1 files changed, 18 insertions, 0 deletions
diff --git a/buildRustCrateHelpers.nix b/buildRustCrateHelpers.nix
new file mode 100644
index 0000000..3fdcb66
--- /dev/null
+++ b/buildRustCrateHelpers.nix
@@ -0,0 +1,18 @@
+{ lib, buildPlatform }: {
+  kernel = buildPlatform.parsed.kernel.name;
+  abi = buildPlatform.parsed.abi.name;
+  include = includedFiles: src: builtins.filterSource (path: type:
+    lib.lists.any (f:
+      let p = toString (src + ("/" + f)); in
+      (path == p) || (type == "directory" && lib.strings.hasPrefix path p)
+    ) includedFiles
+  ) src;
+  updateFeatures = f: up: functions: builtins.deepSeq f (lib.lists.foldl' (features: fun: fun features) (lib.attrsets.recursiveUpdate f up) functions);
+  mapFeatures = features: map (fun: fun { features = features; });
+  mkFeatures = feat: lib.lists.foldl (features: featureName:
+    if feat.${featureName} or false then
+      [ featureName ] ++ features
+    else
+      features
+    ) [] (builtins.attrNames feat);
+}