This repository has been archived by the owner on Jan 20, 2023. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 1
/
meta.nix
584 lines (534 loc) · 25.6 KB
/
meta.nix
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
# ============================================================================ #
{ lib, config ? {}, ... } @ globalAttrs: let
# ---------------------------------------------------------------------------- #
# Metadata must be "flat" plain old data.
# No derivations, no store paths, no string contexts.
# If you want any of those things, scroll down and use `passthru'.
#
# Metadata fields should not need to be "recomputed" once retrieved, and
# need to be able to write to/from JSON to be saved on disk.
# Derivations cannot be serialized, except in the Nix store;
# similarly Store Paths cannot be read from a regular file or from JSON,
# because Nix has no way of determining which derivation produced the path.
# This is why the separation between `passthru' and `meta' exists.
#
# NOTE: It is fine to "fill metadata" fields from things like a REGISTERED
# `package.json' or `packument' file ( NOT a local tree/git checkout! ), but
# you need to be absolutely positive that this metadata will never change for
# this package version, and in theory you should be able to carve this in
# stone on disk as `read-only' forever and always.
# If you do so, be sure to run `builtins.unsafeRemoveStringContext' so Nix
# knows "no seriously this data is not ever going to change" so that it can
# be dynamically repacked into a regular string.
#
# XXX: For a local tree, you shouldn't record that metadata to disk, because
# presumably whatever version number is in your `package.json' isn't "real".
# You could add some ridiculous hash to ensure you don't write "bad"
# metadata, OR you can let Nix do that for you - all you do it
# "don't call `builtins.unsafeRemoveStringContext'".
# Yep, that's it, pretty easy.
# No need to generate a unique hash for your source tree, because y'know,
# that's that thing that Nix does all the time for every file using
# string contexts.
# This giant block about "meta" is really aiming to tell you "meta" is the
# exception to Nix's tracking, so we treat it with exceptional caution.
#
# These functions never call `builtins.unsafeDiscardStringConext' - and this
# is intentional ( and I know it seems inconvenient ).
# This is because we NEED the user to take responsibility for explicitly
# deciding when contexts should be stripped, so that we can use `meta' tags
# in "impure" builds without poisoning the cache.
# ---------------------------------------------------------------------------- #
# `__serial' is a functor attached to attrsets which produces a reduced
# attrset of fields which may be written to disk.
# This functor is recursive by default, so any fields which are attrsets and
# have their own `__serial' function will be respected recursively.
# The use case here is largely for stashing values which were realized through
# impure operations or "import from derivation" routines, which we want to
# purify in later builds.
#
# For example, we may as an optimization lookup the `narHash' of fetched
# tarballs to allow us to use `builtins.fetchTree' in pure evaluation mode in
# later runs.
# Alternatively we may query an NPM registry to look up package information
# that we want to save for later runs to avoid running those queries again.
#
# `__serial' functions are written with the intention of being used with
# "recursive attrsets", such as those seen in overlays and fixed-points.
