Commit graph

60 commits

Author SHA1 Message Date
Graham Christensen 152c63c9ff
Convert libs to a fixed-point
This does break the API of being able to import any lib file and get
its libs, however I'm not sure people did this.

I made this while exploring being able to swap out docFn with a stub
in #2305, to avoid functor performance problems. I don't know if that
is going to move forward (or if it is a problem or not,) but after
doing all this work figured I'd put it up anyway :)

Two notable advantages to this approach:

1. when a lib inherits another lib's functions, it doesn't
   automatically get put in to the scope of lib
2. when a lib implements a new obscure functions, it doesn't
   automatically get put in to the scope of lib

Using the test script (later in this commit) I got the following diff
on the API:

  + diff master fixed-lib
  11764a11765,11766
  > .types.defaultFunctor
  > .types.defaultTypeMerge
  11774a11777,11778
  > .types.isOptionType
  > .types.isType
  11781a11786
  > .types.mkOptionType
  11788a11794
  > .types.setType
  11795a11802
  > .types.types

This means that this commit _adds_ to the API, however I can't find a
way to fix these last remaining discrepancies. At least none are
_removed_.

Test script (run with nix-repl in the PATH):

  #!/bin/sh

  set -eux

  repl() {
      suff=${1:-}
      echo "(import ./lib)$suff" \
          | nix-repl 2>&1
  }

  attrs_to_check() {
      repl "${1:-}" \
          | tr ';'  $'\n' \
          | grep "\.\.\." \
          | cut -d' ' -f2 \
          | sed -e "s/^/${1:-}./" \
          | sort
  }

  summ() {
      repl "${1:-}" \
          | tr ' ' $'\n' \
          | sort \
          | uniq
  }

  deep_summ() {
      suff="${1:-}"
      depth="${2:-4}"
      depth=$((depth - 1))
      summ "$suff"

      for attr in $(attrs_to_check "$suff" | grep -v "types.types"); do
          if [ $depth -eq 0 ]; then
              summ "$attr" | sed -e "s/^/$attr./"
          else
              deep_summ "$attr" "$depth" | sed -e "s/^/$attr./"
          fi
      done
  }

  (
      cd nixpkgs

      #git add .
      #git commit -m "Auto-commit, sorry" || true
      git checkout fixed-lib
      deep_summ > ../fixed-lib
      git checkout master
      deep_summ > ../master
  )

  if diff master fixed-lib; then
      echo "SHALLOW MATCH!"
  fi

  (
      cd nixpkgs
      git checkout fixed-lib
      repl .types
  )
2017-09-16 21:36:43 -04:00
zimbatm 4d545297d8 lib: introduce imap0, imap1 (#25543)
* lib: introduce imap0, imap1

For historical reasons, imap starts counting at 1 and it's not
consistent with the rest of the lib.

So for now we split imap into imap0 that starts counting at zero and
imap1 that starts counting at 1. And imap is marked as deprecated.

See c71e2d4235 (commitcomment-21873221)

* replace uses of lib.imap

* lib: move imap to deprecated.nix
2017-07-04 23:29:23 +01:00
Nikolay Amiantov 63e0d50f16 types: add short docstrings
Fixes #26055
2017-05-25 19:24:05 +03:00
Nikolay Amiantov ee4f8c2dc9 nixos doc: document coercedTo type
Also mention about docs in types.nix and fix a small error in related
documentation.

Fixes #26055.
2017-05-24 15:52:26 +03:00
Tom Saeger 5989515b94 lib: trivial spelling fixes 2017-04-19 19:37:55 -05:00
John Ericson 4c0d7da183 Get rid of all with { inherit... } and just used let inherit...
The old forms presumably predates, or were made in ignorance of,
`let inherit`. This way is better style as the scoping as more lexical,
something which Nix can (or might already!) take advantage of.
2017-03-30 03:05:05 -04:00
Benjamin Staffin d9123a2329 lib: fix mixed tab/space indents, trailing whitespace, etc
Nix style seems to have settled on not using spaces between bound
variable names and the lambda : so I also tried to make those somewhat
more consistent throughout.
2017-03-11 17:48:43 -05:00
Nikolay Amiantov 5cbcd3af69 types library: add coercedTo 2017-02-02 01:53:00 +03:00
Eric Sagnes cf2654b2e0 either type: improve merge function 2016-11-08 20:46:34 +01:00
Eric Sagnes e14de56613 module system: extensible option types 2016-11-06 00:05:58 +01:00
Eric Sagnes f923905346 optionSet type: enable deprecation message 2016-09-13 12:57:36 +09:00
zimbatm 2974b6f4c8 Use shell packages to select the user's shell
The string type is still available for backward-compatiblity.
2016-06-12 20:35:34 +01:00
Eelco Dolstra b056948c00 Improve types.listOf error message
If an option value is not a list, you now get

