package/python-terminaltables: use correct pep517 build backend

We need to migrate python-terminaltables to the pep517 poetry-core
backend as setuptools is not supported when building with a pep517
frontend.

This package currently builds using setuptools as we do not yet
use setuptools with a pep517 build frontend. The package contains
a setuptools fallback which only can be used when using setuptools
without a pep517 frontend as the pep517 frontend will only use the
build backend specified in the package pyproject.toml which is
poetry-core and not setuptools. Thus, specifying setuptools as the build
backend is simply wrong.

The current release of python-terminaltables still uses poetry rather
than poetry-core as a build backend. poetry is much more heavyweight, it
would need to pull in a large number of build dependencies. Therefore,
include an upstream patch to switch from poetry to poetry-core.

Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
[Arnout: use a patch instead of sed]
Signed-off-by: Arnout Vandecappelle <arnout@mind.be>

package/python-terminaltables/0001-switch-build-backend-to-poetry-core.patch

@@ -0,0 +1,28 @@
+From 9e3dda0efb54fee6934c744a13a7336d24c6e9e9 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Micha=C5=82=20G=C3=B3rny?= <mgorny@gentoo.org>
+Date: Thu, 27 Jan 2022 10:33:08 +0100
+Subject: [PATCH] Switch build-backend to poetry-core
+
+poetry-core is the lightweight counterpart of poetry that is intended
+to be used as a build-backend.  Unlike poetry, it does not require
+installing all the dependencies of the package manager, making
+the builds much faster.  The generated artifacts are the same.
+
+Upstream: https://github.com/matthewdeanmartin/terminaltables/commit/9e3dda0efb54fee6934c744a13a7336d24c6e9e9
+Signed-off-by: Arnout Vandecappelle <arnout@mind.be>
+---
+ pyproject.toml     | 4 ++--
+ 2 files changed, 4 insertions(+), 4 deletions(-)
+
+diff --git a/pyproject.toml b/pyproject.toml
+index a861add..ff4b190 100644
+--- a/pyproject.toml
++++ b/pyproject.toml
+@@ -62,5 +62,5 @@ python = ">=2.6 || >=3.0"
+ pytest = "==6.0.1"
+ 
+ [build-system]
+-requires = ["poetry>=0.12"]
+-build-backend = "poetry.masonry.api"
++requires = ["poetry-core>=1.0.0"]
++build-backend = "poetry.core.masonry.api"

package/python-terminaltables/python-terminaltables.mk

@@ -7,8 +7,9 @@
 PYTHON_TERMINALTABLES_VERSION = 3.1.10
 PYTHON_TERMINALTABLES_SOURCE = terminaltables-$(PYTHON_TERMINALTABLES_VERSION).tar.gz
 PYTHON_TERMINALTABLES_SITE = https://files.pythonhosted.org/packages/f5/fc/0b73d782f5ab7feba8d007573a3773c58255f223c5940a7b7085f02153c3
-PYTHON_TERMINALTABLES_SETUP_TYPE = setuptools
+PYTHON_TERMINALTABLES_SETUP_TYPE = pep517
 PYTHON_TERMINALTABLES_LICENSE = MIT
 PYTHON_TERMINALTABLES_LICENSE_FILES = LICENSE
+PYTHON_TERMINALTABLES_DEPENDENCIES = host-python-poetry-core
 
 $(eval $(python-package))