fixup tests

lib/upstreamables.nix

@@ -0,0 +1,36 @@
+{ lib, pkgs }:
+
+with lib;
+
+let self = {
+
+  importYAML = path: importJSON (pkgs.runCommand "yaml-to-json" { } ''
+    ${pkgs.remarshal}/bin/remarshal -i ${path} -if yaml -of json > $out
+  '');
+
+  toYAML = config: builtins.readFile (pkgs.runCommand "to-yaml" { } ''
+    ${pkgs.remarshal}/bin/remarshal -i ${pkgs.writeText "to-json" (builtins.toJSON config)} -if json -of yaml > $out
+  '');
+
+  toMultiDocumentYaml = name: documents: pkgs.runCommand name { }
+    (concatMapStringsSep "\necho --- >> $out\n"
+      (d:
+        "${pkgs.remarshal}/bin/remarshal -i ${builtins.toFile "doc" (builtins.toJSON d)} -if json -of yaml >> $out"
+      )
+      documents);
+
+  toBase64 = value:
+    builtins.readFile
+      (pkgs.runCommand "value-to-b64" { } "echo -n '${value}' | ${pkgs.coreutils}/bin/base64 -w0 > $out");
+
+  exp = base: exp: foldr (value: acc: acc * base) 1 (range 1 exp);
+
+  octalToDecimal = value: (foldr
+    (char: acc: {
+      i = acc.i + 1;
+      value = acc.value + (toInt char) * (self.exp 8 acc.i);
+    })
+    { i = 0; value = 0; }
+    (stringToCharacters value)).value;
+};
+in self