Commit graph

836 commits

Author SHA1 Message Date
Michal Sojka
a0c4d58549 Remove RegisterPrimOp constructor without support for documentation
The remaining constructor RegisterPrimOp::RegisterPrimOp(Info && info)
allows specifying the documentation in .args and .doc members of the
Info structure.

Commit 8ec1ba0210 removed all uses of the removed constructor in the
nix binary. Here, we remove the constructor completely as well as its
use in a plugin test. According to #8515, we didn't promis to maintain
compatibility with external plugins.

Fixes #8515
2023-06-14 22:37:52 +02:00
John Ericson
61a3e1f2e2
Merge pull request #4282 from tweag/fix-ca-hash-rewriting
fix the hash rewriting for ca-derivations
2023-06-14 18:25:00 +02:00
Eelco Dolstra
9a5b9c588f
Merge pull request #8421 from fricklerhandwerk/doc-replaceStrings
update documentation according to release notes
2023-05-31 12:10:32 +02:00
Valentin Gagarin
738c0d5064
Merge pull request #8318 from fricklerhandwerk/doc-currentTime
document `builtins.currentTime`
2023-05-31 03:15:54 +02:00
Valentin Gagarin
9afd525e18 update documentation according to release notes 2023-05-30 22:58:15 +02:00
Robert Hensing
bed2fe2312
Merge pull request #8398 from polykernel/perf/lazy-eval-replacements-replacestrings
primops: lazy evaluation of replaceStrings replacements
2023-05-30 22:49:42 +02:00
Eelco Dolstra
e4aebccf20 Restore Nix 2.3 behaviour for {__impure,__contentAddressed} = false
Fixes #8405.
2023-05-27 17:53:30 +02:00
polykernel
a382919d7d
primops: lazy evaluation of replaceStrings replacements
The primop `builtins.replaceStrings` currently always strictly evaluates the
replacement strings, however time and space are wasted for their computation
if the corresponding pattern do not occur in the input string. This commit
makes the evaluation of the replacement strings lazy by deferring their
evaluation to when the corresponding pattern are matched and memoize the result
for efficient retrieval on subsequent matches.

The testcases for replaceStrings was updated to check for lazy evaluation
of the replacements. A note was also added in the release notes to
document the behavior change.
2023-05-25 18:35:23 -04:00
Théophane Hufschmitt
3ebe1341ab Make RewritingSink accept a map of rewrites
Giving it the same semantics as `rewriteStrings`.
Also add some tests for it
2023-05-24 14:11:50 +02:00
John Ericson
b9e5ce4a27 Upgrade downstreamPlaceholder to a type with methods
This gets us ready for dynamic derivation dependencies (part of RFC 92).
2023-05-17 17:41:16 -04:00
Valentin Gagarin
6a5a8f51bb add cross-references to pure evaluation mode
use consistent wording everywhere.
add some details on the configuration option documentation.
2023-05-17 15:01:54 +02:00
John Ericson
8e1a990268 Expose mkOutputString as method of EvalState 2023-05-15 09:03:37 -04:00
John Ericson
0a9afce3b9 Split mkOutputString in two
This well help us with some unit testing
2023-05-15 09:03:37 -04:00
John Ericson
9550c3862f Remove unneeded argument for mkOutputString 2023-05-15 09:03:37 -04:00
John Ericson
53a1354acf
Merge pull request #3959 from obsidiansystems/ca-drv-exotic
Derivations can output "text-hashed" data
2023-05-10 10:41:59 -04:00
Frédéric Christ
f0d2b7eef3 Doc: Improve builtins.genericClosure 2023-04-26 09:37:32 +02:00
Eelco Dolstra
01232358ff Merge remote-tracking branch 'origin/master' into source-path 2023-04-24 13:20:36 +02:00
John Ericson
85f0cdc370 Use std::set<StringContextElem> not PathSet for string contexts
Motivation

`PathSet` is not correct because string contexts have other forms
(`Built` and `DrvDeep`) that are not rendered as plain store paths.
Instead of wrongly using `PathSet`, or "stringly typed" using
`StringSet`, use `std::std<StringContextElem>`.

-----

In support of this change, `NixStringContext` is now defined as
`std::std<StringContextElem>` not `std:vector<StringContextElem>`. The
old definition was just used by a `getContext` method which was only
used by the eval cache. It can be deleted altogether since the types are
now unified and the preexisting `copyContext` function already suffices.

