Fix-up.

Author: szilardszaloki

script/build_crate.py

@@ -5,6 +5,7 @@
 
 import argparse
 import os
+from pathlib import Path
 import platform
 import subprocess
 
@@ -18,3 +19,4 @@
 else:
     env["TMPDIR"] = args.temp_dir_path
 subprocess.check_call(cargo_args, env=env)
+Path(f'{args.temp_dir_path}/.stamp').touch()

tools/crates/build_crate.gni

@@ -9,6 +9,7 @@ template("build_crate") {
       defined(invoker["${crate}_exe"]),
       "Please add ${crate}_exe to //brave/tools/crates/config.gni (or to $crate itself)!")
   crate_exe = invoker["${crate}_exe"]
+  crate_target_dir = get_path_info(get_path_info(crate_exe, "dir"), "dir")
 
   action("build_$crate") {
     assert(current_toolchain == host_toolchain)
@@ -24,10 +25,15 @@ template("build_crate") {
 
     inputs = [
       cargo_exe,
+      ".cargo/config.toml",
       "Cargo.lock",
+      "Cargo.toml",
     ]
 
-    outputs = [ crate_exe ]
+    outputs = [
+      crate_exe,
+      "$crate_target_dir/.stamp",
+    ]
 
     # To avoid irreproducible builds,
     # `build_crate`s MUST always build with `cargo vendor`ed deps,
@@ -37,7 +43,7 @@ template("build_crate") {
     # when running `cargo build`.
     args = [
       "--temp_dir_path",
-      rebase_path(root_out_dir),
+      rebase_path(crate_target_dir),
       rebase_path(cargo_exe),
       "build",
       "--quiet",
@@ -47,7 +53,7 @@ template("build_crate") {
       "--config",
       rebase_path(".cargo/config.toml"),
       "--target-dir",
-      rebase_path(get_path_info(crate_exe, "dir") + "/.."),
+      rebase_path(crate_target_dir),
       "--frozen",
       "--package",
       string_replace(crate, "_", "-"),