fix(api-keys): use rustfmt toml

BUCK

@@ -12,3 +12,8 @@ pnpm_workspace(
   ],
   visibility = ["PUBLIC"],
 )
+
+export_file(
+    name = "rustfmt.toml",
+    visibility = ["PUBLIC"],
+)

rustfmt.toml

@@ -0,0 +1,2 @@
+edition = "2021"
+newline_style = "Unix"

toolchains/rust/macros.bzl

@@ -73,6 +73,8 @@ def rustfmt_check_impl(ctx: AnalysisContext) -> list[[
     run_cmd_args = cmd_args(
         ctx.attrs._python_toolchain[PythonToolchainInfo].interpreter,
         galoy_rust_toolchain.rustfmt_check[DefaultInfo].default_outputs,
+        "--config-path",
+        galoy_rust_toolchain.rustfmt_toml[DefaultInfo].default_outputs,
         cmd_args(
             [crate_ctx.srcs_tree, ctx.label.package, ctx.attrs.crate_root],
             delimiter = "/",

toolchains/rust/toolchain.bzl

@@ -3,6 +3,7 @@ GaloyRustToolchainInfo = provider(
         "clippy_output": typing.Any,
         "crate_context": typing.Any,
         "rustfmt_check": typing.Any,
+        "rustfmt_toml": typing.Any
     },
 )
 
@@ -17,12 +18,16 @@ def galoy_rust_toolchain_impl(ctx) -> list[[DefaultInfo, GaloyRustToolchainInfo]
             clippy_output = ctx.attrs._clippy_output,
             crate_context = ctx.attrs._crate_context,
             rustfmt_check = ctx.attrs._rustfmt_check,
+            rustfmt_toml = ctx.attrs._rustfmt_toml,
         ),
     ]
 
 galoy_rust_toolchain = rule(
     impl = galoy_rust_toolchain_impl,
     attrs = {
+        "_rustfmt_toml": attrs.dep(
+            default = "root//:rustfmt.toml"
+        ),
         "_clippy_output": attrs.dep(
             default = "toolchains//rust:clippy_output.py",
         ),