tests/test-check-py3-compat.t

inno: script to automate building Inno installer

The official Inno installer build process is poorly documented.
And attempting to reproduce behavior of the installer uploaded
to www.mercurial-scm.org has revealed a number of unexpected
behaviors.

This commit attempts to improve the state of reproducibility
of the Inno installer by introducing a Python script to
largely automate the building of the installer.

The new script (which must be run from an environment with the
Visual C++ environment configured) takes care of producing an
Inno installer. When run from a fresh Mercurial source checkout
with all the proper system dependencies (the VC++ toolchain,
Windows 10 SDK, and Inno tools) installed, it "just works."
The script takes care of downloading all the Python
dependencies in a secure manner and manages the build
environment for you. You don't need any additional config
files: just launch the script, pointing it at an existing
Python and ISCC binary and it takes care of the rest.

The produced installer creates a Mercurial installation with
a handful of differences from the existing 4.9 installers
(produced by someone else):

* add_path.exe is missing (this was removed a few changesets ago)
* The set of api-ms-win-core-* DLLs is different (I suspect this
  is due to me using a different UCRT / Windows version).
* kernelbase.dll and msasn1.dll are missing.
* There are a different set of .pyc files for dulwich,
  keyring, and pygments due to us using the latest versions of
  each.
* We include Tcl/Tk DLLs and .pyc files (I'm not sure why these
  are missing from the existing installers).
* We include the urllib3 and win32ctypes packages (which are
  dependencies of dulwich and pywin32, respectively). I'm not
  sure why these aren't present in the existing installers.
* We include a different set of files for the distutils package.
  I'm not sure why. But it should be harmless.
* We include the docutils package (it is getting picked up as
  a dependency somehow). I think this is fine.
* We include a copy of argparse.pyc. I'm not sure why this was
  missing from existing installers.
* We don't have a copy of sqlite3/dump.pyc. I'm not sure why. The
  SQLite C extension code only imports this module when
  conn.iterdump() is called. It should be safe to omit.
* We include files in the email.test and test packages. The set of
  files is small and their presence should be harmless.

The new script and support code is written in Python 3 because
it is brand new and independent code and I don't believe new
Python projects should be using Python 2 in 2019 if they have
a choice about it.

The readme.txt file has been renamed to readme.rst and overhauled
to reflect the existence of build.py.

Differential Revision: https://phab.mercurial-scm.org/D6066

#require test-repo

  $ . "$TESTDIR/helpers-testrepo.sh"
  $ cd "$TESTDIR"/..

#if no-py3
  $ testrepohg files 'set:(**.py)' \
  > -X contrib/packaging/inno/ \
  > -X contrib/packaging/packagingutil.py \
  > -X hgdemandimport/demandimportpy2.py \
  > -X mercurial/thirdparty/cbor \
  > | sed 's|\\|/|g' | xargs "$PYTHON" contrib/check-py3-compat.py
  contrib/python-zstandard/setup.py not using absolute_import
  contrib/python-zstandard/setup_zstd.py not using absolute_import
  contrib/python-zstandard/tests/common.py not using absolute_import
  contrib/python-zstandard/tests/test_buffer_util.py not using absolute_import
  contrib/python-zstandard/tests/test_compressor.py not using absolute_import
  contrib/python-zstandard/tests/test_compressor_fuzzing.py not using absolute_import
  contrib/python-zstandard/tests/test_data_structures.py not using absolute_import
  contrib/python-zstandard/tests/test_data_structures_fuzzing.py not using absolute_import
  contrib/python-zstandard/tests/test_decompressor.py not using absolute_import
  contrib/python-zstandard/tests/test_decompressor_fuzzing.py not using absolute_import
  contrib/python-zstandard/tests/test_estimate_sizes.py not using absolute_import
  contrib/python-zstandard/tests/test_module_attributes.py not using absolute_import
  contrib/python-zstandard/tests/test_train_dictionary.py not using absolute_import
  setup.py not using absolute_import
#endif

#if py3
  $ testrepohg files 'set:(**.py) - grep(pygments)' \
  > -X hgdemandimport/demandimportpy2.py \
  > -X hgext/fsmonitor/pywatchman \
  > -X mercurial/cffi \
  > -X mercurial/thirdparty \
  > | sed 's|\\|/|g' | xargs "$PYTHON" contrib/check-py3-compat.py \
  > | sed 's/[0-9][0-9]*)$/*)/'
  contrib/python-zstandard/tests/test_compressor.py:324: SyntaxWarning: invalid escape sequence \( (py38 !)
    with self.assertRaisesRegexp(zstd.ZstdError, 'cannot call compress\(\) after compressor'): (py38 !)
  contrib/python-zstandard/tests/test_compressor.py:1329: SyntaxWarning: invalid escape sequence \( (py38 !)
    'cannot call compress\(\) after compression finished'): (py38 !)
  contrib/python-zstandard/tests/test_compressor.py:1341: SyntaxWarning: invalid escape sequence \( (py38 !)
    'cannot call flush\(\) after compression finished'): (py38 !)
  contrib/python-zstandard/tests/test_compressor.py:1353: SyntaxWarning: invalid escape sequence \( (py38 !)
    'cannot call finish\(\) after compression finished'): (py38 !)
  hgext/convert/transport.py: error importing: <*Error> No module named 'svn.client' (error at transport.py:*) (glob) (?)
  hgext/infinitepush/sqlindexapi.py: error importing: <*Error> No module named 'mysql' (error at sqlindexapi.py:*) (glob) (?)
  mercurial/scmwindows.py: error importing: <ValueError> _type_ 'v' not supported (error at win32.py:*) (no-windows !)
  mercurial/win32.py: error importing: <ValueError> _type_ 'v' not supported (error at win32.py:*) (no-windows !)
  mercurial/windows.py: error importing: <ModuleNotFoundError> No module named 'msvcrt' (error at windows.py:*) (no-windows !)
  mercurial/posix.py: error importing: <ModuleNotFoundError> No module named 'fcntl' (error at posix.py:*) (windows !)
  mercurial/scmposix.py: error importing: <ModuleNotFoundError> No module named 'fcntl' (error at scmposix.py:*) (windows !)
#endif

#if py3 pygments
  $ testrepohg files 'set:(**.py) and grep(pygments)' | sed 's|\\|/|g' \
  > | xargs "$PYTHON" contrib/check-py3-compat.py \
  > | sed 's/[0-9][0-9]*)$/*)/'
#endif