# With that in mind they are always written to accept the argument `self' -
# with the single exception of `serialIgnore' which accepts no argument and
# is simply the boolean value `false' ( indicating that this attrset should
# be ignored entirely - this is done to distinguish from the literal value
# false, and is a slight optimization over `serialDrop' which requires
# string comparison ).
#
# I expect that in many cases you will want to write your own implementation
# of `__serial' to suit your use case; but a sane default implementation may
# be found below and used as a jumping off point for your own custom routine.
# Please remember our rules for serializing data in Nix though:
# 1. Serialized data must be readable and writable by `(to|from)JSON' -
# this means only attrsets, strings, booleans, lists, floats, and
# integers may be written.
# 2. Store paths must not appear in strings - this means derivations may
# not be serialized because both their inputs and `outPath' fields
# contain Nix store paths.
# 3. Fields with the name `__serial', `__extend', and `passthru' should
# never be written, and in general you should treat any field beginning
# with "__" as hidden by default.
# You may have cases where you actually do want to write "__" prefixed
# fields, but you are expected to explicitly whitelist those in a custom
# `__serial' implementation.
# 4. The string value "__DROP__" is reserved and should not be written.
# This allows recursive `__serial' functions to dynamically hide fields.
# 5. You should always respect the `serialIgnore' pattern for recursive
# `__serial' functions.
# This simply means ignoring `v ? __serial && v.__serial == serialIgnore'
# attrset values in an object ( see `serialDefault' `keepAttrs' ).
extInfoExtras = [
"__update" "__add" "__extend" "__serial" "__entries" "__unfix__"
"__updateEx" "__extendEx" "__new" "__thunkWith" "__thunksWith"
];
# The simplest type of serializer.
serialAsIs = self: removeAttrs self ( extInfoExtras ++ ["passthru"] );
# Do not serialize attrsets with this serializer, you must explicitly check
# for this reserved serializer.
# See notes in section above.
serialIgnore = false;
# A second type of reserved serializer which allows recursive `__serialize'
# routines to dynamically hide members.
# See notes in section above.
serialDrop = self: "__DROP__";
# A sane default serializer.
# Use this as a model for your implementations.
serialDefault = self: let
keepF = k: v: let
inherit (builtins) isAttrs isString typeOf elem;
keepType = elem ( typeOf v ) ["set" "string" "bool" "list" "int" "float"];
keepAttrs =
if v ? __serial then v.__serial != serialIgnore else
( ! lib.isDerivation v );
keepStr = ! lib.hasPrefix "/nix/store/" v;
keepT =
if isAttrs v then keepAttrs else
if isString v then keepStr else keepType;
keepKey = ! lib.hasPrefix "__" k;
in keepKey && keepT;
keeps = lib.filterAttrs keepF ( serialAsIs self );
serializeF = k: v: let
fromSerial =
if builtins.isFunction v.__serial then v.__serial v else v.__serial;
fromAttrs = if v ? __serial then fromSerial else
if v ? __toString then toString v else
serialDefault v;
in if builtins.isAttrs v then fromAttrs else v;
serialized = builtins.mapAttrs serializeF keeps;
in lib.filterAttrs ( _: v: v != "__DROP__" ) serialized;
# ---------------------------------------------------------------------------- #
# Coerce arg to be a recursive attrset.
# Arg must be either a recursive or non-recursive attrset.
asRecur = x: if builtins.isFunction x then x else
assert builtins.isAttrs x;
( self: x );
