stockholm/lib/eval-source.nix

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with import <stockholm/lib>;
let
eval = _file: source: evalModules {
modules = singleton {
inherit _file;
imports = map (source: { inherit source; }) (toList source);
options.source = mkOption {
type = types.attrsOf types.source;
default = {};
};
};
};
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sanitize = x: getAttr (typeOf x) {
set = mapAttrs
(const sanitize)
(filterAttrs (name: value: name != "_module" && value != null) x);
string = x;
};
in
# This function's return value can be used as pkgs.populate input.
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_file: source: sanitize (eval _file source).config.source