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11986 commits

Author SHA1 Message Date
Théophane Hufschmitt 516a7ac4de
Merge pull request #6229 from obsidiansystems/refactor-hash-modulo
Overhaul derivation hash modulo somewhat
2022-03-15 21:23:44 +01:00
regnat 2d5c43f210 Fix the tests on 32bits machines
year 2222 is too much for a 32 bit timestamp. So replace it by something
smaller
2022-03-15 21:05:01 +01:00
Théophane Hufschmitt ba9e69cdcd
Merge pull request #6119 from Ma27/path-mtime
libfetchers/path: set `lastModified` to path's mtime
2022-03-15 17:51:16 +01:00
Maximilian Bosch 975bade7f0
Implement simple test for path-fetcher setting a correct lastModifiedDate
Co-authored-by: Théophane Hufschmitt <7226587+thufschmitt@users.noreply.github.com>
2022-03-15 12:55:32 +01:00
Maximilian Bosch 244baff2c7
libfetchers: remove obsolete filesystem #include 2022-03-15 12:32:11 +01:00
Maximilian Bosch 34e20c164c
libfetchers/path: set lastModified to path's mtime
When importing e.g. a local `nixpkgs` in a flake to test a change like

    {
      inputs.nixpkgs.url = path:/home/ma27/Projects/nixpkgs;
      outputs = /* ... */
    }

then the input is missing a `lastModified`-field that's e.g. used in
`nixpkgs.lib.nixosSystem`. Due to the missing `lastMoified`-field, the
mtime is set to 19700101:

    result -> /nix/store/b7dg1lmmsill2rsgyv2w7b6cnmixkvc1-nixos-system-nixos-22.05.19700101.dirty

With this change, the `path`-fetcher now sets a `lastModified` attribute
to the `mtime` just like it's the case in the `tarball`-fetcher already.
When building NixOS systems with `nixpkgs` being a `path`-input and this
patch, the output-path now looks like this:

    result -> /nix/store/ld2qf9c1s98dxmiwcaq5vn9k5ylzrm1s-nixos-system-nixos-22.05.20220217.dirty
2022-03-15 12:32:11 +01:00
Eelco Dolstra a61809722f
Merge pull request #6244 from Artturin/nixenvbettermessage
nix-env: Add a suggestion for when there's a name collision in channels
2022-03-14 14:17:50 +01:00
Théophane Hufschmitt 0e86ebf461
Merge pull request #6220 from obsidiansystems/log-store
Factor out a `LogStore` interface
2022-03-14 10:51:01 +01:00
Eelco Dolstra edfd94c486
Merge pull request #6248 from thkoch2001/patch-1
Add documentation= entry to systemd unit file
2022-03-14 10:34:18 +01:00
thkoch2001 e06b264f94
Add documentation= entry to systemd unit file
Closes: #6246
2022-03-13 18:42:26 +02:00
Sergei Trofimovich 6b1872312f nix store gc: account for auto-optimised store
Before the change on a system with `auto-optimise-store = true`:

    $ nix store gc --verbose --max 1

deleted all the paths instead of one path (we requested 1 byte limit).

It happens because every file in `auto-optimise-store = true` has at
least 2 links: file itself and a link in /nix/store/.links/ directory.

The change conservatively assumes that any file that has one (as before)
or two links (assume auto-potimise mode) will free space.

Co-authored-by: Sandro <sandro.jaeckel@gmail.com>
2022-03-13 07:24:48 +00:00
Artturin cb1a76112e nix-env: Add a suggestion for when there's a name collision in channels
help new users find a solution to their problem

./result/bin/nix-env -qa hello
warning: name collision in input Nix expressions, skipping '/home/artturin/.nix-defexpr/channels_root/master'
suggestion: remove 'master' from either the root channels or the user channels
hello-2.12
hello-2.12
2022-03-13 00:24:46 +02:00
John Ericson 91adfb8894 Create some type aliases for string Contexts 2022-03-11 22:30:10 +00:00
John Ericson 0948b8e94d Reduce variants for derivation hash modulo
This changes was taken from dynamic derivation (#4628). It` somewhat
undoes the refactors I first did for floating CA derivations, as the
benefit of hindsight + requirements of dynamic derivations made me
reconsider some things.