# ---------------------------------------------------------------------------- #
# Make an extensible attrset with functors `__extend', `__entries', and
# `__serial', etc which are intended to create a common interface for handling
# various sorts of package info.
# This is based on Nixpkgs' `makeScope' pattern, which is essentially just a
# fancy fixed point attrset with a set of "OOP-ish" member functions.
# We use the pattern for a different purpose, but eagle eyed readers might
# already see how this object could be used for scope splicing.
#
# `__extend` allow you to apply overlays to add new fields in a fixed point,
# and is identical to the `nixpkgs.lib.extends' "overlay" function.
#
# `__entries' scrubs any "non-entry" fields which is useful for mapping over
# "real" entries to avoid processing meta fields.
# You may pass in your own definition to hide additional fields; when doing so
# I strongly recommend using `extInfoExtras' as a base list of fields to
# always exclude.
#
# `__serial' scrubs any entries or fields of those entries which should not
# be written to disk in the even that entries are serialized with a function
# such as `toJSON' - it is recommended that you replace the default
# implementation for this functor in most cases.
#
# `__update' may be used to add/set attributes to the attrset.
# The argument to `__update' may be a regular attrset, or a recursively
# defined attrset.
#
# `__add' is similar to `__update' except it will not overwrite defined fields,
# this is useful for bulk adding info while avoiding redundancy in evals.
#
# `__thunkWith' passes fields from our attrset as arguments to a function
# which accepts an attrset of named fields as its argument.
# This is literally just `callPackageWith' and is provided for convenience,
# this does not modify our attrset in any way.
# The argument to `__thunkWith' must be a function which accepts an attrset as
# its argument.
# The result will be a "thunk" which holds unapplied args and the orginal
# function as fields in an attrset.
# The function will be applied when an additional attrset of arguments is
# given; the entries of the `metaExt' will be updated with these args, and
# applied to the stashed function.
# The resulting return value will be extended with the fields `override' and
# maybe `overrideDerivation' ( for derivations only ) which allow users to
# re-evaluate the thunk with modified args.
# I strongly suggest reading the Nixpkgs' manual about "overrides" and
# `callPackage[s][With]' for more info.
#
# `__thunksWith' is just an alias for `callPackagesWith'.
# This one should be used on "functions that return functions/drvs".
# The arg to `__thunksWith' must be a function which takes a single attrset as
# as arg which returns an attrset of functions.
# The difference is the `override*' fields are added to members of the
# returned attrset rather than the return value itself.
# This is likely what you want to use on a file full of helper routines; for
# example you would evaluate THIS file ( `meta.nix' ) as:
# ( mkExtInfo' {} {
# inherit ( import <nixpkgs> {} ) lib;
# } ).__thunksWith ./meta.nix {}
# NOTE: this example is just to show the usage; but because this file only
# takes a single arg this example is pretty contrived.
#
# `__unfix__' holds the original argument `info' as a recursively defined
# attrset ( see `infoR' definition ) which is useful for "deep" overrides.
# It's unlikely that you'll ever use this yourself, but it's a life saver
# for deeply nested/complex overrides - so it's here as an escape hatch.
# For clarity, this exists so that you can reorder or "unapply" overlays.
# As an example imagine that you have a "pipeline" of ( uncomposed ) overlays
# that are applied by a routine, and lets say the user wants to replace one of
# those overlays with an alternative implementation; they're going to
# accomplish this by doing `( myExt.__new myExt.__unfix__ ).__extend ov' to
# "undo" the last overlay, and apply an alternative.
# TRIVIA: In early versions of Nixpkgs a stack of overlays was stashed so you
# could push/pop and insert overlays in a similar fashion ( this was
# deprecated later in favor of modules ).
#
# `__updateEx' recreates our attrset providing the opportunity to add
# additional "extra" fields.
#
# `__new' allows `mkExtInfo'' to be used as a "base class" for creating
# other types of extensible attrsets based on the same interface.
# You can think of this like the "constructor".
#
# `extra' fields are simply functors, which will be regenerated any time
# the attrset is modified.
# You are welcome to override these, but pay attention to the application of
# `self', and how this differs slightly from the default values defined
# below ( `extra' functors must accept `self' as their first argument ).
mkExtInfo' = {
__serial ? serialDefault
, __entries ? self:
removeAttrs self ( extInfoExtras ++ ( builtins.attrNames extra ) )
, ...
} @ extra: info: let
infoR = asRecur info;
