Respect git's export-ignore for building the sdist.

Implemented by replacing the call to 'git ls-files' to '$sys.executable
-msetuptools_scm.git' with the module parsing the output of 'git
archive' as a tar file.

Author: anntzer

.gitignore

@@ -6,6 +6,9 @@
 ## Directory-based project format:
 .idea/
 
+### Other editors
+.*.swp
+
 
 ### Python template
 # Byte-compiled / optimized

setuptools_scm/git.py

@@ -1,9 +1,17 @@
 from .utils import do_ex, trace, has_command, _normalized
 from .version import meta
+try:
+    from io import BytesIO
+except ImportError:
+    from cStringIO import StringIO as BytesIO
+
 from os.path import isfile, join
+import subprocess
+import sys
+from tarfile import TarFile
 import warnings
 
-FILES_COMMAND = 'git ls-files'
+FILES_COMMAND = sys.executable + ' -msetuptools_scm.git'
 DEFAULT_DESCRIBE = 'git describe --dirty --tags --long --match *.*'
 
 
@@ -110,3 +118,16 @@ def parse(root, describe_command=DEFAULT_DESCRIBE, pre_parse=warn_on_shallow):
         return meta(tag, distance=number, node=node, dirty=dirty)
     else:
         return meta(tag, node=node, dirty=dirty)
+
+
+def _main():
+    """List the files that 'git archive' wants.
+    """
+    # TarFile wants a seekable stream.
+    stream = BytesIO(subprocess.check_output(['git', 'archive', 'HEAD']))
+    for name in TarFile(fileobj=stream).getnames():
+        print(name)
+
+
+if __name__ == "__main__":
+    _main()

testing/test_git.py

@@ -112,3 +112,15 @@ def test_alphanumeric_tags_match(wd):
     wd.commit_testfile()
     wd('git tag newstyle-development-started')
     assert wd.version.startswith('0.1.dev1+g')
+
+
+def test_git_archive_export_ignore(wd):
+    wd.write('test1.txt', 'test')
+    wd.write('test2.txt', 'test')
+    wd.write('.git/info/attributes',
+             # Explicitly include test1.txt so that the test is not affected by
+             # a potentially global gitattributes file on the test machine.
+             '/test1.txt -export-ignore\n/test2.txt export-ignore')
+    wd('git add test1.txt test2.txt')
+    wd.commit()
+    assert integration.find_files(str(wd.cwd)) == ['test1.txt']