Commit Graph

275 Commits

Author SHA1 Message Date
Robert Hensing
29c7665003 lib.modules.doRename: Add condition parameter
This is to support single-to-multi service migrations, so that the
`to` (e.g. `foos.""`) isn't defined unconditionally. See test cases.
2024-02-02 07:31:16 +01:00
Robert Hensing
afb1a2e376 lib/modules: Test optionless module errors from #131205 2023-12-09 14:15:49 +01:00
Robert Hensing
00e5487906
Merge pull request #249243 from lf-/jade/declarationsWithLocations
nixos/modules: Add declarationPositions
2023-09-17 19:43:07 +02:00
Jade Lovelace
a1d3882307 nixos/modules: Add declarationPositions
What it does: line and column level *declaration* position information:

$ nix repl .
nix-repl> :p nixosConfigurations.micro.options.environment.systemPackages.declarationPositions
[ { column = 7; file = "/nix/store/24aj3k7fgqv3ly7qkbf98qvphasrw9nb-source/nixos/modules/config/system-path.nix"; line = 63; } ]

Use cases:
- ctags over NixOS options, as will be presented at NixCon 2023 ;)
- improving the documentation pages to go to the exact line of the
  declarations.

Related work:
- https://github.com/NixOS/nixpkgs/pull/65024

  This one does it for all *definitions* rather than declarations, and
  it was not followed through with due to performance worries.
- https://github.com/NixOS/nixpkgs/pull/208173

  The basis for this change. This change is just a rebase of that one.
  I split it out to add the capability before adding users of it, in
  order to simplify review. However, the ctags script in there is a
  sample user of this feature.

Benchmarks: conducted by evaluating my own reasonably complex NixOS
configuration with the command:
`hyperfine -S none -w 1 -- "nix eval .#nixosConfigurations.snowflake.config.system.build.toplevel.outPath"`

```
Benchmark 1: nix eval .#nixosConfigurations.snowflake.config.system.build.toplevel.outPath
  Time (mean ± σ):      8.971 s ±  0.254 s    [User: 5.872 s, System: 1.388 s]
  Range (min … max):    8.574 s …  9.327 s    10 runs

Benchmark 1: nix eval .#nixosConfigurations.snowflake.config.system.build.toplevel.outPath
  Time (mean ± σ):      8.766 s ±  0.160 s    [User: 5.873 s, System: 1.346 s]
  Range (min … max):    8.496 s …  9.033 s    10 runs
```

Summary of results: it seems to be in the noise, this does not cause any
visible regression in times.
2023-09-08 11:48:40 +02:00
Robert Hensing
5ad01f1b6f lib/modules: Report a better error when option tree has bare type
Improves on 0d472a6201
- https://github.com/NixOS/nixpkgs/pull/242339

We actually do have the file name.

Thanks Shawn8901 for the [feedback]!

