Description
Note this is a follow-on from the same effort which produced #1012, but I think the bugs are independent. I switched to Python 3 and the CrystaxNDK in an attempt to avoid NDK build errors, and got far enough to run into this.
While the dist's build.py is building its tar archive, I get ValueError("overflow in number field"):
Traceback (most recent call last):
File "/usr/local/bin/p4a", line 11, in <module>
sys.exit(main())
File "/usr/local/lib/python3.5/site-packages/pythonforandroid/toolchain.py", line 754, in main
ToolchainCL()
File "/usr/local/lib/python3.5/site-packages/pythonforandroid/toolchain.py", line 343, in __init__
getattr(self, command_method_name)(unknown)
File "/usr/local/lib/python3.5/site-packages/pythonforandroid/toolchain.py", line 94, in wrapper_func
func(self, args)
File "/usr/local/lib/python3.5/site-packages/pythonforandroid/toolchain.py", line 589, in apk
build_args = build.parse_args(args)
File "/Users/testuser/.python-for-android/dists/unnamed_dist_1/build.py", line 488, in parse_args
make_package(args)
File "/Users/testuser/.python-for-android/dists/unnamed_dist_1/build.py", line 248, in make_package
make_tar('assets/private.mp3', tar_dirs, args.ignore_path)
File "/Users/testuser/.python-for-android/dists/unnamed_dist_1/build.py", line 197, in make_tar
tf.add(fn, afn)
File "/usr/local/Cellar/python3/3.5.2_3/Frameworks/Python.framework/Versions/3.5/lib/python3.5/tarfile.py", line 1938, in add
self.addfile(tarinfo, f)
File "/usr/local/Cellar/python3/3.5.2_3/Frameworks/Python.framework/Versions/3.5/lib/python3.5/tarfile.py", line 1960, in addfile
buf = tarinfo.tobuf(self.format, self.encoding, self.errors)
File "/usr/local/Cellar/python3/3.5.2_3/Frameworks/Python.framework/Versions/3.5/lib/python3.5/tarfile.py", line 802, in tobuf
return self.create_ustar_header(info, encoding, errors)
File "/usr/local/Cellar/python3/3.5.2_3/Frameworks/Python.framework/Versions/3.5/lib/python3.5/tarfile.py", line 821, in create_ustar_header
return self._create_header(info, USTAR_FORMAT, encoding, errors)
File "/usr/local/Cellar/python3/3.5.2_3/Frameworks/Python.framework/Versions/3.5/lib/python3.5/tarfile.py", line 916, in _create_header
itn(info.get("uid", 0), 8, format),
File "/usr/local/Cellar/python3/3.5.2_3/Frameworks/Python.framework/Versions/3.5/lib/python3.5/tarfile.py", line 211, in itn
raise ValueError("overflow in number field")
ValueError: overflow in number field
It seems the overflow is in the "uid" field, and I notice that my UID on my Mac (part of a corporate domain) is pretty high at 1730938684. Looking at the package in tarfile.py it seems this is a limitation of the USTAR format which the python-4-android builder is selecting specifically. The default GNU format can support much larger numbers, though I presume the unpacking code used in the Android package might not support it?
I was able to work around this problem by running as a different local user account, so long as that account owns both the .python-for-android directory and the source input directory.
Since UID information isn't relevant when unpacking on Android it would be nice to discard it and make this not matter, if using the GNU tar format isn't an option. It doesn't look like the tarfile package gives the ability to do this directly, but you could chmod all the files to root (in a temporary location) before compressing them.