build: move pptx package under src/

This improves packaging reliability because it prevents tests from
running against the current directory instead of the installed version
of the package.

Author: scanny

.gitignore

@@ -2,7 +2,7 @@
 .cache
 .coverage
 /.tox/
-*.egg-info
+/src/*.egg-info
 *.pyc
 /dist/
 /docs/.build

MANIFEST.in

@@ -1,5 +1,5 @@
 include HISTORY.rst LICENSE README.rst tox.ini
 recursive-include features *
-recursive-include pptx/templates *
+recursive-include src/pptx/templates *
 recursive-include tests *.py
 recursive-include tests/test_files *

setup.py

@@ -20,7 +20,7 @@ def ascii_bytes_from(path, *paths):
 
 # read required text from files
 thisdir = os.path.dirname(__file__)
-init_py = ascii_bytes_from(thisdir, "pptx", "__init__.py")
+init_py = ascii_bytes_from(thisdir, "src", "pptx", "__init__.py")
 readme = ascii_bytes_from(thisdir, "README.rst")
 history = ascii_bytes_from(thisdir, "HISTORY.rst")
 
@@ -38,7 +38,7 @@ def ascii_bytes_from(path, *paths):
 AUTHOR_EMAIL = "python-pptx@googlegroups.com"
 URL = "https://github.com/scanny/python-pptx"
 LICENSE = "MIT"
-PACKAGES = find_packages(exclude=["tests", "tests.*"])
+PACKAGES = find_packages(where="src")
 PACKAGE_DATA = {"pptx": ["templates/*"]}
 
 INSTALL_REQUIRES = ["lxml>=3.1.0", "Pillow>=3.3.2", "XlsxWriter>=0.5.7"]
@@ -78,6 +78,7 @@ def ascii_bytes_from(path, *paths):
     "license": LICENSE,
     "packages": PACKAGES,
     "package_data": PACKAGE_DATA,
+    "package_dir": {"": "src"},
     "install_requires": INSTALL_REQUIRES,
     "tests_require": TESTS_REQUIRE,
     "test_suite": TEST_SUITE,