[PATCH v2 4/4] [DO-NOT-MERGE]: Add some ad-hoc linting helpers.

[John Snow <jsnow@redhat.com>]

These aren't ready for upstream inclusion, because they do not properly
manage version dependencies, execution environment and so on. These are
just the tools I use in my Own Special Environment :tm: for testing and
debugging.

I *think*, but can't exhaustively guarantee, that these should
work:

Python >= 3.6
isort >= 5.7.0  (But possibly earlier)
mypy >= 0.770   (Currently using 0.800)
pylint >= 2.6.0 (Currently using 2.7.4)

My python packaging series does a more exhaustive treatment and
exploration of minimum package requirements; eventually these two series
will converge and these dependencies will be handled in one place.

Signed-off-by: John Snow <jsnow@redhat.com>
---
 scripts/qapi-lint.sh  | 29 +++++++++++++++++++++++++++++
 scripts/qapi/Makefile |  5 +++++
 2 files changed, 34 insertions(+)
 create mode 100755 scripts/qapi-lint.sh
 create mode 100644 scripts/qapi/Makefile

diff --git a/scripts/qapi-lint.sh b/scripts/qapi-lint.sh
new file mode 100755
index 00000000000..2c2f2808ca6
--- /dev/null
+++ b/scripts/qapi-lint.sh
@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+set -e
+
+if [[ -f qapi/.flake8 ]]; then
+    echo "flake8 --config=qapi/.flake8 qapi/"
+    flake8 --config=qapi/.flake8 qapi/
+fi
+if [[ -f qapi/pylintrc ]]; then
+    echo "pylint --rcfile=qapi/pylintrc qapi/"
+    pylint --rcfile=qapi/pylintrc qapi/
+fi
+if [[ -f qapi/mypy.ini ]]; then
+    echo "mypy --config-file=qapi/mypy.ini qapi/"
+    mypy --config-file=qapi/mypy.ini qapi/
+fi
+
+if [[ -f qapi/.isort.cfg ]]; then
+    pushd qapi
+    echo "isort -c ."
+    isort -c .
+    popd
+fi
+
+pushd ../bin/git
+make -j9
+make check-qapi-schema
+make docs
+make sphinxdocs
+popd
diff --git a/scripts/qapi/Makefile b/scripts/qapi/Makefile
new file mode 100644
index 00000000000..314e8a5505e
--- /dev/null
+++ b/scripts/qapi/Makefile
@@ -0,0 +1,5 @@
+check:
+	isort -c .
+	flake8 .
+	cd .. && pylint --rcfile=qapi/pylintrc qapi
+	cd .. && mypy -p qapi --config-file=qapi/mypy.ini
-- 
2.30.2