Commit graph

51 commits

Author SHA1 Message Date
Nicolas B. Pierron a6b455bbae NixOS modules: Add error context on module arguments evaluation. 2015-07-14 15:07:54 +02:00
Eelco Dolstra c738b309ee types.uniq types.bool -> types.bool 2015-06-15 18:10:26 +02:00
Dan Peebles b13cb54614 Bring an importable modulesPath back from the dead, in the only way I know 2015-06-08 01:55:49 +00:00
Nicolas B. Pierron 05e8a48fb4 Document and rename internal option of modules. 2015-03-15 14:45:42 +01:00
Nicolas B. Pierron ed91474e9b Share common code for merging option definitions.
This move idioms which were used in `evalOptionValue` and in the `merge`
functions of `listOf` and `attrsOf` types, such that we can use a names such
as `isDefined` and `optionalValue` instead or repeating identical
comparisons of `defsFinal == []`.
2015-03-12 23:42:58 +01:00
Nicolas B. Pierron dd4f5f6b78 Rename mergeDefinitions internal steps to functions which are independent of each others. 2015-03-12 23:42:58 +01:00
Nicolas B. Pierron 83dc60456e Expose submodule arguments to builtins.functionArgs before applying the arguments.
The current implementation of the ApplyIfFunction is looking at the
arguments of a module to decide which arguments should be given to each
module.  This patch make sure that we do not wrap a submodule function in
order to keep functionArgs working as expected.
2015-03-12 23:42:58 +01:00
Shea Levy 772b8869d2 Add comment about limitation on __internal.check 2015-03-12 23:42:57 +01:00
Shea Levy 0a0a29fd0b Add comments about the module system interface
Ideally the module system could be configured pretty much completely by
the contents of the modules themselves, so add comments about avoiding
complicating it further and possibly removing now-redundant
configurability from the existing interface.
2015-03-12 23:42:57 +01:00
Shea Levy e3eff53037 evalModules: Add internal option for the check argument 2015-03-12 23:42:57 +01:00
Shea Levy e4a06f35b1 nixos: Don't evaluate twice to get the value of config.nixpkgs 2015-03-12 23:42:57 +01:00
Shea Levy 1d62ad4746 modules.nix: Generate the extra argument set from the configuration
This allows for module arguments to be handled modularly, in particular
allowing the nixpkgs module to handle the nixpkgs import internally.
This creates the __internal option namespace, which should only be added
to by the module system itself.
2015-03-12 23:42:57 +01:00
Shea Levy 9255c48a06 Move property processing, type checking, and merge code into a function
This makes the relationship between property types clearer, and more
importantly will let option types parameterized by other option types
reuse the code for delegated type checking and merging.
2015-03-12 23:42:57 +01:00
Nicolas B. Pierron d7f29acd48 modules: Extract mkAliasDefinition from the rename.nix NixOS module. 2014-12-22 22:38:38 +01:00
Luca Bruno 350fa1f775 nixos: Try to show an helpful message when the user sets config. or options.
Feel free to improve or remove :-)
2014-11-01 23:33:24 +01:00
Eelco Dolstra 97220c973f Replace hasAttr/getAttr calls with the ? and . operators
For NixOS evaluation, this gives a ~21% reduction in the number of
values allocated and a ~4% speedup. It's also more readable.
2014-10-05 01:11:06 +02:00
Eelco Dolstra 6c2bf141cf lib: Use arithmetic operators rather than builtins.add etc. 2014-10-05 01:10:06 +02:00
Nicolas Pierron b5f0cc3cda Merge options having the submodule type.
Now we should be able to have multiple declaration of the same option as
long as all declarations have the same type.  If the type has a sub module,
then it is merged with the submodules of other declarations, as done with
option sets.

In addition, the file of the option declaration is passed into the
submodule, such as the documentation can display it correctly.
2014-09-07 19:03:20 +02:00
Nicolas Pierron bb944b4dc8 Annotate option-set options with the file in which they are declared.
This modification improves NixOS manual by listing in which file, each
submodule option is declared.  This solve the issue that files are not
reported when looking at options such as fileSystems.<name?>.neededForBoot
2014-09-07 19:03:20 +02:00
Nicolas Pierron eb7a17a1cf Add error an message to prevent use of useless submodules. 2014-08-29 18:54:15 +02:00
Jan Malakhovski 0ea84c4445 minor fix in documentation
Signed-off-by: Domen Kožar <domen@dev.si>
2014-06-26 11:13:15 +02:00
Rob Vermaas 90a7711e08 Re-introduce (marked as obsolete) mkStrict function, to allow old nixops deployments to keep working. 2014-05-05 12:29:38 +02:00
Eelco Dolstra 0469f92faf Bring back mkOrder 2014-03-30 20:35:25 +02:00
Shea Levy 2deb26bd4a Pass lib to modules
Since mkOption, types, etc. are defined there, lib is really part of the interface
2014-02-11 13:51:54 -05:00
Eelco Dolstra 785eaf2cea Add some primops to lib 2013-11-12 13:48:30 +01:00
Eelco Dolstra a61b800da5 Fix backward compatibility with Nix < 1.6
"with" used to be less lazy, so don't rely on that.  Also don't use
the "<" operator.
2013-10-30 19:12:25 +01:00
Eelco Dolstra 800f9c2037 Show correct position info for errors in submodules
E.g.

