kleaf: Add --repo_prop argument to bazel wrapper.

This argument should point to a repo.prop file, generated
prior to building for build environments without the repo
binary. The file can be generated with this command:

  repo forall -c 'echo "$REPO_PATH $REPO_LREV"'

If repo does exist on the host machine, it is unnecessary to provide
this file.

Bug: 277367919
Test: manual

Change-Id: I9918b84755adcfa5a447b48b3f0a0537712cba97

1 files changed, 10 insertions, 0 deletions

diff --git a/kleaf/bazel.py b/kleaf/bazel.py
index 30bbdef..0f9e622 100755
--- a/kleaf/bazel.py
+++ b/kleaf/bazel.py
@@ -138,6 +138,13 @@ class BazelWrapper(object):
         parser.add_argument("--cache_dir",
                             type=_require_absolute_path,
                             default=absolute_cache_dir)
+        parser.add_argument(
+            "--repo_prop",
+            help="""Absolute path to repo.prop file, generated with """
+                 """`repo forall -c 'echo "$REPO_PATH $REPO_LREV"'`""",
+            type=_require_absolute_path,
+            default=None,
+        )
 
         # known_args: List of arguments known by this bazel wrapper. These
         #   are stripped from the final bazel invocation.
@@ -168,6 +175,9 @@ class BazelWrapper(object):
         if self.known_args.make_jobs is not None:
             self.env["KLEAF_MAKE_JOBS"] = str(self.known_args.make_jobs)
 
+        if self.known_args.repo_prop is not None:
+            self.env["KLEAF_REPO_PROP"] = self.known_args.repo_prop
+
         cache_dir_bazel_rc = f"{self.absolute_out_dir}/bazel/cache_dir.bazelrc"
         os.makedirs(os.path.dirname(cache_dir_bazel_rc), exist_ok=True)
         with open(cache_dir_bazel_rc, "w") as f: