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116 commits

Author SHA1 Message Date
Robert Hensing 729225e355 treewide: lib.isInOldestRelease -> lib.oldestSupportedReleaseIsAtLeast 2024-10-08 11:14:24 +02:00
Someone Serge 98384afab5 lib: add getStatic 2024-07-21 11:38:04 +00:00
Someone Serge 76db6ba81a lib: reflect effective signatures of getOutput functions 2024-07-21 11:37:38 +00:00
Someone Serge 744305bce4 lib: add getOutput', a nix-lang counterpart of _overrideFirst 2024-07-21 11:29:23 +00:00
Silvan Mosberger 56535c832f lib.intersectAttrs: Export from builtins 2024-06-20 17:59:36 +02:00
Gabriel Volpe fe2bead78b
lib/attrsets: introduce mapCartesianProduct 2024-04-15 19:16:15 +02:00
Gabriel Volpe 228621e42d
lib/attrsets: rename cartesianProductOfSets to cartesianProduct 2024-04-15 19:03:54 +02:00
Tharun Thennarasu 5bcb08ea03
lib.hasAttrByPath: fix typo (#302042) 2024-04-06 11:24:44 +02:00
Daniel Sidhion d784fc138d Apply suggestions from code review 2024-03-19 18:03:31 -07:00
Johannes Kirschbauer 56b5634a90
doc: manual fixup after migration 2024-03-19 22:01:38 +01:00
Johannes Kirschbauer f917ed536b
doc: migrate lib.attrsets to use doc-comments 2024-03-15 17:18:35 +01:00
Silvan Mosberger 012faf046f
Merge pull request #292941 from adisbladis/lib-getattrfrompath-env 
lib.getAttrFromPath: Don't use errorMessage variable
 2024-03-06 19:41:34 +01:00
Silvan Mosberger 2dc95cded0
Merge pull request #292938 from adisbladis/mapattrsrecursivecond-env 
lib.mapAttrsRecursiveCond: Eliminate intermediate one intermediate variable environment
 2024-03-06 19:40:52 +01:00
Silvan Mosberger b180a6af30
Merge pull request #292937 from adisbladis/zipattrs-env 
lib.zipAttrs: Remove needless function wrapping
 2024-03-06 19:39:48 +01:00
Silvan Mosberger 0d49917ded
Merge pull request #292934 from adisbladis/lib-choosedevoutput 
lib.chooseDevOutputs: Remove needless function wrapping
 2024-03-06 19:39:30 +01:00
Valentin Gagarin 73c0b48dd6
doc: add details on mapAttrsRecursive[Cond] (#293509) 
* doc: add details on `mapAttrsRecursive[Cond]`

from first reading it wasn't clear that `f` also takes the current
attribute path. also the value f receives is tricky due to how the
condition is evaluated.

