Use -r if we resolve [] as runtime deps

A package may provide a requires file rather than setting install_requires

1 files changed, 15 insertions, 4 deletions

diff --git a/exts/pip.find_deps b/exts/pip.find_deps
index 0a2f24d..c591149 100755
--- a/exts/pip.find_deps
+++ b/exts/pip.find_deps
@@ -251,7 +251,7 @@ def find_build_deps(source, name, version=None):
 
     return build_deps
 
-def find_runtime_deps(source, name, version=None):
+def find_runtime_deps(source, name, version=None, use_requirements_file=False):
     logging.debug('Finding runtime dependencies for %s%s at %s'
                   % (name, ' %s' % version if version else '', source))
 
@@ -262,9 +262,15 @@ def find_runtime_deps(source, name, version=None):
     tmpfd, tmppath = tempfile.mkstemp()
     logging.debug('Writing install requirements to: %s', tmppath)
 
-    p = subprocess.Popen(['pip', 'install', '.',
-                            '--list-dependencies=%s' % tmppath], cwd=source,
-                            stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+    args = ['pip', 'install', '.', '--list-dependencies=%s' % tmppath]
+    if use_requirements_file:
+        args.insert(args.index('.') + 1, '-r')
+        args.insert(args.index('.') + 2, 'requirements.txt')
+
+    logging.debug('Running pip, args: %s' % args)
+
+    p = subprocess.Popen(args, cwd=source, stdout=subprocess.PIPE,
+                         stderr=subprocess.STDOUT)
 
     while True:
         line = p.stdout.readline()
@@ -298,6 +304,11 @@ def find_runtime_deps(source, name, version=None):
 
     os.remove(tmppath)
 
+    if (len(runtime_deps) == 0 and not use_requirements_file
+            and os.path.isfile(os.path.join(source, 'requirements.txt'))):
+        return find_runtime_deps(source, name, version,
+                                 use_requirements_file=True)
+
     return runtime_deps
 
 def main():