[Python-modules-team] Bug#918683: python-sqlobject: Overly restrictive requires.txt in the sqlobject package

[Neil Muller]

Package: python-sqlobject
Version: 3.7.0+dfsg-1
Severity: normal

Dear Maintainer,

The 3.7 sqlobject package includes an overly restrictive requires.txt
file from upstream, which breaks with the version of formencode
currently in debian when used with setuptools.

The sqlobject disables the use of formencode 1.3.0 to work around an
issue with the wheels produced by that version, but the problem doesn't
apply to the debian version.

When running a local python app using setuptools with the current package,
the restrictions cause the following traceback:

error: Could not find suitable distribution for Requirement.parse('FormEncode!=1.3.0,>=1.1.1')
Traceback (most recent call last):
  File "./test", line 6, in <module>
    from pkg_resources import load_entry_point
  File "/usr/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 3126, in <module>
    @_call_aside
  File "/usr/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 3110, in _call_aside
    f(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 3139, in _initialize_master_working_set
    working_set = WorkingSet._build_master()
  File "/usr/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 583, in _build_master
    return cls._build_from_requirements(__requires__)
  File "/usr/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 596, in _build_from_requirements
    dists = ws.resolve(reqs, Environment())
  File "/usr/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 784, in resolve
    raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'FormEncode!=1.3.0,>=1.1.1' distribution was not found and is required by SQLObject

Lowering the requirement to allow Formencode>=1.3.0 gives a working installation.

-- System Information:
Debian Release: buster/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 4.19.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_ZA.UTF-8, LC_CTYPE=en_ZA.UTF-8 (charmap=UTF-8), LANGUAGE=en_ZA.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages python-sqlobject depends on:
ii  python                2.7.15-3
ii  python-formencode     1.3.0-3
ii  python-pkg-resources  40.6.2-1
ii  python-pydispatch     2.0.5-1

Versions of packages python-sqlobject recommends:
ii  sqlobject-admin  3.7.0+dfsg-1

Versions of packages python-sqlobject suggests:
pn  python-adodb          <none>
ii  python-fdb            1.6.1+dfsg1-1
ii  python-mysqldb        1.3.10-1+b1
ii  python-psycopg2       2.7.6.1-3
pn  python-pymssql        <none>
pn  python-sqlite         <none>
ii  python-sqlobject-doc  3.7.0+dfsg-1

-- debconf-show failed