Finishing touches

projects/bazelshim/src/bazelshim/__main__.py

@@ -6,10 +6,18 @@
 # Bazel on behalf of the user. Consequently it has some magical (partial) knowledge of Bazel's CLI
 # options since it's really a CLI shim.
 
+# Since this can't run under Bazel, we have to set up the sys.path ourselves
+import os
+import sys
+from pathlib import Path
+
+if (p := str(Path(sys.argv[0]).absolute().parent.parent)) not in sys.path:
+    sys.path.pop(0)  # Remove '.' / ''
+    sys.path.insert(0, p)  # Insert the bazelshim root
+
 from dataclasses import dataclass
 from shlex import quote, split as shlex
 import sys
-import os
 from pathlib import Path
 from typing import List, Optional
 from itertools import chain
@@ -65,6 +73,10 @@ def normalize_opts(args: List[str]) -> List[str]:
             # Convert --no<foo> args to --<foo>=no
             acc.append("--" + args.pop(0).lstrip("--no") + "=false")
 
+        elif args[0] == "--isatty=0":
+            acc.append("--isatty=false")
+            args.pop(0)
+
         elif (
             args[0].startswith("--")
             and not args[1].startswith("--")
@@ -142,9 +154,11 @@ class BazelCli:
             elif self.command == "run":
                 acc.append("--")
                 acc.extend(self.subprocess_opts)
+            elif self.command and not self.subprocess_opts:
+                pass
             else:
                 print(
-                    f"Warning: {self.command} does not support -- args!",
+                    f"Warning: {self.command} does not support -- args! {self.subprocess_opts!r}",
                     file=sys.stderr,
                 )
 
@@ -178,6 +192,7 @@ def middleware(cli):
 
 
 if __name__ == "__main__":
+    # This script has a magical flag to help with resolving bazel
     exclude = []
     while len(sys.argv) > 1 and sys.argv[1].startswith("--bazelshim_exclude"):
         exclude.append(Path(sys.argv.pop(1).split("=")[1]).absolute())
@@ -188,8 +203,9 @@ if __name__ == "__main__":
     cli = BazelCli.parse_cli(["bazel"] + sys.argv[1:])
     cli = middleware(cli)
     next = cli.executable(exclude=exclude)
-    print(
-        "Info: Executing\n" + cli.render_text(next),
-        file=sys.stderr,
-    )
+    if sys.stderr.isatty() and not "--isatty=false" in cli.command_opts:
+        print(
+            "\u001b[33mInfo\u001b[0m: Executing\n" + cli.render_text(next),
+            file=sys.stderr,
+        )
     os.execv(next, cli.render_cli())