They aren't to consequential, but I figured they might be good to land
first, before the more profound changes @thufschmitt has in the works.
2022-03-11 21:20:37 +00:00
Eelco Dolstra d5322698a2
Merge pull request #6230 from obsidiansystems/nix-build-derived-path
Desugar `StorePathWithOutputs` in nix-build implementation
2022-03-11 22:19:56 +01:00
John Ericson 015d2ad507 Desugar StorePathWithOutputs in nix-build implementation
`DerivedPath` has replaced `StorePathWithOutputs` internally, so
shrinking the usage of `StorePathWithOutputs` to just the boundary is
good.
2022-03-11 20:50:52 +00:00
Kevin Amado 2191dab657
nix-fmt: add command 2022-03-11 10:00:19 -05:00
John Ericson a03b1fd7f6 Deduplicate the Store downcasting with a template 2022-03-11 13:32:33 +00:00
John Ericson 678d1c2aa0 Factor out a LogStore interface
Continue progress on #5729.

Just as I hoped, this uncovered an issue: the daemon protocol is missing
a way to query build logs. This doesn't effect `unix://`, but does
effect `ssh://`. A FIXME is left for this, so we come back to it later.
2022-03-11 13:32:16 +00:00
John Ericson 89effe9d4a GcStore::resolve should print the URI 2022-03-11 13:27:38 +00:00
John Ericson 073e134de6 Rename requireGcStore to GcStore::require
I should have done this to begin with. This will be nicer once more
Store sub-interfaces exist too, to illustrate the pattern.
2022-03-11 13:27:38 +00:00
Eelco Dolstra aee56e0f89 Merge remote-tracking branch 'origin/eval-suggestions' 2022-03-11 12:02:26 +01:00
Eelco Dolstra 31a392dfe2 Merge pull request #5865 from pennae/memory-friendliness
be more memory friendly
2022-03-11 11:52:39 +01:00
Eelco Dolstra 167766b65c Style 2022-03-11 11:19:21 +01:00
Théophane Hufschmitt 7ebd6f1093
Merge pull request #5758 from mschwaig/fix-git-workspace-dirty-detection
git fetcher: fix detection of dirty git workspaces
2022-03-11 09:35:01 +01:00
Eelco Dolstra 4d98143914 BuildResult: Remove unused drvPath field 2022-03-09 20:31:50 +01:00
Eelco Dolstra 1c1a7074da
Merge pull request #6221 from NixOS/build-paths-with-results
Add Store::buildPathsWithResults()
2022-03-09 14:37:14 +01:00
Eelco Dolstra 761242afa0 BuildResult: Use DerivedPath 2022-03-09 12:25:35 +01:00
pennae 4d629c4f7a add HAVE_BOEHMGC guards to batched allocation functions 2022-03-09 00:18:50 +01:00
pennae 8e2eaaaf69 make Finally more local
no need for function<> with c++17 deduction. this saves allocations and virtual
calls, but has the same semantics otherwise. not going through function has the
side effect of giving compilers more insight into the cleanup code, so we need a
few local warning disables.
2022-03-09 00:16:50 +01:00
pennae 47baa9d43c make Pos smaller
reduces peak hep memory use on eval of our test system from 264.4MB to 242.3MB,
possibly also a slight performance boost.

theoretically memory use could be cut down by another eight bytes per Pos on
average by turning it into a tuple containing an index into a global base
position table with row and column offsets, but that doesn't seem worth the
effort at this point.
2022-03-08 23:30:18 +01:00
pennae c96460f352 force-inline a few much-used functions
these functions are called a whole lot, and they're all comparatively small.
always inlining them gives ~0.7% performance boost on eval.

before:

  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

after:

  Benchmark 1: nix flakes search --no-eval-cache --offline ../nixpkgs hello
    Time (mean ± σ):      6.912 s ±  0.036 s    [User: 5.823 s, System: 0.856 s]
    Range (min … max):    6.849 s …  6.980 s    20 runs

  Benchmark 2: nix flakes eval -f ../nixpkgs/pkgs/development/haskell-modules/hackage-packages.nix
    Time (mean ± σ):     325.1 ms ±   2.5 ms    [User: 293.2 ms, System: 31.8 ms]
    Range (min … max):   322.2 ms … 332.8 ms    20 runs

  Benchmark 3: nix flakes eval --raw --impure --file expr.nix
    Time (mean ± σ):      2.636 s ±  0.024 s    [User: 2.352 s, System: 0.226 s]
    Range (min … max):    2.574 s …  2.681 s    20 runs
2022-03-08 23:30:18 +01:00
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