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Author SHA1 Message Date
pennae 60ed4e908a cache singleton Envs just like Values 
vast majority of envs is this size.

before:

  Benchmark 1: nix flakes search --no-eval-cache --offline ../nixpkgs hello
    Time (mean ± σ):      6.946 s ±  0.041 s    [User: 5.875 s, System: 0.835 s]
    Range (min … max):    6.834 s …  7.005 s    20 runs

  Benchmark 2: nix flakes eval -f ../nixpkgs/pkgs/development/haskell-modules/hackage-packages.nix
    Time (mean ± σ):     330.3 ms ±   2.5 ms    [User: 299.2 ms, System: 30.9 ms]
    Range (min … max):   327.5 ms … 337.7 ms    20 runs

  Benchmark 3: nix eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'
    Time (mean ± σ):      2.671 s ±  0.035 s    [User: 2.370 s, System: 0.232 s]
    Range (min … max):    2.597 s …  2.749 s    20 runs

after:

  Benchmark 1: nix flakes search --no-eval-cache --offline ../nixpkgs hello
    Time (mean ± σ):      6.935 s ±  0.052 s    [User: 5.852 s, System: 0.853 s]
    Range (min … max):    6.808 s …  7.026 s    20 runs

  Benchmark 2: nix flakes eval -f ../nixpkgs/pkgs/development/haskell-modules/hackage-packages.nix
    Time (mean ± σ):     329.8 ms ±   2.7 ms    [User: 299.0 ms, System: 30.8 ms]
    Range (min … max):   326.6 ms … 336.5 ms    20 runs

  Benchmark 3: nix flakes eval --raw --impure --file expr.nix
    Time (mean ± σ):      2.655 s ±  0.038 s    [User: 2.364 s, System: 0.220 s]
    Range (min … max):    2.574 s …  2.737 s    20 runs
 2022-03-08 23:30:18 +01:00
pennae 4b2b0d3a55 remove GC_PTR_STORE_AND_DIRTY 
turns out it's only necessary for MANUAL_VDB, which nix doesn't use. omitting
them gives a slight performance improvement on eval.

before:

  Benchmark 1: nix flakes search --no-eval-cache --offline ../nixpkgs hello
    Time (mean ± σ):      6.988 s ±  0.061 s    [User: 5.935 s, System: 0.845 s]
    Range (min … max):    6.865 s …  7.075 s    20 runs

  Benchmark 2: nix flakes eval -f ../nixpkgs/pkgs/development/haskell-modules/hackage-packages.nix
    Time (mean ± σ):     332.6 ms ±   3.9 ms    [User: 299.6 ms, System: 32.9 ms]
    Range (min … max):   328.1 ms … 339.1 ms    20 runs

  Benchmark 3: nix eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'
    Time (mean ± σ):      2.681 s ±  0.049 s    [User: 2.382 s, System: 0.228 s]
    Range (min … max):    2.607 s …  2.776 s    20 runs

after:

  Benchmark 1: nix flakes search --no-eval-cache --offline ../nixpkgs hello
    Time (mean ± σ):      6.946 s ±  0.041 s    [User: 5.875 s, System: 0.835 s]
    Range (min … max):    6.834 s …  7.005 s    20 runs

  Benchmark 2: nix flakes eval -f ../nixpkgs/pkgs/development/haskell-modules/hackage-packages.nix
    Time (mean ± σ):     330.3 ms ±   2.5 ms    [User: 299.2 ms, System: 30.9 ms]
    Range (min … max):   327.5 ms … 337.7 ms    20 runs

  Benchmark 3: nix eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'
    Time (mean ± σ):      2.671 s ±  0.035 s    [User: 2.370 s, System: 0.232 s]
    Range (min … max):    2.597 s …  2.749 s    20 runs
 2022-03-08 23:30:18 +01:00
Eelco Dolstra a4604f1928 Add Store::buildPathsWithResults() 
This function is like buildPaths(), except that it returns a vector of
BuildResults containing the exact statuses and output paths of each
derivation / substitution. This is convenient for functions like
Installable::build(), because they then don't need to do another
series of calls to get the outputs of CA derivations. It's also a
precondition to impure derivations, where we *can't* query the output
of those derivations since they're not stored in the Nix database.

