101 lines
2.6 KiB
Nix
101 lines
2.6 KiB
Nix
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# https://github.com/NixOS/nixpkgs/blob/a5cfe012401cfebb4b2c28e74857b8ffe1402b4b/lib/modules.nix
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{ lib }:
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with lib.modules;
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let
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inherit (lib)
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addErrorContext
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all
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any
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attrByPath
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attrNames
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catAttrs
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concatLists
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concatMap
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concatStringsSep
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elem
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filter
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foldl'
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functionArgs
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getAttrFromPath
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genericClosure
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head
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id
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imap1
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isAttrs
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isBool
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isFunction
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isInOldestRelease
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isList
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isString
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length
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mapAttrs
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mapAttrsToList
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mapAttrsRecursiveCond
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min
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optional
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optionalAttrs
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optionalString
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recursiveUpdate
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reverseList sort
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seq
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setAttrByPath
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substring
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throwIfNot
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trace
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typeOf
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types
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unsafeGetAttrPos
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warn
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warnIf
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zipAttrs
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zipAttrsWith
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;
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inherit (lib.options)
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isOption
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mkOption
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showDefs
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showFiles
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showOption
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unknownModule
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;
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inherit (lib.strings)
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isConvertibleWithToString
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;
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unifyModuleSyntax = file: key: m:
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let
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addMeta = config: if m ? meta
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then mkMerge [ config { meta = m.meta; } ]
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else config;
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addFreeformType = config: if m ? freeformType
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then mkMerge [ config { _module.freeformType = m.freeformType; } ]
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else config;
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in
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if m ? config || m ? options then
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let badAttrs = removeAttrs m ["_class" "_file" "key" "disabledModules" "imports" "options" "config" "meta" "freeformType"]; in
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if badAttrs != {} then
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throw "Module `${key}' has an unsupported attribute `${head (attrNames badAttrs)}'. This is caused by introducing a top-level `config' or `options' attribute. Add configuration attributes immediately on the top level instead, or move all of them (namely: ${toString (attrNames badAttrs)}) into the explicit `config' attribute."
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else
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{ _file = toString m._file or file;
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_class = m._class or null;
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key = toString m.key or key;
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disabledModules = m.disabledModules or [];
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imports = m.imports or [];
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options = m.options or {};
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config = addFreeformType (addMeta (m.config or {}));
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}
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else
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# shorthand syntax
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throwIfNot (isAttrs m) "module ${file} (${key}) does not look like a module."
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{ _file = toString m._file or file;
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_class = m._class or null;
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key = toString m.key or key;
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disabledModules = m.disabledModules or [];
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imports = m.require or [] ++ m.imports or [];
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options = {};
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config = addFreeformType (removeAttrs m ["_class" "_file" "key" "disabledModules" "require" "imports" "freeformType"]);
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};
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in {inherit unifyModuleSyntax;}
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