Commit graph

9978 commits

Author SHA1 Message Date
Rebecca Turner
403c90ddf5
Extract printSpace helper 2024-02-08 10:18:12 -08:00
Rebecca Turner
1c5f5d4291
prettyPrint -> shouldPrettyPrint 2024-02-08 10:18:10 -08:00
Rebecca Turner
a27651908f
Add assertion for decreasing the indent
Co-authored-by: Théophane Hufschmitt <7226587+thufschmitt@users.noreply.github.com>
2024-02-08 10:11:45 -08:00
John Ericson
4687beecef Get rid of CanonPath::fromCwd
As discussed in the last Nix team meeting (2024-02-95), this method
doesn't belong because `CanonPath` is a virtual/ideal absolute path
format, not used in file systems beyond the native OS format for which a
"current working directory" is defined.

Progress towards #9205
2024-02-08 11:01:41 -05:00
Eelco Dolstra
6563a58294
Merge pull request #9964 from fricklerhandwerk/merge-format-sections
move JSON section into Formats and Protocols
2024-02-08 16:53:59 +01:00
Théophane Hufschmitt
a8050d9b83
Merge pull request #9928 from 9999years/error-messages-in-nix-repl
Improve error printing in `nix repl`
2024-02-08 16:21:13 +01:00
Théophane Hufschmitt
46a0625a40
Merge pull request #9929 from 9999years/dont-print-values-in-magenta
Don't print the first bracket in values in magenta in error messages
2024-02-08 10:56:18 +01:00
Théophane Hufschmitt
9b8b486091
Merge pull request #9933 from pennae/debugger-fix
fix debugger crashing while printing envs
2024-02-08 10:48:02 +01:00
Théophane Hufschmitt
acef4f17a2
Merge pull request #9918 from 9999years/debugger-locals-for-let-expressions
Expose locals from `let` expressions to the debugger
2024-02-08 10:17:55 +01:00
Théophane Hufschmitt
c4ed92fa6f
Merge pull request #9917 from 9999years/enter-debugger-more-reliably
Enter debugger more reliably in `let` expressions and function calls
2024-02-08 10:09:54 +01:00
Théophane Hufschmitt
fb78a99e04
Merge pull request #9924 from 9999years/rename-yellowtxt
Rename `yellowtxt` -> `magentatxt`
2024-02-08 10:01:30 +01:00
Théophane Hufschmitt
f388a6148d
Merge pull request #9919 from 9999years/reduce-debugger-clutter
Reduce visual clutter in the debugger
2024-02-08 09:42:38 +01:00
Théophane Hufschmitt
d24c8aa491
Simplify a conditional in the repl initialisation 2024-02-08 09:22:30 +01:00
Valentin Gagarin
e486b76eef move JSON section into Formats and Protocols 2024-02-08 09:13:58 +01:00
Rebecca Turner
9723f533d8
Add comment 2024-02-06 16:50:47 -08:00
Rebecca Turner
474fc4078a
Add comments 2024-02-06 16:49:28 -08:00
Rebecca Turner
c0a15fb7d0
Pretty-print values in the REPL
Pretty-print values in the REPL by printing each item in a list or
attrset on a separate line. When possible, single-item lists and
attrsets are printed on one line, as long as they don't contain a nested
list, attrset, or thunk.

Before:
```
{ attrs = { a = { b = { c = { }; }; }; }; list = [ 1 ]; list' = [ 1 2 3 ]; }
```

After:
```
{
  attrs = {
    a = {
      b = {
        c = { };
      };
    };
  };
  list = [ 1 ];
  list' = [
    1
    2
    3
  ];
}
```
2024-02-05 13:23:38 -08:00
Robert Hensing
a31f2cb0cd
Merge pull request #9939 from edolstra/slash-operator
CanonPath, SourcePath: Change operator + to /
2024-02-05 15:55:27 +01:00
Eelco Dolstra
a6737b7e17 CanonPath, SourcePath: Change operator + to /
This is less confusing and makes it more similar to std::filesystem::path.
2024-02-05 15:17:39 +01:00
Eelco Dolstra
c291d2d8dd
Merge pull request #9927 from 9999years/catch-error-in-value-printer
Catch `Error`, not `BaseError` in `ValuePrinter`
2024-02-05 15:01:21 +01:00
Eelco Dolstra
6ec08b85f6
Merge pull request #9934 from nmeum/absPath-out-of-bounds
absPath: Explicitly check if path is empty before accessing it
2024-02-05 14:44:02 +01:00
Eelco Dolstra
e190c20c33
Merge pull request #9926 from 9999years/fix-cycle-detection-in-nix-repl
Fix cycle detection in `nix repl`
2024-02-05 14:24:28 +01:00
pennae
5ccb06ee1b fix debugger crashing while printing envs
fixes #9932
2024-02-04 17:12:04 +01:00
Rodney Lorrimar
e1131b5927
print-dev-env: Avoid using unbound shellHook variable
Some tools which consume the "nix print-dev-env" rc script (such as
"nix-direnv") are sensitive to the use of unbound variables. They use
"set -u".