Co-authored-by: Daniel Sidhion <DanielSidhion@users.noreply.github.com>
 2024-03-06 10:21:23 +01:00
adisbladis 948e5b841d lib.getAttrFromPath: Don't use errorMessage variable 
We can just pass the error message on without creating an environment.
 2024-03-03 16:30:00 +13:00
adisbladis 34fefe4e16 lib.mapAttrsRecursiveCond: Eliminate intermediate one intermediate variable environment 2024-03-03 16:18:38 +13:00
adisbladis 4338bfde09 lib.zipAttrs: Remove needless function wrapping 
Returning the partially applied `zipAttrsWith fn` is the same as `sets: zipAttrsWith fn sets`.
 2024-03-03 16:17:49 +13:00
adisbladis 3ee9d185f3 lib.chooseDevOutputs: Remove needless function wrapping 
Returning the partially applied `map getDev` is the same as `drvs: map getDev drvs`.
 2024-03-03 16:03:01 +13:00
Silvan Mosberger 31d23ba418 lib.attrsets: Remove unneeded polyfills 
Nix 2.3 (the minimum version needed to evaluate Nixpkgs) supports these, so no need to keep them around.
 2024-02-09 05:46:03 +01:00
Alois Wohlschlager d33127863e
lib: make deprecation warnings consistent 
The deprecation warnings in lib were wildly inconsistent. Different
formulations were used in different places for the same meaning. Some warnings
used builtins.trace instead of lib.warn, which prevents silencing; one even
only had a comment instead. Make everything more uniform.
 2024-02-03 19:01:39 +01:00
Robert Hensing a7aa95db53 lib/attrsets: Document and link Nix language operators 2023-12-13 18:38:41 +01:00
Robert Hensing 7d993b9521 lib.attrsets.hasAttrByPath: Document law and laziness, and test it 2023-12-08 23:19:09 +01:00
Robert Hensing 72bd4bbb58 lib.attrsets.longestValidPathPrefix: init 
Allows finding the most specific path that exists.
This is useful for error messages relating to attribute paths.
 2023-12-08 23:15:13 +01:00
Robert Hensing 51357572f2
Merge pull request #269552 from adisbladis/lib-matchattrs-list-allocs 
lib.attrsets.matchAttrs: Avoid some list allocations when walking structure
 2023-11-27 14:44:37 +01:00
adisbladis 544a1d375b lib.attrsets.attrByPath: Don't allocate one extra list per lookup recursion 
Using `tail` in a recursive loop like this needlessly allocates.
This changes the loop to look up by list index instead.
 2023-11-27 11:37:57 +13:00
adisbladis 7e07b3ecd5 lib.attrsets.hasAttrByPath: Don't allocate one extra list per lookup recursion 
Using `tail` in a recursive loop like this needlessly allocates.
This changes the loop to look up by list index instead.
 2023-11-27 11:37:56 +13:00
adisbladis 013a0a1357 lib.attrsets.matchAttrs: Avoid some list allocations when walking structure 
Benchmarks (`nix-instantiate ./. -A python3`):

- Before:
``` json
{
  "cpuTime": 0.29049500823020935,
  "envs": {
    "bytes": 4484216,
    "elements": 221443,
    "number": 169542
  },
  "gc": {
    "heapSize": 402915328,
    "totalBytes": 53086800
  },
  "list": {
    "bytes": 749424,
    "concats": 4242,
    "elements": 93678
  },
  "nrAvoided": 253991,
  "nrFunctionCalls": 149848,
  "nrLookups": 49612,
  "nrOpUpdateValuesCopied": 1587837,
  "nrOpUpdates": 10104,
  "nrPrimOpCalls": 130356,
  "nrThunks": 358981,
  "sets": {
    "bytes": 30423600,
    "elements": 1859999,
    "number": 41476
  },
  "sizes": {
    "Attr": 16,
    "Bindings": 16,
    "Env": 16,
    "Value": 24
  },
  "symbols": {
    "bytes": 236145,
    "number": 24453
  },
  "values": {
    "bytes": 10502520,
    "number": 437605
  }
}
```

- After:
``` json
{
  "cpuTime": 0.2946169972419739,
  "envs": {
    "bytes": 3315224,
    "elements": 172735,
    "number": 120834
  },
  "gc": {
    "heapSize": 402915328,
    "totalBytes": 48718432
  },
  "list": {
    "bytes": 347568,
    "concats": 4242,
    "elements": 43446
  },
  "nrAvoided": 173252,
  "nrFunctionCalls": 101140,
  "nrLookups": 73595,
  "nrOpUpdateValuesCopied": 1587837,
  "nrOpUpdates": 10104,
  "nrPrimOpCalls": 83067,
  "nrThunks": 304216,
  "sets": {
    "bytes": 29704096,
    "elements": 1831673,
    "number": 24833
  },
  "sizes": {
    "Attr": 16,
    "Bindings": 16,
    "Env": 16,
    "Value": 24
  },
  "symbols": {
    "bytes": 236145,
    "number": 24453
  },
  "values": {
    "bytes": 8961552,
    "number": 373398
  }
}
```
 2023-11-27 11:20:50 +13:00
Silvan Mosberger 055ba65fed lib: Take advantage of section descriptions 
See https://github.com/nix-community/nixdoc/releases/tag/v2.6.0
 2023-11-20 03:02:11 +01:00
Silvan Mosberger 5323fbf703
Merge pull request #254452 from flyingcircusio/lib-attrsToList 
lib.attrsets.attrsToList: add function
 2023-10-10 19:49:17 +02:00
Oliver Schmidt d70633f91c lib.attrsets.attrsToList: add function 
For transforming back between lists and attrsets, it makes sense to have
a quasi-inverse of `builtins.listToAttrs` available as a library
function.