self = ( infoR self ) // ( {
__update = info': self.__new ( self // info' );
__add = info': self.__new ( info' // self );
__extend = g: self.__new ( lib.fixedPoints.extends g self.__unfix__ );
__serial = __serial self;
__entries = __entries self;
__unfix__ = infoR;
__updateEx = extra': mkExtInfo' ( extra // extra' ) self;
__extendEx = extraR: mkExtInfo' ( extraR extra ) self;
__new = mkExtInfo' extra;
__thunkWith = lib.callPackageWith self.__entries;
# Use this for functions which return other functions or drvs.
# It yields a `callPackages' equivalent.
__thunksWith = lib.callPackagesWith self.__entries;
} // ( builtins.mapAttrs ( _: fn: fn self ) extra ) );
in self;
mkExtInfo = mkExtInfo' {};
# ---------------------------------------------------------------------------- #
# FIXME: make `entFromType' use this to type-check in `metaEntCore'.
metaEntryFromTypes = [
"package.json"
"package-lock.json" # Detect version
"package-lock.json(v1)"
"package-lock.json(v2)"
"yarn.lock" # Detect version
"yarn.lock(v1)"
"yarn.lock(v2)"
"yarn.lock(v3)"
"manifest"
"packument"
"raw" # Fallback/Default for manual entries
];
# ---------------------------------------------------------------------------- #
# Hide values which can be easily inferred from `package-lock.json(v2)' entry.
# For example we know the entry must declare `hasInstallScript' so we can
# safely omit it.
metaEntPl2Serial = self: let
# Start with the default serializer's output.
dft = metaEntSerialDefault self;
# Drop values which are assumed to be false when unspecified.
hide = removeAttrs dft [
"hasBin"
"hasBuild"
"hasInstallScript"
"gypfile"
];
keepTrue = lib.filterAttrs ( _: x: x == true ) {
inherit (self) hasBin hasBuild hasPrepare;
};
inst' = ( lib.optionalAttrs ( self.hasInstallScript or false ) {
inherit (self) hasInstallScript;
} // ( lib.optionalAttrs ( self ? gypfile ) {
inherit (self) gypfile;
} ) );
in assert self.entryFromType == "package-lock.json(v2)";
hide // keepTrue // inst';
# ---------------------------------------------------------------------------- #
metaEntSerialDefault = self: removeAttrs ( serialDefault self ) [
"_type" "__pscope"
];
# Maps `entFromType' to default serializers.
# Largely these hide additional fields which can be easily inferred using
# `entFromType`.
metaEntSerialsByFromType = {
"package-lock.json(v2)" = metaEntPl2Serial;
_default = metaEntSerialDefault;
};
metaEntSerial = self:
metaEntSerialByType.${self.entryFromType} or metaEntSerialByType._default;
# ---------------------------------------------------------------------------- #
# Add metadata related to output names and other misc name info.
# NOTE: This is also available as a non-recursive "flat" addition below as
# `metaEntNames' as a slight optimization at the expense of treating names
# as "static", this also has the advantage of avoiding any accidental
# recursion headaches with later extensions.
metaEntExtendWithNames = final: prev: {
scoped = ( builtins.substring 0 1 prev.ident ) == "@";
names = {
__serial = false;
bname = baseNameOf prev.ident;
scopeDir = if final.scoped then "${dirOf prev.ident}/" else "";
node2nix =
( if final.scoped then "_at_${final.names.scope}_slash_" else "" ) +
"${final.names.bname}-${prev.version}";
registryTarball = "${final.names.bname}-${prev.version}.tgz";
localTarball =
( if final.scoped then "${final.names.scope}-" else "" ) +
final.names.registryTarball;
genName = cat: "${final.names.bname}-${cat}-${prev.version}";
tarball = final.names.registryTarball;
src = "${final.names.bname}-source-${prev.version}";
built = "${final.names.bname}-built-${prev.version}";
installed = "${final.names.bname}-inst-${prev.version}";
prepared = "${final.names.bname}-prep-${prev.version}";
bin = "${final.names.bname}-bin-${prev.version}";
module = "${final.names.bname}-module-${prev.version}";
global = "${final.names.bname}-${prev.version}";
} // ( lib.optionalAttrs final.scoped {
scope = lib.yank "@([^/]+)/.*" prev.ident;
} );
};