feedback: https://github.com/NixOS/nixpkgs/pull/242339#issuecomment-1683107055
2023-08-18 11:36:51 +02:00
Robert Hensing
0d472a6201 lib/modules: Report a good error when option tree has bare type
Note that this removes the possibility of declaring an option
named `_type`.
2023-08-14 10:44:56 +02:00
Robert Hensing
19f1d7da06
Merge pull request #245271 from sternenseemann/module-system-merge-no-type
lib/modules: handle typeless options in mergeModules
2023-07-27 10:55:08 +02:00
sternenseemann
9c35f44999 lib/modules: handle typeless options in mergeModules
mkOption does not require a `type` argument and does not set the
resulting attribute if it is not given. Consequently, we need to be
prepared to merge options that have no type information.
2023-07-26 23:58:04 +02:00
Robert Hensing
8014460c4d lib.mergeModules: Add context to error message 2023-07-11 13:03:52 +02:00
Robert Hensing
8f700580b9 lib/modules.nix: Format 2023-07-11 13:03:52 +02:00
Robert Hensing
4dd51a9ace lib/modules.nix: Inline single-use subtree bindings 2023-07-11 12:33:41 +02:00
Robert Hensing
6acc3114c3 lib/modules.nix: Make entire definition list strict in config check
This is a non-trivial refactor that slightly changes the semantics
of the internal definition lists.
Whereas previously only individual list items would trigger the exception,
now the error is promoted to the whole list.
This is mostly ok, because we compute the value, it is wrong to ignore a definition.
However, we don't always compute the value. For instance `readOnly`
only needs to count definitions. That won't be possible anymore when
the error is raised for one of the items. As a consequence, an error
will be raised for the errant definition instead of the number of
definitions.
2023-07-11 12:22:58 +02:00
Robert Hensing
c28dd7d921 lib/modules.nix: Rename defnsByName -> pushedDownDefinitionsByName 2023-07-11 12:22:58 +02:00
Robert Hensing
448b153f81 lib/modules.nix: Rename defnsByName' -> rawDefinitionsByName 2023-07-11 12:22:58 +02:00
Robert Hensing
fb988c6193 lib/modules.nix: Apply argument module of old f 2023-07-11 12:22:57 +02:00
Robert Hensing
eb410eab82 lib/modules.nix: Apply argument modules of old old old byName 2023-07-11 12:22:57 +02:00
Robert Hensing
65de18210d lib/modules.nix: Apply argument f of old old byName 2023-07-11 12:22:57 +02:00
Robert Hensing
c70a5e9223 lib/modules.nix: Apply argument attr of old byName 2023-07-11 12:22:08 +02:00
Robert Hensing
d1e18a369a lib/modules.nix: Inline byName
byName is not an abstraction. This is the first commit in a series
that refactors it away.
2023-07-11 11:37:56 +02:00
Robert Hensing
b1ad9cd27d
Merge pull request #238136 from hercules-ci/nixos-nixpkgs-dont-check-when-_module.args.pkgs-is-set
`nixos/nixpkgs`: Don't check when `_module.args.pkgs` is set
2023-06-23 19:17:36 +02:00
Robert Hensing
895ac17634
lib/modules.nix: Clean up mergeAttrDefinitionsWithPrio impl 2023-06-23 18:10:49 +02:00
figsoda
8a1a028694 lib/modules: remove unused let bindings 2023-06-23 09:41:04 +00:00
Robert Hensing
36ea2bbfe8 lib.modules: Add mergeAttrDefinitionsWithPrio
This will let us make assertions involving _module.args.pkgs, which
is not an option but a value attribute, and therefore doesn't have
its own highestPrio to inspect. The new function gives us that info.
2023-06-16 22:08:16 +02:00
pennae
b9756b4de1 lib: unhide _module.args
this was a temporary fix that should hopefully no longer be necessary.
2023-06-16 19:26:23 +02:00
pennae
d36f950d40 lib: turn *MD functions into aliases
with docbook gone and MD the default these aren't needed any more. we
can't remove them yet because there's thousands of uses, but maybe some
day we can.
2023-06-13 16:56:32 +02:00
Robert Hensing
eab660d91e lib.modules: configurationClass -> class
This simplifies the documentation. `configuration` is implied by `_type`.
2023-05-06 18:32:59 +02:00
Robert Hensing
89491bef8d lib.modules: in evalModules return move _module.class -> configurationClass 2023-05-06 18:32:59 +02:00
Robert Hensing
fd88c79418 lib.modules: Change class declaration in module to _class 2023-05-06 18:32:59 +02:00
Robert Hensing
8054785157 lib/modules: Move class out of specialArgs 2023-05-06 18:32:58 +02:00
Robert Hensing
73f584c3cc lib/modules.nix: Deduplicate documentation
`file://./..` looks redundant, but makes the url clickable in vscode.
2023-05-06 18:32:58 +02:00
Robert Hensing
84b1b01702 lib/modules: Only interpret class declaration in non-shorthand mode
This is to avoid stealing keys from submodules. `class` might be
common enough that reinterpreting existing `class` attributes in
configurations as a declaration leads to fairly widespread problems.
2023-05-06 18:29:04 +02:00
Robert Hensing
1f4a58ef03 lib/modules.nix: Refactor: extract applyModuleArgs 2023-05-06 18:29:04 +02:00
Robert Hensing
06ca78663c lib/modules.nix: Refactor: evaluate applyModuleArgsIfFunction in attrs case 2023-05-06 18:29:04 +02:00
Robert Hensing
439f6790bd lib/modules.nix: Restore old collectModules interface 2023-05-06 18:29:04 +02:00
Robert Hensing
9714487f74 lib/modules: Explain that a configuration can't be loaded as a module 2023-05-06 18:29:04 +02:00
Robert Hensing
2e689d58cb lib/modules: Improve error when a configuration is imported
This is appears to be a fairly common mistake for beginners who want
to build larger things from the system configurations, such as NixOps
networks, etc. Further explanation seems appropriate.
2023-05-06 18:29:03 +02:00
Robert Hensing
58f385f680 lib/modules: Check against importing things with a _type 2023-05-06 18:29:03 +02:00
Robert Hensing
b8ff2807a2 lib/modules: Add class concept to check imports
This improves the error message when an incompatible module is
imported.
2023-05-06 18:29:03 +02:00
Robert Hensing
3633bf98be lib/modules.nix: Make some functions private
The supposedly public nature of these functions has been holding
back module system maintenance, while usages of these functions
are expected to be rare. If used anywhere, presumably they're
emulating module system behavior because some use case isn't supported
properly. We should try to support such a use case directly, if it
even exists.
2023-05-06 18:29:03 +02:00
Robert Hensing
fe15279390 lib/modules.nix: Use explicit exports 2023-05-06 18:22:51 +02:00
Naïm Favier
8751764236
lib/modules: better error for invalid option declarations
Make `byName` aware of whether it's processing options or config to give
slightly more accurate error messages.
2023-03-22 12:37:28 +01:00
Robert Hensing
118bdf25a6 lib/modules: Allow an "anonymous" module with key in disabledModules
This makes the following work