  The unique option `fileSystems./.device' is defined multiple times, in `/etc/nixos/configuration.nix' and `/etc/nixos/foo.nix'.

This requires passing file/value tuples to the merge functions.
2013-10-30 14:57:43 +01:00
Eelco Dolstra c7f7ceefd6 Export only the files of the active definitions 2013-10-30 14:57:42 +01:00
Eelco Dolstra 89b1dd8dde Fix environment.checkConfigurationOptions
This requires delaying the declaredness check until later, otherwise
we get an infinite recursion querying
environment.checkConfigurationOptions.
2013-10-29 16:18:23 +01:00
Eelco Dolstra 85b69834e7 fixMergeModules shouldn't check whether options are declared 2013-10-29 14:34:39 +01:00
Eelco Dolstra be33a68177 Add fixMergeModules back in
NixOps uses it.
2013-10-29 14:23:10 +01:00
Eelco Dolstra 9143910139 Support module keys that are paths 2013-10-29 14:15:33 +01:00
Eelco Dolstra adc1b38b85 Add a priority level for overrides in VM tests
Now that overriding fileSystems in qemu-vm.nix works again, it's
important that the VM tests that add additional file systems use the
same override priority.  Instead of using the same magic constant
everywhere, they can now use mkVMOverride.

http://hydra.nixos.org/build/6695561
2013-10-29 13:14:30 +01:00
Eelco Dolstra 3115addf4c Fix nixos-option
In particular, it no longer produces an "infinite recursion" error
when run with no arguments.
2013-10-28 22:45:58 +01:00
Eelco Dolstra 73f32d0375 Show precise error messages in option merge failures
For instance, if time.timeZone is defined multiple times, you now get
the error message:

  error: user-thrown exception: The unique option `time.timeZone' is defined multiple times, in `/etc/nixos/configurations/misc/eelco/x11vnc.nix' and `/etc/nixos/configuration.nix'.

while previously you got:

  error: user-thrown exception: Multiple definitions of string. Only one is allowed for this option.

and only an inspection of the stack trace gave a clue as to what
option caused the problem.
2013-10-28 22:45:57 +01:00
Eelco Dolstra 1b2006270f Support mkOverride in non-leaf nodes 2013-10-28 22:45:57 +01:00
Eelco Dolstra 1367074940 Allow imports in plain modules 2013-10-28 22:45:57 +01:00
Eelco Dolstra 1e24ce2a9b Remove debug code 2013-10-28 22:45:57 +01:00
Eelco Dolstra e28ea1239f Fix evaluation of environment.variables 2013-10-28 22:45:57 +01:00
Eelco Dolstra 9a8516438e Fix NixOps evaluation 2013-10-28 22:45:57 +01:00
Eelco Dolstra 44d6d88739 Fix option renaming 2013-10-28 22:45:56 +01:00
Eelco Dolstra f4a418761b Check for undeclared options 2013-10-28 22:45:56 +01:00
Eelco Dolstra c263b5b284 Show error locations in submodules 2013-10-28 22:45:56 +01:00
Eelco Dolstra 89bd18b3af Fix manual generation 2013-10-28 22:45:56 +01:00
Eelco Dolstra b6b14dae78 Fix comment 2013-10-28 22:45:55 +01:00
Eelco Dolstra b479dac8df Inline some functions on the critical path 2013-10-28 22:45:55 +01:00
Eelco Dolstra 9769671260 Reduce the number of allocations a bit 2013-10-28 22:45:55 +01:00
Eelco Dolstra 40913958a2 Keep position information for option declarations and definitions
Also, when an option definition fails to type-check, print the file
name of the module in which the offending definition occurs, e.g.

  error: user-thrown exception: The option value `boot.loader.grub.version' in `/etc/nixos/configuration.nix' is not a integer.
2013-10-28 22:45:55 +01:00
Eelco Dolstra 0e333688ce Big cleanup of the NixOS module system
The major changes are:

* The evaluation is now driven by the declared options.  In
  particular, this fixes the long-standing problem with lack of
  laziness of disabled option definitions.  Thus, a configuration like

    config = mkIf false {
      environment.systemPackages = throw "bla";
    };

  will now evaluate without throwing an error.  This also improves
  performance since we're not evaluating unused option definitions.

* The implementation of properties is greatly simplified.

* There is a new type constructor "submodule" that replaces
  "optionSet".  Unlike "optionSet", "submodule" gets its option
  declarations as an argument, making it more like "listOf" and other
  type constructors.  A typical use is:

    foo = mkOption {
      type = type.attrsOf (type.submodule (
        { config, ... }:
        { bar = mkOption { ... };
          xyzzy = mkOption { ... };
        }));
    };

  Existing uses of "optionSet" are automatically mapped to
  "submodule".

* Modules are now checked for unsupported attributes: you get an error
  if a module contains an attribute other than "config", "options" or
  "imports".

* The new implementation is faster and uses much less memory.
2013-10-28 22:45:55 +01:00
Eelco Dolstra a4f1f4b367 Small cleanup 2013-10-24 14:49:59 +02:00