-19 19:32:16 +01:00
pennae
f9db4de0f3 force-inline forceValue
forceValue is extremely hot. interestingly adding likeliness annotations
to the branches does not seem to make a difference.

before:

  Time (mean ± σ):      4.224 s ±  0.005 s    [User: 3.711 s, System: 0.512 s]
  Range (min … max):    4.218 s …  4.234 s    10 runs

after:

  Time (mean ± σ):      4.140 s ±  0.009 s    [User: 3.647 s, System: 0.492 s]
  Range (min … max):    4.130 s …  4.152 s    10 runs
2023-12-19 19:32:16 +01:00
pennae
69ed4aee61 remove lazy-pos forceValue
almost all uses of this are interactive, except for deepSeq. deepSeq is
going to be expensive and rare enough to not care much about, and
Value::determinePos should usually be cheap enough to not be too much of
a burden in any case.
2023-12-19 19:32:16 +01:00
pennae
f9aee2f2c4 don't malloc/memset posix accessor buffer
it's relatively small and fits on the stack nicely, and we don't need it
initialized either.
2023-12-19 19:32:16 +01:00
pennae
b78e77b34c use custom location type in the parser
~1% parser speedup from not using TLS indirections, less on system eval.
this could have also gone in flex yyextra data, but that's significantly
slower for some reason (albeit still faster than thread locals).

before:

  Time (mean ± σ):      4.231 s ±  0.004 s    [User: 3.725 s, System: 0.504 s]
  Range (min … max):    4.226 s …  4.240 s    10 runs

after:

  Time (mean ± σ):      4.224 s ±  0.005 s    [User: 3.711 s, System: 0.512 s]
  Range (min … max):    4.218 s …  4.234 s    10 runs
2023-12-19 19:32:16 +01:00
pennae
2e0321912a use aligned flex tables
~2% speedup on parsing without eval, less (but still significant) on
system eval. having flex generate faster parsers leads to very strange
misparses. maybe re2c is worth investigating.

before:

  Time (mean ± σ):      4.260 s ±  0.003 s    [User: 3.754 s, System: 0.505 s]
  Range (min … max):    4.257 s …  4.266 s    10 runs

after:

  Time (mean ± σ):      4.231 s ±  0.004 s    [User: 3.725 s, System: 0.504 s]
  Range (min … max):    4.226 s …  4.240 s    10 runs
2023-12-19 19:32:16 +01:00
pennae
cc4038d541 use std::tie() for macro-generated operators
as written the comparisons generate copies, even though it looks as
though they shouldn't.

before:

  Time (mean ± σ):      4.396 s ±  0.002 s    [User: 3.894 s, System: 0.501 s]
  Range (min … max):    4.393 s …  4.399 s    10 runs

after:

  Time (mean ± σ):      4.260 s ±  0.003 s    [User: 3.754 s, System: 0.505 s]
  Range (min … max):    4.257 s …  4.266 s    10 runs
2023-12-19 19:32:16 +01:00
pennae
74c134914c compare string values with strcmp
string_view()ification calls strlen() first, which we don't need here.
2023-12-19 19:32:16 +01:00
pennae
78353deb02 encode black holes as tApp values
checking for isBlackhole in the forceValue hot path is rather more
expensive than necessary, and with a little bit of trickery we can move
such handling into the isApp case. small performance benefit, but under
some circumstances we've seen 2% improvement as well.

〉 nix eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'

before:

  Time (mean ± σ):      4.429 s ±  0.002 s    [User: 3.929 s, System: 0.500 s]
  Range (min … max):    4.427 s …  4.433 s    10 runs

after:

  Time (mean ± σ):      4.396 s ±  0.002 s    [User: 3.894 s, System: 0.501 s]
  Range (min … max):    4.393 s …  4.399 s    10 runs
2023-12-19 19:32:16 +01:00
pennae
0218e4e6c3 memset less in addToStoreFromDump
resizing a std::string clears the newly added bytes, which is not
necessary here and comes with a ~1.4% slowdown on our test nixos config.