Summarizing the previous paragraph:

Old:

  - `value/context.hh`: `NixStringContext = std::vector<StringContextElem>`
  - `value.hh`: `NixStringContext Value::getContext(...)`
  - `value.hh`: `copyContext(...)`

New:

  - `value/context.hh`: `NixStringContext = std::set<StringContextElem>`
  - `value.hh`: `copyContext(...)`
----

The string representation of string context elements no longer contains
the store dir. The diff of `src/libexpr/tests/value/context.cc` should
make clear what the new representation is, so we recommend reviewing
that file first. This was done for two reasons:

Less API churn:

`Value::mkString` and friends did not take a `Store` before. But if
`NixStringContextElem::{parse, to_string}` *do* take a store (as they
did before), then we cannot have the `Value` functions use them (in
order to work with the fully-structured `NixStringContext`) without
adding that argument.

That would have been a lot of churn of threading the store, and this
diff is already large enough, so the easier and less invasive thing to
do was simply make the element `parse` and `to_string` functions not
take the `Store` reference, and the easiest way to do that was to simply
drop the store dir.

Space usage:

Dropping the `/nix/store/` (or similar) from the internal representation
will safe space in the heap of the Nix programming being interpreted. If
the heap contains many strings with non-trivial contexts, the saving
could add up to something significant.

----

The eval cache version is bumped.

The eval cache serialization uses `NixStringContextElem::{parse,
to_string}`, and since those functions are changed per the above, that
means the on-disk representation is also changed.

This is simply done by changing the name of the used for the eval cache
from `eval-cache-v4` to eval-cache-v5`.

----

To avoid some duplication `EvalCache::mkPathString` is added to abstract
over the simple case of turning a store path to a string with just that
string in the context.

Context

This PR picks up where #7543 left off. That one introduced the fully
structured `NixStringContextElem` data type, but kept `PathSet context`
as an awkward middle ground between internal `char[][]` interpreter heap
string contexts and `NixStringContext` fully parsed string contexts.

The infelicity of `PathSet context` was specifically called out during
Nix team group review, but it was agreeing that fixing it could be left
as future work. This is that future work.

A possible follow-up step would be to get rid of the `char[][]`
evaluator heap representation, too, but it is not yet clear how to do
that. To use `NixStringContextElem` there we would need to get the STL
containers to GC pointers in the GC build, and I am not sure how to do
that.

----

PR #7543 effectively is writing the inverse of a `mkPathString`,
`mkOutputString`, and one more such function for the `DrvDeep` case. I
would like that PR to have property tests ensuring it is actually the
inverse as expected.

This PR sets things up nicely so that reworking that PR to be in that
more elegant and better tested way is possible.

Co-authored-by: Théophane Hufschmitt <7226587+thufschmitt@users.noreply.github.com>
2023-04-21 01:05:49 -04:00
John Ericson
7103c6da70 Remove references from fixed output derivation ab syntax
In other words, use a plain `ContentAddress` not
`ContentAddressWithReferences` for `DerivationOutput::CAFixed`.

