pw_env_setup: Copy pigweed_environment.gni to logs

Change-Id: Ia7672131571dd507acb1ecaeee96539295e92dd7
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/167850
Pigweed-Auto-Submit: Rob Mohr <mohrr@google.com>
Commit-Queue: Auto-Submit <auto-submit@pigweed-service-accounts.iam.gserviceaccount.com>
Presubmit-Verified: CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ted Pudlik <tpudlik@google.com>
diff --git a/pw_env_setup/py/pw_env_setup/env_setup.py b/pw_env_setup/py/pw_env_setup/env_setup.py
index 3351341..bbdace5 100755
--- a/pw_env_setup/py/pw_env_setup/env_setup.py
+++ b/pw_env_setup/py/pw_env_setup/env_setup.py
@@ -473,6 +473,7 @@
 
         with open(gni_file, 'w') as outs:
             self._env.gni(outs, self._project_root)
+        shutil.copy(gni_file, os.path.join(self._install_dir, 'logs'))
 
     def _log(self, *args, **kwargs):
         # Not using logging module because it's awkward to flush a log handler.