# Exactly the same as the above function but non-recursive.
# This form is slightly faster but names must be modified manually.
# NOTE: This was largely added to avoid a specific instance of infinite
# recursion that crops up when attempting merge packages which use aliases
# such as `npm:<IDENT>'; the recursive form is still far more flexible though.
metaEntNames = { ident, version, ... } @ me: let
scoped = ( builtins.substring 0 1 ident ) == "@";
names = {
__serial = false;
bname = baseNameOf ident;
scopeDir = if scoped then "${dirOf ident}/" else "";
node2nix =
( if scoped then "_at_${names.scope}_slash_" else "" ) +
"${names.bname}-${version}";
registryTarball = "${names.bname}-${version}.tgz";
localTarball =
( if scoped then "${names.scope}-" else "" ) + names.registryTarball;
genName = cat: "${names.bname}-${cat}-${version}";
tarball = names.registryTarball;
src = "${names.bname}-source-${version}";
built = "${names.bname}-built-${version}";
installed = "${names.bname}-inst-${version}";
prepared = "${names.bname}-prep-${version}";
bin = "${names.bname}-bin-${version}";
module = "${names.bname}-module-${version}";
global = "${names.bname}-${version}";
} // ( lib.optionalAttrs scoped { scope = lib.yank "@([^/]+)/.*" ident; } );
in { inherit scope names; };
# ---------------------------------------------------------------------------- #
# Extensible core `meta' info for Node.js packages.
# This aims to gather and organize information from various sources such as
# `package.json' files, lockfiles, registry info, etc into a common object
# that builders can refer to.
# The intention here is to convert from `pkg spec -> meta -> derivation'
# so that each builder doesn't have to include their own
# `pkg spec -> derivation' routines, since these would quickly become a mess.
#
# By default this demands that the package `ident' ( "name" ) and version
# are provided, and it will add verious derivation names so that they may be
# consistent across various types of builders.
mkMetaEntCore = {
key ? args.ident + "/" + args.version
, ident ? dirOf args.key
, version ? baseNameOf args.key
, entFromType ? "raw"
} @ args: mkExtInfo' {
__serial = metaEntSerial;
# Ignore extra fields, and similar to `__serial' recur `__entries' calls.
__entries = self: let
scrub = removeAttrs self ( extInfoExtras ++ [
"_type" "__pscope"
] );
subEnts = _: v: if ( v ? __entries ) then v.__entries else v;
in builtins.mapAttrs subEnts scrub;
} {
_type = "metaEnt";
inherit key ident version entFromType;
# We don't hard code this in the serializer in case the user actually does
# want to serialize their `entries', allowing them the ability to override.
entries.__serial = false;
};
# A sane default constructor for creating a package entry.
# We leave a few configurables available in this form that we hide for the
# more common `mkMetaEnt' function.
mkMetaEnt' = {
recNames ? false # Add `names' by extension allowing easy renaming later
, ...
} @ opts: members: let
core = mkMetaEntCore members;
# Add `names' either as a flat field or recursively.
withNames = if recNames then core.__extend metaEntExtendWithNames else
core.__add ( metaEntNames core );
in withNames;
mkMetaEnt = mkMetaEnt {};
# ---------------------------------------------------------------------------- #
# Convert package "keys" ( "@foo/bar/1.0.0" ) to attrsets as:
# foo = { bar = { v1_0_0 = { ... }; }; };
# Keys are grouped by scope, name, and the final version field holds the
# original keys' values.
# XXX: Please do not use this in any routines; it was written exclusively for
# convenience when `nix repl' is being used to avoid having to quote fields
# and allow <TAB> autocompletion to behave as expected.
unkeyAttrs = __entriesFn: self: let
inherit (builtins) groupBy attrValues mapAttrs replaceStrings head;
mapVals = fn: mapAttrs ( _: fn );
getScope = x: x.scope or x.names.scope or x.meta.names.scope or "_";
gs = groupBy getScope ( attrValues ( __entriesFn self ) );
getPname = x: baseNameOf x.ident;
is = mapVals ( groupBy getPname ) gs;
getVers = x: "v${replaceStrings ["." "+"] ["_" "_"] x.version}";
vs = mapVals ( mapVals ( ids: mapVals head ( groupBy getVers ids ) ) ) is;
in vs;
