71 lines
1.7 KiB
Nix
71 lines
1.7 KiB
Nix
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# NixOS module handling.
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let lib = import ./default.nix; in
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with { inherit (builtins) head tail; };
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with import ./trivial.nix;
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with import ./lists.nix;
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with import ./misc.nix;
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with import ./attrsets.nix;
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with import ./properties.nix;
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rec {
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# Unfortunately this can also be a string.
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isPath = x: !(
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builtins.isFunction x
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|| builtins.isAttrs x
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|| builtins.isInt x
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|| builtins.isBool x
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|| builtins.isList x
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);
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importIfPath = path:
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if isPath path then
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import path
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else
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path;
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applyIfFunction = f: arg:
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if builtins.isFunction f then
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f arg
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else
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f;
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moduleClosure = initModules: args:
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let
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moduleImport = m:
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(applyIfFunction (importIfPath m) args) // {
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# used by generic closure to avoid duplicated imports.
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key = m;
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};
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removeKeys = list: map (m: removeAttrs m ["key"]) list;
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getImports = m:
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if m ? config || m ? options then
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attrByPath ["imports"] [] m
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else
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toList (rmProperties (attrByPath ["require"] [] (delayProperties m)));
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getImportedPaths = m: filter isPath (getImports m);
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getImportedSets = m: filter (x: !isPath x) (getImports m);
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inlineImportedSets = list:
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lib.concatMap (m:[m] ++ map moduleImport (getImportedSets m)) list;
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in
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removeKeys (inlineImportedSets (lazyGenericClosure {
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startSet = map moduleImport initModules;
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operator = m: map moduleImport (getImportedPaths m);
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}));
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selectDeclsAndDefs = modules:
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lib.concatMap (m:
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if m ? config || m ? options then
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attrByPath ["options"] [] m
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++ attrByPath ["config"] [] m
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else
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[ m ]
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) modules;
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}
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