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Author SHA1 Message Date
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
Eelco Dolstra 5fef92c4a0 Move pkgs/lib/ to lib/ 2013-10-10 13:28:21 +02:00
Renamed from pkgs/lib/modules.nix (Browse further)