  The option value `bla' in `file.nix' is not a list.

rather than

  value is a string while a list was expected, at .../nixpkgs/lib/lists.nix:49:56
2016-05-25 11:39:17 +02:00
aszlig 009fd5ef77
lib/types: Revert handling submodules for "either"
This reverts commit 0f0805b, because @nbp had concerns about whether
this would be a good idea and pointed out problems with this.

We currently do not have a case where "either" is used in conjunction
with submodules, but I'm reverting it anyway to prevent people from
adding options using that type in that way.

This is now being reviewed in #14053.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
2016-03-19 19:11:31 +01:00
aszlig 0f0805b51a
lib/types: Handle submodules for type "either"
So far the "either" type only handled "flat" types, so you couldn't do
something like:

type = either int (submodule {
  options = ...;
});

Not only caused this the submodule's options not being checked but also
not show up in the documentation.

This was something we stumbled on with #13916.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
Cc: @edolstra
2016-03-19 17:22:39 +01:00
Eelco Dolstra f3d94cfc23 Revert "Add the tool "nixos-typecheck" that can check an option declaration to:"
This reverts commit cad8957eab. It
breaks NixOps, but more importantly, such major changes to the module
system really need to be reviewed.
2016-03-01 20:52:06 +01:00
Thomas Strobel cad8957eab Add the tool "nixos-typecheck" that can check an option declaration to:
- Enforce that an option declaration has a "defaultText" if and only if the
   type of the option derives from "package", "packageSet" or "nixpkgsConfig"
   and if a "default" attribute is defined.

 - Enforce that the value of the "example" attribute is wrapped with "literalExample"
   if the type of the option derives from "package", "packageSet" or "nixpkgsConfig".

 - Warn if a "defaultText" is defined in an option declaration if the type of
   the option does not derive from "package", "packageSet" or "nixpkgsConfig".

 - Warn if no "type" is defined in an option declaration.
2016-02-29 01:09:00 +01:00
aszlig 98faa0c8f3
lib/types: Set name of types.package to "package"
Nobody seems to have noticed this (except @Profpatsch) that options with
a "package" type do not get included in the manual.

So debugging this was a bit more involving because while generating the
manual there is an optionList' attribute built from the collected
attributes of all the option declarations.

Up to that point everything is fine except if it comes to
builtins.toXML, where attributes with { type = "derivation" } won't get
included, for example see here:

nix-repl> builtins.toXML { type = "derivation"; foo = "bar"; }
"<?xml version='1.0' encoding='utf-8'?>\n<expr>\n  <derivation>
 <repeated />\n  </derivation>\n</expr>\n"

nix-repl> builtins.toXML { type = "somethingelse"; foo = "bar"; }
"<?xml version='1.0' encoding='utf-8'?>\n<expr>\n  <attrs>
     <attr name=\"foo\">\n      <string value=\"bar\" />\n    </attr>
     <attr name=\"type\">\n      <string value=\"somethingelse\" />
     </attr>\n </attrs>\n</expr>\n"

The following function in libexpr/eval.cc (Nix) is responsible for toXML
dropping the attributes:

bool EvalState::isDerivation(Value & v)
{
    if (v.type != tAttrs) return false;
    Bindings::iterator i = v.attrs->find(sType);
    if (i == v.attrs->end()) return false;
    forceValue(*i->value);
    if (i->value->type != tString) return false;
    return strcmp(i->value->string.s, "derivation") == 0;
}

So I've renamed this now to "package" which is not only more consistent
with the option type but also shouldn't cause similar issues anymore.

