dev-python/pykwalify: Fix tests, modernize, py3.8

Thanks to Marek Szuba for pointing out the patches.

Closes: https://bugs.gentoo.org/718938
Signed-off-by: Michał Górny <mgorny@gentoo.org>

dev-python/pykwalify/files/pykwalify-1.7.0-test.patch

@@ -0,0 +1,48 @@
+From 744816a146e567a4c1efd30e874ff76134754fe2 Mon Sep 17 00:00:00 2001
+From: Grokzen <Grokzen@gmail.com>
+Date: Wed, 9 Oct 2019 23:25:59 +0200
+Subject: [PATCH] Fix broken test where errors data was wrong and duplicated
+
+---
+ tests/files/fail/test_type_float.yaml | 2 --
+ 1 file changed, 2 deletions(-)
+
+diff --git a/tests/files/fail/test_type_float.yaml b/tests/files/fail/test_type_float.yaml
+index bef14b8..972167d 100644
+--- a/tests/files/fail/test_type_float.yaml
++++ b/tests/files/fail/test_type_float.yaml
+@@ -16,8 +16,6 @@ schema:
+   type: seq
+   seq:
+     - type: float
+-errors:
+-  - "Value 'foo' is not of type 'float'. Path: '/0'"
+ errors:
+   - "Value 'True' is not of type 'float'. Path: '/1'"
+   - "Value 'foo' is not of type 'float'. Path: '/0'"
+
+From 49052dd010637e1403c8b2b1c3710926acd2b1a0 Mon Sep 17 00:00:00 2001
+From: Grokzen <Grokzen@gmail.com>
+Date: Wed, 9 Oct 2019 23:21:09 +0200
+Subject: [PATCH] Fixed bug in test_multi_file_support where pytest would raise
+ issue with a option that is no longer supported
+
+---
+ tests/test_core.py | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/tests/test_core.py b/tests/test_core.py
+index 6fcd81e..bd974df 100644
+--- a/tests/test_core.py
++++ b/tests/test_core.py
+@@ -336,7 +336,9 @@ def test_multi_file_support(self):
+             compare(c.root_rule.schema_str, passing_test[2], prefix="Parsed rules is not correct, something have changed...")
+ 
+         for failing_test in failing_tests:
+-            with pytest.raises(failing_test[2], message="Test files: {0} : {1}".format(", ".join(failing_test[0]), failing_test[1])):
++            print("Test files: {0} : {1}".format(", ".join(failing_test[0]), failing_test[1]))
++
++            with pytest.raises(failing_test[2]):
+                 c = Core(schema_files=failing_test[0], source_file=failing_test[1])
+                 c.validate()
+ 

dev-python/pykwalify/pykwalify-1.7.0.ebuild

@@ -3,7 +3,8 @@
 
 EAPI=7
 
-PYTHON_COMPAT=( python3_{6,7} )
+DISTUTILS_USE_SETUPTOOLS=rdepend
+PYTHON_COMPAT=( python3_{6,7,8} )
 
 inherit distutils-r1
 
@@ -14,26 +15,21 @@ SRC_URI="mirror://pypi/${PN:0:1}/${PN}/${P}.tar.gz"
 SLOT="0"
 LICENSE="MIT"
 KEYWORDS="~amd64 ~x86 ~amd64-linux ~x86-linux"
-IUSE="test"
-RESTRICT="!test? ( test )"
 
 RDEPEND="
 	>=dev-python/docopt-0.6.2[${PYTHON_USEDEP}]
 	>=dev-python/pyyaml-3.11[${PYTHON_USEDEP}]
 	>=dev-python/python-dateutil-2.4.2[${PYTHON_USEDEP}]
-	dev-python/setuptools[${PYTHON_USEDEP}]
 "
 DEPEND="
-	dev-python/setuptools[${PYTHON_USEDEP}]
 	test? (
-		${RDEPEND}
-		dev-python/pytest[${PYTHON_USEDEP}]
 		dev-python/testfixtures[${PYTHON_USEDEP}]
 	)
 "
 
-PATCHES=( "${FILESDIR}"/${PN}-1.4.0-S.patch )
+distutils_enable_tests pytest
 
-python_test() {
-	pytest -vv || die
-}
+PATCHES=(
+	"${FILESDIR}"/${PN}-1.4.0-S.patch
+	"${FILESDIR}"/${P}-test.patch
+)