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setuptools doesn't have a formal understanding of development requires,
but it has an optional feataures section. Fine; add a "devel" feature
and add the requirements to it.
To avoid duplication, we can modify pipenv to install qemu[devel]
instead. This enables us to run invocations like "pip install -e
.[devel]" and test the package on bleeding-edge packages beyond those
specified in Pipfile.lock.
Importantly, this also allows us to install the qemu development
packages in a non-networked mode: `pip3 install --no-index -e .[devel]`
will now fail if the proper development dependencies are not already
met. This can be useful for automated build scripts where fetching
network packages may be undesirable.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Message-id: 20210527211715.394144-27-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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This adds the python qemu packages themselves to the pipenv manifest.
'pipenv sync' will create a virtual environment sufficient to use the SDK.
'pipenv sync --dev' will create a virtual environment sufficient to use
and test the SDK (with pylint, mypy, isort, flake8, etc.)
The qemu packages are installed in 'editable' mode; all changes made to
the python package inside the git tree will be reflected in the
installed package without reinstallation. This includes changes made
via git pull and so on.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Tested-by: Cleber Rosa <crosa@redhat.com>
Message-id: 20210527211715.394144-26-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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isort 5.0.0 through 5.0.4 has a bug that causes it to misinterpret
certain "from ..." clauses that are not related to imports.
isort < 5.1.1 has a bug where it does not handle comments near import
statements correctly.
Require 5.1.2 or greater.
isort can be run (in "check" mode) with 'isort -c qemu' from the python
root. isort can also be used to fix/rewrite import order automatically
by using 'isort qemu'.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Message-id: 20210527211715.394144-25-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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0.730 appears to be about the oldest version that works with the
features we want, including nice human readable output (to make sure
iotest 297 passes), and type-parameterized Popen generics.
0.770, however, supports adding 'strict' to the config file, so require
at least 0.770.
Now that we are checking a namespace package, we need to tell mypy to
allow PEP420 namespaces, so modify the mypy config as part of the move.
mypy can now be run from the python root by typing 'mypy -p qemu'.
A note on mypy invocation: Running it as "mypy qemu/" changes the import
path detection mechanisms in mypy slightly, and it will fail. See
https://github.com/python/mypy/issues/8584 for a decent entry point with
more breadcrumbs on the various behaviors that contribute to this subtle
difference.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Tested-by: Cleber Rosa <crosa@redhat.com>
Message-id: 20210527211715.394144-23-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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flake8 3.5.x does not support the --extend-ignore syntax used in the
.flake8 file to gracefully extend default ignores, so 3.6.x is our
minimum requirement. There is no known upper bound.
flake8 can be run from the python/ directory with no arguments.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Tested-by: Cleber Rosa <crosa@redhat.com>
Message-id: 20210527211715.394144-21-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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We are specifying >= pylint 2.8.x for several reasons:
1. For setup.cfg support, added in pylint 2.5.x
2. To specify a version that has incompatibly dropped
bad-whitespace checks (2.6.x)
3. 2.7.x fixes "unsubscriptable" warnings in Python 3.9
4. 2.8.x adds a new, incompatible 'consider-using-with'
warning that must be disabled in some cases.
These pragmas cause warnings themselves in 2.7.x.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Tested-by: Cleber Rosa <crosa@redhat.com>
Message-id: 20210527211715.394144-18-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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pipenv is a tool used for managing virtual environments with pinned,
explicit dependencies. It is used for precisely recreating python
virtual environments.
pipenv uses two files to do this:
(1) Pipfile, which is similar in purpose and scope to what setup.cfg
lists. It specifies the requisite minimum to get a functional
environment for using this package.
(2) Pipfile.lock, which is similar in purpose to `pip freeze >
requirements.txt`. It specifies a canonical virtual environment used for
deployment or testing. This ensures that all users have repeatable
results.
The primary benefit of using this tool is to ensure *rock solid*
repeatable CI results with a known set of packages. Although I endeavor
to support as many versions as I can, the fluid nature of the Python
toolchain often means tailoring code for fairly specific versions.
Note that pipenv is *not* required to install or use this module; this is
purely for the sake of repeatable testing by CI or developers.
Here, a "blank" pipfile is added with no dependencies, but specifies
Python 3.6 for the virtual environment.
Pipfile will specify our version minimums, while Pipfile.lock specifies
an exact loadout of packages that were known to operate correctly. This
latter file provides the real value for easy setup of container images
and CI environments.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Message-id: 20210527211715.394144-15-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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