Tested this on base of b60ceea, because building the dependencies on
recent libc/staging changes on master took too long.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
Reported-by: Profpatsch <mail@profpatsch.de>
2016-02-17 21:12:24 +01:00
Igor Pashev b078ae9c16 Use x == null instead of builtins.isNull x 2015-12-04 07:22:57 +03:00
Igor Pashev 363e6978ce Allow enum of integers (and any other type)
Closes #9826.
2015-12-04 07:15:14 +03:00
Jan Malakhovski 33ae3f2fe4 nixos,lib: move environment generation related copy-paste to lib 2015-09-18 18:48:49 +00:00
Benno Fünfstück 7cd6b3cf76 Revert change of path type
The change caused lots of evaluation errors, since it caused derivations to no longer be valid paths as well.
2015-08-15 15:38:12 +02:00
Benno Fünfstück 691f683c8c types.nix: better error message for non-paths
This improves error messages when a set or a list is used where a path
was expected. For an example, if you used a package set (as opposed to a
single package) in systemPackages before this commit, the error was:

```
cannot coerce a list to a string, at "/home/nixpkgs/lib/types.nix":103:37
```

Now, the error message reads:

```
The option value `environment.systemPackages' in `/etc/nixos/configuration.nix' is not a list of paths.
```
2015-08-15 13:05:57 +02:00
Eelco Dolstra 214d4fb73c Allow options with type "package" to be store paths
For example, this allows writing

  nix.package = /nix/store/786mlvhd17xvcp2r4jmmay6jj4wj6b7f-nix-1.10pre4206_896428c;

Also, document types.package in the manual.
2015-08-07 03:09:57 +02:00
Eelco Dolstra 637e35deb9 Use foldl' instead of fold in some places 2015-07-23 18:31:54 +02:00
Eelco Dolstra e212e07cf6 Make types.bool complain on conflicting definitions
Previously, conflicting definitions would merge to "true". Now they
give an error, e.g.

  error: The option `hardware.enableAllFirmware' has conflicting definitions, in `/etc/nixos/configurations/misc/eelco/stuff.nix' and `/etc/nixos/configurations/misc/eelco/mandark.nix'.
2015-06-15 18:07:48 +02:00
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
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 4f5c6330c9 types.loaOf: Update check function
This symplifies typechecking and allows properties to be used inside the
function body. It also makes possible checking the type of the result.
2015-03-12 23:42:57 +01:00
Shea Levy 8737d1783f types.attrsOf: Use mergeDefinitions to handle each element
This simplifes typechecking and allows properties to be used inside of
the attribute sets.

This fixes the empty synergy-client and synergy-server services
previously generated on systems with synergy disabled.
2015-03-12 23:42:57 +01:00
Shea Levy e4bc2592f3 types.listOf: Use mergeDefinitions to handle each element
This simplifies typechecking and allows properties to be used inside the lists
2015-03-12 23:42:57 +01:00
Nicolas Pierron 4ff1ab5a56 Remove types.functionTo. 2014-09-07 19:41:45 +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
Eelco Dolstra f932910323 types.nix: Add ‘either’ type 2014-08-19 18:24:37 +02:00
Shea Levy da4adc2a4f Fix description to match convention 2014-05-01 11:46:44 -04:00
Shea Levy ab2cd34076 Add enum option type 2014-05-01 11:30:20 -04:00
Eelco Dolstra ebe57b1ac8 Remove lib.typeOf
It clashes with builtins.typeOf.
2014-02-27 21:27:29 +01:00
Shea Levy 83c98e4dd6 loaOf: Allow merging definitions from a list into other definitions IFF there is a name attribute 2014-02-20 10:40:49 -05:00
Shea Levy c8f1a6ac1e Revert "Add nixosSubmodule option type"
Moving recent types work to a separate branch for now

This reverts commit ca1c5cfa8f.
2014-02-13 12:10:50 -05:00
Shea Levy 4fd825cc94 Revert "Add option type for a submodule with extra arguments"
Moving recent types work to a separate branch for now

This reverts commit 8764758044.
2014-02-13 12:10:50 -05:00
Shea Levy 220654e205 Revert "Add heterogeneousAttrsOf option type"
Moving recent types work to a separate branch for now

This reverts commit 3f70dabad3.
2014-02-13 12:10:50 -05:00
Shea Levy 3f70dabad3 Add heterogeneousAttrsOf option type
It is parameterized by a function that takes a name and evaluates to the
option type for the attribute of that name. Together with
submoduleWithExtraArgs, this subsumes nixosSubmodule.
2014-02-11 14:59:24 -05:00
Shea Levy 8764758044 Add option type for a submodule with extra arguments 2014-02-11 14:39:46 -05:00
Shea Levy ca1c5cfa8f Add nixosSubmodule option type
Since NixOS modules expect special arguments, use a hack to provide them
2014-02-11 14:21:34 -05:00
Shea Levy 84a7a09bc8 Try to improve naming of list elements in loaOf types
Signed-off-by: Shea Levy <shea@shealevy.com>
2014-02-08 15:20:25 -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 70a2c54527 Strictly check the arguments to mkOption
And fix various instances of bad arguments.
2013-10-30 15:35:09 +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