1 files changed, 31 insertions, 0 deletions
diff --git a/pkgs/aszlig/rustfmt/default.nix b/pkgs/aszlig/rustfmt/default.nix
new file mode 100644
index 00000000..cde4d010
--- /dev/null
+++ b/pkgs/aszlig/rustfmt/default.nix
@@ -0,0 +1,31 @@
+{ rustfmt, runCommand, remarshal }:
+
+let
+  defaultConfig = {
+    format_code_in_doc_comments = true;
+    format_macro_matchers = true;
+    format_strings = true;
+    group_imports = "StdExternalCrate";
+    match_block_trailing_comma = true;
+    max_width = 79;
+    newline_style = "Unix";
+    normalize_doc_attributes = true;
+    overflow_delimited_expr = true;
+    reorder_impl_items = true;
+    unstable_features = true;
+    use_field_init_shorthand = true;
+    use_try_shorthand = true;
+    wrap_comments = true;
+  };
+
+in rustfmt.overrideAttrs (drv: {
+  patches = (drv.patches or []) ++ [ ./config.patch ];
+  patchFlags = [ "-p1" "-d" "src/tools/rustfmt" ];
+  DEFAULT_CONFIG_FILE = runCommand "rustfmt.conf" {
+    nativeBuildInputs = [ remarshal ];
+    value = builtins.toJSON defaultConfig;
+    passAsFile = [ "value" ];
+  } ''
+    json2toml "$valuePath" "$out"
+  '';
+})