    disabledModules = [ foo.nixosModules.bar ];

even if `bar` is not a path, but rather a module such as

    { key = "/path/to/foo#nixosModules.bar"; config = ...; }

By supporting this, the user will often be able to use the same syntax
for both importing and disabling a module. This is becoming more relevant
because flakes promote the use of attributes to reference modules. Not
all of these modules in flake attributes will be identifiable, but with
the help of a framework such as flake-parts, these attributes can be
guaranteed to be identifiable (by outPath + attribute path).
2023-03-01 15:03:44 +01:00
Naïm Favier
fb1bc8de93
lib/modules: make mkAliasOptionModule emit DocBook
Follow-up to https://github.com/NixOS/nixpkgs/pull/208407

Removing `mdDoc` isn't enough, we need to emit actual DocBook.
2023-01-08 22:44:18 +01:00
pennae
e912c7bfe9 lib/modules: hide _module.args docs
unfortunately we can't unconditionally make this text markdown without
impacting downstream users of docs generation (as noted in #175586).
hide it entirely until the transition is complete.
2023-01-05 02:33:13 +01:00
pennae
4c1cfbdb84 modules: add mkAliasOptionModuleMD
mkAliasOptionModule should not default to mdDoc descriptions because
that can break out-of-tree users of documentation infrastructure. add an
explicitly-MD variant for now, to be removed some time after the MD
transition is complete.
2023-01-05 02:33:13 +01:00
figsoda
695d4bc76b lib: fix typos 2022-12-17 18:59:29 -05:00
Valentin Gagarin
260de5901e
Merge pull request #204103 from ncfavier/doc-mkOrder
nixos/doc: document `mkOrder` and friends
2022-12-02 17:19:40 +01:00
Naïm Favier
e8927c46b8
nixos/doc: document mkOrder and friends
Add a section on ordering option definitions.

Also mention `mkDefault` in the section on `mkOverride`.

Clarify the code a bit by renaming `defaultPriority` to
`defaultOverridePriority` and introducing `defaultOrderPriority`.
2022-12-02 14:15:24 +01:00
Robert Hensing
6110a6009f lib/modules: Add context to the "option does not exist" error
Add trace items that provide context for a failed definition that
can not be caught within the Nix language.

This also adds a test for the `tryEval` behavior of `showDefs`.
2022-12-02 11:06:53 +00:00
Shea Levy
ad10d4fdef lib.modules.doRename: Don't define warning, even as undefined, if not warning.
This fixes mkAliasOptionModule in systems with no warning option.
2022-11-03 13:12:58 +01:00