lib: init importers section
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64
lib/importers.nix
Normal file
64
lib/importers.nix
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@ -0,0 +1,64 @@
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{ lib }:
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let
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recImport = { dir, _import ? base: import "${dir}/${base}.nix" }:
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lib.mapFilterAttrs
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(_: v: v != null)
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(n: v:
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if n != "default.nix" && lib.hasSuffix ".nix" n && v == "regular"
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then
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let name = lib.removeSuffix ".nix" n; in lib.nameValuePair (name) (_import name)
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else
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lib.nameValuePair ("") (null))
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(lib.safeReadDir dir);
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mkProfileAttrs =
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/**
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Synopsis: mkProfileAttrs _path_
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Recursively collect the subdirs of _path_ containing a default.nix into attrs.
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This sets a contract, eliminating ambiguity for _default.nix_ living under the
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profile directory.
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Example:
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let profiles = mkProfileAttrs ./profiles; in
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assert profiles ? core.default; 0
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**/
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dir:
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let
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imports =
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let
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files = lib.safeReadDir dir;
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p = n: v:
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v == "directory"
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&& n != "profiles";
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in
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lib.filterAttrs p files;
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f = n: _:
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lib.optionalAttrs
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(lib.pathExists "${dir}/${n}/default.nix")
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{ default = "${dir}/${n}"; }
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// mkProfileAttrs "${dir}/${n}";
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in
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lib.mapAttrs f imports;
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in
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{
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inherit recImport mkProfileAttrs;
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pathsIn = dir:
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let
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fullPath = name: "${toString dir}/${name}";
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in
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map fullPath (lib.attrNames (lib.safeReadDir dir));
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importHosts = dir:
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recImport {
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inherit dir;
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_import = base: {
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modules = import "${toString dir}/${base}.nix";
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};
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};
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}
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