The "nix print-dev-env" rc script initially unsets "shellHook", then
loads variables from the derivation, and then evaluates "shellHook".
However, most derivations don't have a "shellHook" attribute.

So users get the error "shellHook: unbound variable". This can be
demonstrated with the command:

    nix print-dev-env nixpkgs#hello | bash -u

This commit changes the rc script to provide an empty fallback value
for the "shellHook" variable.

Closes: #7951 #8253
2024-02-04 13:57:13 +08:00
Rebecca Turner
770d2bc779
Key repeated values on attribute binding pointers, not value pointers
Closes #8672
2024-02-03 21:23:06 -08:00
Rebecca Turner
9646d62b0c
Don't print values in magenta
This fixes the opening bracket of lists/attrsets being printed in
magenta, unlike the closing bracket.

https://github.com/NixOS/nix/pull/9753#issuecomment-1904616088
2024-02-03 21:17:22 -08:00
Rebecca Turner
c5d525cd84
Print error messages but not traces
This makes output of values that include errors much cleaner.

Before:
```
nix-repl> { err = builtins.throw "uh oh!"; }
{ err = «error:
       … while calling the 'throw' builtin
         at «string»:1:9:
            1| { err = builtins.throw "uh oh!"; }
             |         ^

       error: uh oh!»; }
```

After:
```
nix-repl> { err = builtins.throw "uh oh!"; }
{ err = «error: uh oh!»; }
```

But if the whole expression throws an error, source locations and (if
applicable) a stack trace are printed, like you'd expect:

```
nix-repl> builtins.throw "uh oh!"
error:
       … while calling the 'throw' builtin
         at «string»:1:1:
            1| builtins.throw "uh oh!"
             | ^

       error: uh oh!
```
2024-02-03 20:50:16 -08:00
Rebecca Turner
a7927abdc1
Catch Error, not BaseError in ValuePrinter
`BaseError` includes `Interrupt`. We probably don't want the value
printer to tell you you pressed Ctrl-C while it was working.
2024-02-03 19:29:07 -08:00
Rebecca Turner
a7939a6c2a
Rename yellowtxt -> magentatxt
`yellowtxt` wraps its value with `ANSI_WARNING`, but `ANSI_WARNING` has
been equal to `ANSI_MAGENTA` for a long time. Now the name is updated.
2024-02-03 19:28:11 -08:00
Sören Tempel
ec5cc1026d absPath: Explicitly check if path is empty before accessing it
It is entirely possible for the path to be an empty string and many
unit tests actually pass it as an empty string (e.g. both_roundrip or
turnsEmptyPathIntoCWD). In this case, without this patch, absPath will
perform a one-byte out-of-bounds access.

This was discovered while enabling the nix test suite on Alpine where
we compile all software with `-D_GLIBCXX_ASSERTIONS=1`, thus resulting
in a test failure on Alpine.
2024-02-04 00:47:47 +01:00
Rebecca Turner
6414cd259e
Reduce visual clutter in the debugger 2024-02-02 19:58:35 -08:00
Rebecca Turner
36dfac7560
Expose locals from let expressions to the debugger 2024-02-02 19:31:18 -08:00
Rebecca Turner
0127d54d5e
Enter debugger more reliably in let expressions and calls 2024-02-02 19:14:22 -08:00
Rebecca Turner
016db2d10f
Add position information to while evaluating the attribute 2024-02-02 17:49:54 -08:00
Rebecca Turner
7d7483cafc
Print positions in --debugger, instead of pointers 2024-02-02 17:38:46 -08:00
Rebecca Turner
faaccecbc8
Remove EXCEPTION_NEEDS_THROW_SPEC
We're on C++ 20 now, we don't need this
2024-02-01 16:39:38 -08:00
Rebecca Turner
87dc4bc7d1
Attach positions to errors in derivationStrict 2024-02-01 16:39:38 -08:00
Rebecca Turner
c6a89c1a16
libexpr: Support structured error classes
While preparing PRs like #9753, I've had to change error messages in
dozens of code paths. It would be nice if instead of