Co-authored-by: Silvan Mosberger <github@infinisil.com>
Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
 2023-10-10 16:11:01 +02:00
Silvan Mosberger dd72ff27f7 lib.attrsets.foldlAttrs: Make stricter 
See the parent commit for the same change to lib.lists.foldl'
 2023-09-27 02:43:59 +02:00
Silvan Mosberger 3b6169f87b lib.lists.foldl': Make strict in the initial accumulator 
To maintain backwards compatibility, this can't be changed in the Nix language.
We can however ensure that the version Nixpkgs has the more intuitive behavior.
 2023-09-27 02:43:59 +02:00
Silvan Mosberger fa503f4b92 lib.attrsets.mergeAttrsList: init 
Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
 2023-07-18 20:27:15 +02:00
figsoda 12e01c677c lib/attrsets: remove unused let bindings 2023-06-23 09:41:04 +00:00
Robert Hensing 5319ddf7dc lib.concatMapAttrs: Simplify stack trace 2023-05-31 14:57:37 +02:00
zimbatm ad0b21fbbc
lib: add missing removeAttrs builtin 
I'm expecting all the builtins.* functions to be available in lib.*
 2023-04-19 21:27:38 +02:00
hsjobeki 15a8d05ba5 init: lib.foldlAttrs 
- provide comprehensive example
- add unit test
 2023-03-11 10:42:00 +01:00
Colin Arnott 6ff66fcbd7
lib: standardise attrset type syntax 
There are a number of different syntaxes used for attrset type
signatures in our doc strings, this change standardises upon one that
uses :: for specifying attribute type, and ; terminators to be
consistent with nix syntax. There are no bugs in the functions
themselves, just that different syntaxes may confuse new users.
 2023-01-30 23:53:44 +00:00
Adam Joseph a4e3e16258
Update lib/attrsets.nix 
Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
 2023-01-25 02:52:54 +00:00
Adam Joseph ee00af7a32 attrsets: clarify that mapAttrs maps over *leaf* attrs 2023-01-22 15:19:09 -08:00
YoshiRulz 7fba83890c
lib: Fix mismatched quotes in lib.* doc comments 
caused problems for automated rich text generation such as
https://teu5us.github.io/nix-lib.html#customisation-functions
 2023-01-02 08:25:17 +10:00
hsjobeki 5ff21bfc73 attrsets: fix and add some doc types 2022-12-24 14:08:11 +01:00
figsoda 695d4bc76b lib: fix typos 2022-12-17 18:59:29 -05:00
Ryan Mulligan ac1ae0a58e doc: auto-generate asserts and attrset library docs 
If all the docs are auto-generated, it should be easier to convert
them to Commonmark.

Co-Authored-By: Valentin Gagarin <valentin.gagarin@tweag.io>
Co-Authored-By: Silvan Mosberger <contact@infinisil.com>
 2022-12-08 22:58:22 +01:00
figsoda f993f8a186 lib/attrsets: add concatMapAttrs 2022-11-17 10:41:53 -05:00
figsoda 4536ebad69 lib/attrsets: simplify chooseDevOutputs 2022-11-17 09:41:47 -05:00
Adam Joseph 037cf2fad1 unionOfDisjoint: use builtins.intersectAttrs 
This brings two benefits:

1. The complete list of collisions is printed in the whenever any colliding
   attribute is accessed.

2. The sets are intersected using a C++ primitive, which runs in O(n) time
   (intersecting pre-sorted lists) with small constants rather than interpreted
   Nix code.

Thanks to @toonn for prompting this improvement.
 2022-09-25 00:09:15 -07:00
Adam Joseph 99da193877 note that unionOfDisjoint is commutative, unlike // 2022-09-12 12:59:16 -07:00