# ---------------------------------------------------------------------------- #
# Represents a collection of `metaEnt' attrs which organizes entries by "key".
# This carries some additional helper functors aimed at making it easy to
# operate on entries within the set.
# The purpose of this attrset is largely to allow references between entries
# in a way that respects "self reference" at multiple scopes.
# With that in mind, always remember that you're in the danger zone here -
# you are operating on a recursive attrset which contains large numbers of
# recursive attrsets ( which may themselves contains recursive attrsets ).
# This level of nested self reference is a practical necessity for organizing
# package sets with complex topo-sorts; but do your best to keep it simple.
# XXX: I've shot my foot off more than a few times "getting fancy" with
# deep recursion, and it has a way of getting out of hand quickly when you try
# to compose overlays in ways where "order starts to matter".
# So seriously, be sure you are organizing your compositions carefully, test
# often, use your REPL, and godspeed!
mkMetaSet = members: let
# Make `members' recursive if it isn't, and add some core fields.
# FIXME: There's a less repetitive way to write `membersR' but I'm not in
# the mood right now.
membersR = let
# Non-recursive case
membersRFromAS = final: members // {
__meta = ( members.__meta or {} ) // { __serial = false; };
_type = "metaSet";
};
# `members' is already recursively defined so we must extend.
membersRFromFn = let
addMeta = final: prev: {
__meta = ( prev.__meta or {} ) // { __serial = false; };
_type = "metaSet";
};
in lib.fixedPoints.extends addMeta members;
in if builtins.isFunction members then membersRFromFn else
assert builtins.isAttrs members;
membersRFromFn;
extras = let
__entries = self: removeAttrs self ( extInfoExtras ++ [
"__meta" "__pscope" "__unkey" "__mapEnts" "_type"
] );
in {
__serial = self: removeAttrs ( serialDefault self ) ["_type" "__pscope"];
inherit __entries;
# We need to avoid infinite recursion with `__new', so we don't call
# `mkMetaSet' directly here.
__new = self: lib.libmeta.mkExtInfo' extras;
# Converts keys to groups of attrs with no special characters.
# XXX: Really just for REPL usage. Do not use this in routines.
# FIXME: possible hide this behind a conditional for REPL only.
__unkey = unkeyAttrs __entries;
# Apply a function to all entries.
__mapEnts = fn: self.__new ( builtins.mapAttrs fn self.__entries );
# Apply function to entry if it exists, otherwise do nothing.
# This may seem superfulous but in practice this is an incredibly common
# pattern when trying to override meta-data.
__maybeApplyEnt = fn: field:
if ! ( self.__entries ? ${field} ) then self else
self.__update { ${field} = fn self.${field}; };
};
in lib.libmeta.mkExtInfo' extras membersR;
# ---------------------------------------------------------------------------- #
# Determines if a package needs any `nodeModulesDir[-dev]' fields.
# If `hasBuild' is not yet set, we will err on the safe side and assume it
# has a build.
# XXX: It is strongly recommended that you provide a `hasBuild' field.
metaEntIsSimple = {
hasBuild ? true
, hasInstallScript ? false
, hasPrepare ? false
, hasBin ? false
, ...
} @ attrs: ! ( hasBuild || hasInstallScript || hasPrepare || hasBin );
metaSetPartitionSimple = mset: let
lst = builtins.attrValues mset.__entries;
parted = builtins.partition metaEntIsSimple lst;
in {
simple = parted.right;
needsModules = parted.wrong;
};
# ---------------------------------------------------------------------------- #
in {
# Base Serializers
inherit
serialAsIs
serialIgnore
serialDrop
serialDefault
;
# Base ExtInfo
inherit
mkExtInfo'
mkExtInfo
;
# Meta Entries
inherit
metaEntryFromTypes
metaEntSerialDefault
metaEntSerial
metaEntExtenWithNames
metaEntNames
mkMetaEntCore
mkMetaEnt'
mkMetaEnt
metaEntIsSimple
;
# Meta Sets
inherit
mkMetaSet
metaSetPartitionSimple # by `metaEntIsSimple'
;
# Utils and Misc
inherit
unkeyAttrs
extInfoExtras
;
}