Support building C extensions in benchmarks

Author: mdboom

.gitignore

@@ -10,7 +10,7 @@
 # Created by setup.py sdist
 build/
 dist/
-pyperformance.egg-info/
+*.egg-info/
 
 # Created by the pyperformance script
 venv/

MANIFEST.in

@@ -15,5 +15,6 @@ include pyperformance/data-files/benchmarks/MANIFEST
 include pyperformance/data-files/benchmarks/bm_*/*.toml
 include pyperformance/data-files/benchmarks/bm_*/*.py
 include pyperformance/data-files/benchmarks/bm_*/requirements.txt
+include pyperformance/data-files/benchmarks/bm_*/*.c
 recursive-include pyperformance/data-files/benchmarks/bm_*/data *
 recursive-exclude pyperformance/tests *

pyperformance/_pip.py

@@ -150,7 +150,7 @@ def install_requirements(reqs, *extra,
     if upgrade:
         args.append('-U')  # --upgrade
     for reqs in [reqs, *extra]:
-        if os.path.exists(reqs):
+        if os.path.isfile(reqs):
             args.append('-r')  # --requirement
         args.append(reqs)
     return run_pip('install', *args, **kwargs)

pyperformance/venv.py

@@ -241,6 +241,10 @@ def ensure_reqs(self, requirements=None):
             bench = requirements
             requirements = Requirements.from_benchmarks([bench])
 
+            benchmark_dir = os.path.dirname(bench.metafile)
+            if os.path.isfile(os.path.join(benchmark_dir, "setup.py")):
+                requirements._add(benchmark_dir)
+
         # Every benchmark must depend on pyperf.
         if bench is not None and not requirements.get('pyperf'):
             basereqs = Requirements.from_file(REQUIREMENTS_FILE)