Bug#743583: python3-gi fails to install on arm64 (struct.error from py3compile)

[wookey]

Package: python3-gi
Version: 3.10.2-2
Severity: normal

When you install the python3-gi package from 
http://people.debian.org/~wookey/bootstrap/debianrepo2/pool/main/p/pygobject/python3-gi_3.10.2-2_arm64.deb

it fails with:

Setting up python3-gi (3.10.2-2) ...
Traceback (most recent call last):
  File "/usr/bin/py3compile", line 290, in <module>
    main()
  File "/usr/bin/py3compile", line 270, in main
    options.force, options.optimize, e_patterns)
  File "/usr/bin/py3compile", line 172, in compile
    interpreter.magic_number(version), mtime)
struct.error: 'l' format requires -2147483648 <= number <= 2147483647
dpkg: error processing package python3-gi (--configure):
 subprocess installed post-installation script returned error exit status 1

So that's this line in the postinst failing:
py3compile -p python3-gi

Any clues on what to look at for the cause of this problem would be welcome.


-- System Information:
Debian Release: Unstable
  APT prefers stable
  APT policy: (500, 'unstable')
Architecture: arm64 (aarch64)

Kernel: Linux 3.12.0-mustang_sw_1.11.09-beta (SMP w/8 CPU cores)
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/dash