Supporting fixed output derivations with (fixed) references would be a
cool feature, but it is out of scope at this moment.
2023-04-19 15:00:04 -04:00
John Ericson
668377f217 TextHashMethod -> TextIngestionMethod, gate with XP feature
I suppose we can use `dynamic-derivations` for the few things we neeed.
2023-04-17 19:02:45 -04:00
John Ericson
e12efa3654 Merge remote-tracking branch 'upstream/master' into ca-drv-exotic 2023-04-17 10:16:57 -04:00
Robert Hensing
cb2615cf47 Merge remote-tracking branch 'upstream/master' into source-path 2023-04-17 11:41:50 +02:00
John Ericson
fd21f9d76e Merge remote-tracking branch 'upstream/master' into path-info 2023-04-07 20:39:04 -04:00
Eelco Dolstra
a9759407e5 Origin: Use SourcePath 2023-04-06 15:25:06 +02:00
Eelco Dolstra
94812cca98 Backport SourcePath from the lazy-trees branch
This introduces the SourcePath type from lazy-trees as an abstraction
for accessing files from inputs that may not be materialized in the
real filesystem (e.g. Git repositories). Currently, however, it's just
a wrapper around CanonPath, so it shouldn't change any behaviour. (On
lazy-trees, SourcePath is a <InputAccessor, CanonPath> tuple.)
2023-04-06 13:15:50 +02:00
Robert Hensing
9470ee877d Allow open switch-enum in 5 places 2023-04-03 18:45:20 +02:00
John Ericson
eeecfacb43 Merge branch 'path-info' into ca-drv-exotic 2023-04-01 16:40:32 -04:00
John Ericson
f7f44f7c96 Merge commit 'aa99005004bccc9be506a2a2f162f78bad4bcb41' into ca-drv-exotic 2023-04-01 15:15:32 -04:00
John Ericson
aa99005004 Merge remote-tracking branch 'upstream/master' into path-info
Also improve content-address.hh API docs.
2023-03-30 16:28:53 -04:00
Eelco Dolstra
02050bd055
Typo 2023-03-30 10:49:21 +02:00
Joachim Breitner
1b6cfe6fa1 More precise wording 2023-03-30 10:40:04 +02:00
Joachim Breitner
2e6b95dac7
Update src/libexpr/primops.cc
Co-authored-by: Eelco Dolstra <edolstra@gmail.com>
2023-03-29 13:19:51 +02:00
Joachim Breitner
3ce6d72b2b
Update src/libexpr/primops.cc
Co-authored-by: asymmetric <lorenzo@mailbox.org>
2023-03-28 14:38:39 +02:00
Joachim Breitner
605c8f7789 Docs: Explain why import nixpkgs works in flakes 2023-03-28 09:35:49 +02:00
John Ericson
296831f641 Move enabled experimental feature to libutil struct
This is needed in subsequent commits to allow the settings and CLI args
infrastructure itself to read this setting.
2023-03-20 11:05:22 -04:00
John Ericson
5abd643c6d Merge branch 'path-info' into ca-drv-exotic 2023-02-28 12:46:00 -05:00
John Ericson
d381248ec0 No inheritance for TextInfo and FixedOutputInfo 2023-02-28 12:14:11 -05:00
John Ericson
85bb865d20 Revert "Remove some designated initializers"
This reverts commit ee9eb83a84.
2023-02-28 11:57:20 -05:00
John Ericson
d12f57c2c0 Merge remote-tracking branch 'upstream/master' into path-info 2023-02-28 11:34:34 -05:00
Valentin Gagarin
dda83a59c1
Merge pull request #7158 from sternenseemann/foldl-strict-accumulation-value 2023-02-19 23:54:14 +01:00
John Ericson
ee9eb83a84 Remove some designated initializers
With the switch to C++20, the rules became more strict, and we can no
longer initialize base classes. Make them comments instead.

(BTW
https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2021/p2287r1.html
this offers some new syntax for this use-case. Hopefully this will be
adopted and we can eventually use it.)
2023-02-01 11:25:56 -05:00
John Ericson
e68e8e3cee Merge branch 'path-info' into ca-drv-exotic 2023-01-23 16:54:45 -05:00
John Ericson
c67e0cc58c Merge remote-tracking branch 'upstream/master' into path-info 2023-01-23 11:47:20 -05:00
Robert Hensing
9b56683398
Merge pull request #7447 from aakropotkin/read-file-type
Read file type
2023-01-23 17:37:22 +01:00
Alex Ameen
153ee460c5 primop: add readFileType, optimize readDir
Allows checking directory entry type of a single file/directory.

This was added to optimize the use of `builtins.readDir` on some
filesystems and operating systems which cannot detect this information
using POSIX's `readdir`.

Previously `builtins.readDir` would eagerly use system calls to lookup
these filetypes using other interfaces; this change makes these
operations lazy in the attribute values for each file with application
of `builtins.readFileType`.
2023-01-22 13:45:02 -06:00
Guillaume Maudoux
a9fa2c758b Always display addErrorContext messages in (expanded) traces 2023-01-19 14:14:19 +01:00
Guillaume Maudoux
ca7c5e08c1 Add tests for error traces, and fixes 2023-01-19 14:10:56 +01:00
Guillaume Maudoux
e4726a0c79 Revert "Revert "Merge pull request #6204 from layus/coerce-string""
This reverts commit 9b33ef3879.
2023-01-19 13:23:04 +01:00
Robert Hensing
9b33ef3879 Revert "Merge pull request #6204 from layus/coerce-string"
This reverts commit a75b7ba30f, reversing
changes made to 9af16c5f74.
2023-01-18 01:34:07 +01:00
John Ericson
7c82213813 Merge branch 'path-info' into ca-drv-exotic 2023-01-14 17:09:58 -05:00