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Author SHA1 Message Date
Shea Levy 3c5971692a Simplify crossLists
Signed-off-by: Shea Levy <shea@shealevy.com>
2013-12-12 14:01:48 -05:00
Shea Levy a42508a8ba Add function to call a function with a cross-product of lists of arguments
Signed-off-by: Shea Levy <shea@shealevy.com>
2013-12-12 13:10:41 -05:00
Eelco Dolstra a8b693fef7 Remove backward-compatible implementations of some primops
Nixpkgs requires at least Nix 1.2 anyway, so these are now useless.
2013-11-12 13:50:45 +01:00
Eelco Dolstra 785eaf2cea Add some primops to lib 2013-11-12 13:48:30 +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 d49f141a79 Manual: When building from the channel, link to the exact Git revision 2013-10-24 02:03:10 +02:00
Eelco Dolstra 5fef92c4a0 Move pkgs/lib/ to lib/ 2013-10-10 13:28:21 +02:00
Renamed from pkgs/lib/lists.nix (Browse further)