    EvalError("expected 'boolean' but found '%1%'", showType(v))

we could write

    TypeError(v, "boolean")

or similar. Then, changing the error message could be a mechanical
refactor with the compiler pointing out places the constructor needs to
be changed, rather than the error-prone process of grepping through the
codebase. Structured errors would also help prevent the "same" error
from having multiple slightly different messages, and could be a first
step towards error codes / an error index.

This PR reworks the exception infrastructure in `libexpr` to
support exception types with different constructor signatures than
`BaseError`. Actually refactoring the exceptions to use structured data
will come in a future PR (this one is big enough already, as it has to
touch every exception in `libexpr`).

The core design is in `eval-error.hh`. Generally, errors like this:

    state.error("'%s' is not a string", getAttrPathStr())
      .debugThrow<TypeError>()

are transformed like this:

    state.error<TypeError>("'%s' is not a string", getAttrPathStr())
      .debugThrow()

The type annotation has moved from `ErrorBuilder::debugThrow` to
`EvalState::error`.
2024-02-01 16:39:38 -08:00
Rebecca Turner
c62c21e29a
Move PodIdx to pos-idx.hh and PosTable to pos-table.hh 2024-02-01 13:12:59 -08:00
Eelco Dolstra
b8b739e484 builtin:fetchurl: Get output hash info from the drv 2024-02-01 22:01:02 +01:00
Eelco Dolstra
1ee42c5b88 builtin:fetchurl: Ensure a fixed-output derivation
Previously we didn't check that the derivation was fixed-output, so
you could use builtin:fetchurl to impurely fetch a file.
2024-02-01 21:46:01 +01:00
Eelco Dolstra
ef6d055ace
Merge pull request #9896 from hercules-ci/tidy-tidy
Disable a slightly annoying clang-tidy check
2024-02-01 09:02:46 +01:00
Robert Hensing
0f2e9e6bd2 Typo 2024-02-01 01:01:04 +01:00
Robert Hensing
4072a8fea0
Merge pull request #9867 from hercules-ci/issue-912
#912 allow leading period
2024-01-31 19:10:59 +01:00
Robert Hensing
f1b4663805 Disallow store path names that are . or .. (plus opt. -)
As discussed in the maintainer meeting on 2024-01-29.

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

What matters most is preventing a situation where . or .. can be
injected, and to just get this done.
2024-01-31 18:35:19 +01:00
John Ericson
caea7dcb7e Change an allowPath call to take a store path again
This looks like a revert of #5844, but is not.

That one was needed because
d90f9d4b99 (diff-0f59bb6f197822ef9f19ceae9624989499d170c84dfdc1f486a8959bb4588cafR85)
changed the type of the argument to `allowPath` from a `StorePath` to a
`Path`. But since
caabc4f648 (diff-0f59bb6f197822ef9f19ceae9624989499d170c84dfdc1f486a8959bb4588cafL100-R92),
it is a `StorePath` again.

I think this is worth changing because we want to be very careful about
`toRealPath` and the evaluator --- ideally the choice of real path does
not affect evaluation at all. So using it fewer times is better.
2024-01-31 11:44:06 -05:00
Eelco Dolstra
b36ff47e7c Resolve symlinks in a few more places
Fixes #9882.
2024-01-30 15:35:31 +01:00
Eelco Dolstra
9465c8cca1 nix hash convert: Add manpage 2024-01-29 17:51:01 +01:00
Eelco Dolstra
6f86f87043 Fix formatting of hash args 2024-01-29 17:50:25 +01:00
Robert Hensing
40254092dd
Merge pull request #9770 from hercules-ci/refactor-rename-derivation-isPure
Refactor rename derivation type `isPure`
2024-01-27 11:24:20 +01:00
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