Note that PathSubstitutionGoal can now also return a BuildStatus.
 2022-03-08 19:56:34 +01:00
regnat f6078e474d Also display some suggestions for invalid formal arguments 
```console
$ nix eval --expr '({ foo ? 1 }: foo) { fob = 2; }'
error: anonymous function at (string):1:2 called with unexpected argument 'fob'

       at «string»:1:1:

            1| ({ foo ? 1 }: foo) { fob = 2; }
             | ^
       Did you mean foo?
```

Not that because Nix will first check for _missing_ arguments before
checking for extra arguments, `({ foo }: foo) { fob = 1; }` will
complain about the missing `foo` argument (rather than extra `fob`) and
so won’t display a suggestion.
 2022-03-08 16:40:22 +01:00
regnat 33b7514035 Try and make the darwin build happy 2022-03-08 16:07:17 +01:00
regnat 0c6e46e349 Add some suggestions to the evaluator 
Make the evaluator show some suggestions when trying to access an
invalid field from an attrset.

```console
$ nix eval --expr '{ foo = 1; }.foa'
error: attribute 'foa' missing

       at «string»:1:1:

            1| { foo = 1; }.foa
             | ^
       Did you mean foo?
```
 2022-03-08 06:21:45 +01:00
Eelco Dolstra 92b8d4d886 Bump version 2022-03-07 20:12:35 +01:00
Eelco Dolstra ad7c99ef20 Move rl-next.md to rl-2.7.md 2022-03-07 20:10:18 +01:00
Eelco Dolstra 504e3b2a8f Style 2022-03-07 20:07:43 +01:00
Eelco Dolstra fa614fac7f Merge branch 'GuillaumeDesforges/issue6192' of https://github.com/GuillaumeDesforges/nix 2022-03-07 19:58:06 +01:00
Eelco Dolstra 0123b9aec8 Tweak release notes 2022-03-07 19:56:10 +01:00
Eelco Dolstra 30ddd37873 Merge branch 'cli-suggestions' of https://github.com/thufschmitt/nix 2022-03-07 19:47:45 +01:00
Guillaume Desforges 436c6e900f Explicit error in flake init/new when not in store 2022-03-07 17:57:52 +01:00
regnat dcf4f77fac Merge or-suggestions.hh into suggestions.hh 
No real need for keeping a separate header for such a simple class.

