Fix perf test (#2718)

* Attempt to debug / fix perf test

* Make them subinclude what they need

* some more things

* more fix

* moar fix

tools/performance/gen_parse_tree.py

@@ -47,6 +47,8 @@
 }
 
 LANGUAGE_TEMPLATE = """
+subinclude("///{lang}//build_defs:{lang}")
+
 {lang}_library(
     name = "{name}",
     srcs = glob(["*.{ext}"], exclude=["*_test.{ext}"]),
@@ -123,8 +125,25 @@ def main(argv):
         f.write("""
 [Plugin "java"]
 Target = //plugins:java
-    """)
-        pass
+[Plugin "python"]
+Target = //plugins:python
+[Plugin "cc"]
+Target = //plugins:cc
+TestMain = ///pleasings//cc:unittest_main
+[Plugin "go"]
+Target = //plugins:go
+[parse]
+preloadsubincludes = ///python//build_defs:python
+preloadsubincludes = ///cc//build_defs:cc
+        """)
+    with open(os.path.join(FLAGS.root, 'BUILD.plz'), 'w') as f:
+        f.write("""
+github_repo(
+    name = "pleasings",
+    repo = "thought-machine/pleasings",
+    revision = "v1.1.0",
+)
+        """)
     if FLAGS.format:
         # Format them all up (in chunks to avoid 'argument too long')
         n = 1000

tools/performance/parse_perf_test.py

@@ -41,7 +41,11 @@ def plz() -> list:
 def run(i: int):
     """Run once and return the length of time taken."""
     log.info('Run %d of %d', i + 1, FLAGS.number)
-    duration, mem = parse_time_output(subprocess.run(plz(), check=True, stdout=subprocess.DEVNULL, stderr=subprocess.PIPE).stderr.decode("utf-8"))
+    try :
+        duration, mem = parse_time_output(subprocess.run(plz(), check=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE).stderr.decode("utf-8"))
+    except subprocess.CalledProcessError as err:
+        log.exception('Subprocess failed: ' + err.stderr.decode())
+        raise
     log.info('Complete in %0.2fs, using %d KB', duration, mem)
     return duration, mem