1 files changed, 17 insertions, 0 deletions
diff --git a/lib/eval-source.nix b/lib/eval-source.nix
new file mode 100644
index 000000000..de5f0b43c
--- /dev/null
+++ b/lib/eval-source.nix
@@ -0,0 +1,17 @@
+with import <stockholm/lib>;
+let
+  eval = _file: source: evalModules {
+    modules = singleton {
+      inherit _file;
+      options.source = mkOption {
+        type = types.attrsOf types.source;
+        default = {};
+      };
+      config = {
+        inherit source;
+      };
+    };
+  };
+in
+  # This function's return value can be used as pkgs.populate input.
+  _file: source: (eval _file source).config.source