This requires changing a bit `OrSuggestions<T>::operator*` to not throw
an `Error` to prevent a cyclic dependency. But since this error is only
thrown on programmer error, we can replace the whole method by a direct
call to `std::get` which will raise its own assertion if needs be.
 2022-03-07 17:49:02 +01:00
Eelco Dolstra 60a68a4fee
Merge pull request #6173 from hercules-ci/fix-mkString-for-empty-string-view 
Fix `mkString` for empty `string_view`
 2022-03-07 17:10:41 +01:00
Robert Hensing da260f579d dupStringWithLen -> makeImmutableString 
Refactor the `size == 0` logic into a new helper function that
replaces dupStringWithLen.
The name had to change, because unlike a `dup`-function, it does
not always allocate a new string.
 2022-03-07 16:09:12 +01:00
Robert Hensing bbf55383e7 Value::mkPath: Avoid potential crash from null string_view 2022-03-07 16:09:12 +01:00
Robert Hensing 1b978596b5 Value::mkString: Avoid crash from null string_view 2022-03-07 16:09:12 +01:00
Naïm Favier da7d8daa77
Add shell completion for --override-flake 
Requires moving the MixEvalArgs class from libexpr to libcmd because
that's where completeFlakeRef is.
 2022-03-07 12:01:54 +01:00
Naïm Favier 55c6906701
Perform tilde expansion when completing flake fragments 
Allows completing `nix build ~/flake#<Tab>`.
We can implement expansion for `~user` later if needed.
Not using wordexp(3) since that expands way too much.
 2022-03-07 12:01:54 +01:00
Naïm Favier 5461ff532d
Make completeDir follow symlinks 
Allows completing `nix why-depends /run/cur<Tab>` to /run/current-system
 2022-03-07 12:01:54 +01:00
Naïm Favier a6d7cd4183
Ensure the completion marker is not processed beyond completion 
I was surprised to see an error mentioning ___COMPLETE___ when trying to
complete a flag argument that had no completer implemented
 2022-03-07 12:01:54 +01:00
Naïm Favier 5f06a91bf7
Fix completion of nested attributes in completeInstallable 
Without this, completing `nix eval -f file.nix foo.<Tab>` suggests `bar`
instead of `foo.bar`, which messes up the command
 2022-03-07 12:01:54 +01:00
Naïm Favier 7ddcb39206
Add shell completion for --override-input 2022-03-07 12:01:54 +01:00
Naïm Favier 7f5cf87d56
Accept and discard fragments in getFlakeRefForCompletion 
Otherwise trying to complete `nix build foo#bar --update-input <Tab>`
fails with "unexpected fragment"
 2022-03-07 12:01:54 +01:00
Guillaume Maudoux 13c4dc6532 more fixes 2022-03-07 11:33:03 +01:00
Eelco Dolstra c28e2b1b29 Tweak release notes 2022-03-07 11:30:40 +01:00
regnat 313bbc07a8 Implement operator<< for Suggestions 
That way there’s no need to explicitely convert it to a string when
printing it
 2022-03-07 10:09:10 +01:00
regnat fd45d85b41 Move OrSuggestions to its own header 
Prevents a recursive inclusion
 2022-03-07 10:09:10 +01:00
regnat b44cebd1fd Add a release-notes entry for the cli suggestions 2022-03-07 10:09:10 +01:00
regnat 91635206c0 Add some end-to-end tests for the suggestions 2022-03-07 10:09:10 +01:00
regnat 98e361ad4c Also display suggestions for the commands using the eval cache 
Make `nix build .#nix-armv8l-linux` work for example
 2022-03-07 10:09:10 +01:00
regnat 2405bbbb5e Add some tests for the suggestions 2022-03-07 10:09:10 +01:00
regnat c0792b1546 Implement a suggestions mechanism 
Each `Error` class now includes a set of suggestions, and these are printed by
the top-level handler.
 2022-03-07 10:09:09 +01:00
Théophane Hufschmitt a2ace54fe4
Merge pull request #6029 from Ma27/nix-log-ssh-ng 
ssh-ng: also store build logs to make them accessible by `nix log`
 2022-03-07 09:51:40 +01:00
Théophane Hufschmitt 860016bcbf
Explain why the log tests are disabled for CA derivations 2022-03-07 09:15:34 +01:00
Théophane Hufschmitt 2051c0f409
Merge pull request #6208 from sielicki/fix-url-github-oauth 
Point to new github oauth docs url
 2022-03-07 08:54:50 +01:00
Nicholas Sielicki 314852a10e
Point to new github oauth docs url 
Previous URL was 404'ing.
 2022-03-06 17:01:14 -06:00
Guillaume Maudoux 1b5a8db148 change error location for genericClosure operator errors 2022-03-05 21:19:04 +01:00
Guillaume Maudoux 4078015927 DRY addPrimOp 2022-03-05 21:18:30 +01:00
Guillaume Maudoux cbbbf36881 Use 'errorCtx' name everywhere 2022-03-04 22:55:14 +01:00
Guillaume Maudoux 57684d6247 fixup! s/forceValue/forceFunction/ where applicable 2022-03-04 22:51:56 +01:00
Guillaume Maudoux ed02fa3c40 s/forceValue/forceFunction/ where applicable 2022-03-04 22:15:30 +01:00
Guillaume Maudoux 3a5855353e Add detailed error mesage for coerceTo{String,Path} 2022-03-04 21:47:58 +01:00
Maximilian Bosch 697d1dac01
tests: grep for string in nix log for remote-builds 2022-03-04 16:58:27 +01:00
Guillaume Maudoux be1f069746 Add error context for most basic coercions 2022-03-04 05:04:47 +01:00
Guillaume Maudoux 00e242feed Add some context to coercion error strings 2022-03-03 21:46:20 +01:00
Eelco Dolstra b09baf690b
Merge pull request #6188 from obsidiansystems/store-gc-subclass 
Factor out a `GcStore` interface
 2022-03-03 20:53:10 +01:00
John Ericson 6636202356 Factor out a GcStore interface 
Starts progress on #5729.

The idea is that we should not have these default methods throwing
"unimplemented". This is a small step in that direction.

I kept `addTempRoot` because it is a no-op, rather than failure. Also,
as a practical matter, it is called all over the place, while doing
other tasks, so the downcasting would be annoying.

Maybe in the future I could move the "real" `addTempRoot` to `GcStore`,
and the existing usecases use a `tryAddTempRoot` wrapper to downcast or
do nothing, but I wasn't sure whether that was a good idea so with a
bias to less churn I didn't do it yet.
 2022-03-03 19:01:25 +00:00
Eelco Dolstra 391f4fcabe
Merge pull request #6201 from edolstra/print-value 
printValue(): Don't show repeated values
 2022-03-03 14:35:16 +01:00