〉 nix eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'

before:

  Time (mean ± σ):      4.486 s ±  0.003 s    [User: 3.978 s, System: 0.507 s]
  Range (min … max):    4.482 s …  4.492 s    10 runs

after:

  Time (mean ± σ):      4.429 s ±  0.002 s    [User: 3.929 s, System: 0.500 s]
  Range (min … max):    4.427 s …  4.433 s    10 runs
2023-12-19 19:32:16 +01:00
Eelco Dolstra
7cfd6c0efe
Merge pull request #9325 from NixOS/accessor-add-to-store
Content addressing and adding to store cleanup
2023-12-19 15:10:31 +01:00
Andrew Marshall
7526b7ded6 Allow access to /dev/stderr in Darwin sandbox
We allow /dev/stdout, so why not this? Since it is process-local,
anyway, should not be possible to escape sandbox using it.
2023-12-18 19:33:20 -05:00
John Ericson
ed26b186fb Remove now-redundant text-hashing store methods
`addTextToStore` and `computeStorePathFromDump` are now redundant.

Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
2023-12-18 10:44:10 -05:00
John Ericson
dfc876531f Organize content addressing, use SourceAccessor with Store::addToStore
Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
2023-12-18 10:41:54 -05:00
Théophane Hufschmitt
ebfbc5a6a5
Merge pull request #9628 from fricklerhandwerk/add-links
add cross-reference
2023-12-18 13:07:39 +01:00
Valentin Gagarin
4f95800854 add cross-reference 2023-12-18 11:41:52 +01:00
Julia Evans
a47fabff0d use params.isFetchGit instead to check if it came from fetchGit 2023-12-17 12:14:55 -05:00
Julia Evans
06bed2eacd Make fetchTree locked input error message clearer 2023-12-17 12:04:59 -05:00
David Arnold
c05d4fadd5
fix: valid branch name 2023-12-16 23:14:33 +01:00
Rebecca Turner
5cb98095ba
Remove some blank lines from stack traces
This keeps hint messages, source location information, and source code
snippets grouped together, while making stack traces shorter (so that
more stack frames can be viewed on the same terminal).

Before:

    error:
           … while evaluating the attribute 'body'

             at /Users/wiggles/nix/tests/functional/lang/eval-fail-assert.nix:4:3:

                3|
                4|   body = x "x";
                 |   ^
                5| }

           … from call site

             at /Users/wiggles/nix/tests/functional/lang/eval-fail-assert.nix:4:10:

                3|
                4|   body = x "x";
                 |          ^
                5| }

           … while calling 'x'

             at /Users/wiggles/nix/tests/functional/lang/eval-fail-assert.nix:2:7:

                1| let {
                2|   x = arg: assert arg == "y"; 123;
                 |       ^
                3|

           error: assertion '(arg == "y")' failed

           at /Users/wiggles/nix/tests/functional/lang/eval-fail-assert.nix:2:12:

                1| let {
                2|   x = arg: assert arg == "y"; 123;
                 |            ^
                3|

After:

    error:
           … while evaluating the attribute 'body'
             at /Users/wiggles/nix/tests/functional/lang/eval-fail-assert.nix:4:3:
                3|
                4|   body = x "x";
                 |   ^
                5| }

           … from call site
             at /Users/wiggles/nix/tests/functional/lang/eval-fail-assert.nix:4:10:
                3|
                4|   body = x "x";
                 |          ^
                5| }

           … while calling 'x'
             at /Users/wiggles/nix/tests/functional/lang/eval-fail-assert.nix:2:7:
                1| let {
                2|   x = arg: assert arg == "y"; 123;
                 |       ^
                3|

           error: assertion '(arg == "y")' failed
           at /Users/wiggles/nix/tests/functional/lang/eval-fail-assert.nix:2:12:
                1| let {
                2|   x = arg: assert arg == "y"; 123;
                 |            ^
                3|
2023-12-15 23:57:26 -08:00
John Ericson
e7d95a1d80 Merge remote-tracking branch 'upstream/master' into tarball-cache 2023-12-15 09:37:13 -05:00
Matthew Bauer
bcbdb09ccf Add eval-system option
`eval-system` option overrides just the value of `builtins.currentSystem`.
This is more useful than overriding `system` since you can build these
derivations on remote builders which can work on the given system.

Co-authored-by: John Ericson <John.Ericson@Obsidian.Systems>
Co-authored-by: Valentin Gagarin <valentin.gagarin@tweag.io>
2023-12-14 19:04:00 -05:00
John Ericson
e13fc0bbdb Fix sys/xattr.h check
I wrote the `configure.ac` wrong, and so we just got no builds
supporting ACLs.

Also, it needs to be more precise because Darwin puts other stuff in
that same header, evidently.
2023-12-14 10:03:48 -05:00
Eelco Dolstra
06e106beff Disable GitHub tree hash mismatch warning 2023-12-14 13:38:10 +01:00
Eelco Dolstra
1fce12ec32 Merge remote-tracking branch 'origin/master' into tarball-cache 2023-12-14 13:31:29 +01:00