python: add devel package requirements to setuptools

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>

1 files changed, 1 insertions, 4 deletions

diff --git a/python/Pipfile b/python/Pipfile
index dbe96f71c4..e7acb8cefa 100644
--- a/python/Pipfile
+++ b/python/Pipfile
@@ -4,10 +4,7 @@ url = "https://pypi.org/simple"
 verify_ssl = true
 
 [dev-packages]
-flake8 = ">=3.6.0"
-isort = ">=5.1.2"
-mypy = ">=0.770"
-pylint = ">=2.8.0"
+qemu = {editable = true, extras = ["devel"], path = "."}
 
 [packages]
 qemu = {editable = true,path = "."}