termux-packages/packages/python-pip/install_py_preventing_pip_from_installing.patch

diff -uNr pip-22.3.1/src/pip/_internal/commands/install.py pip-22.3.1/src/pip/_internal/commands/install.py.patch
--- pip-22.3.1/src/pip/_internal/commands/install.py	2022-11-05 18:25:43.000000000 +0300
+++ pip-22.3.1/src/pip/_internal/commands/install.py.patch	2023-01-11 22:55:38.943540197 +0300
@@ -346,6 +346,22 @@
                 options, reqs, LegacySetupPyOptionsCheckMode.INSTALL
             )
 
+            # This prevents updating pip via pip, which is necessary as it breaks
+            # the python-pip package in termux.
+            # https://github.com/termux/termux-packages/pull/13611#issuecomment-1336105506
+            for req in reqs:
+                if req.name == "pip":
+                    reqs.remove(req)
+                    if len(reqs) == 0:
+                        raise CommandError(
+                            "Installing pip is forbidden, this will break the python-pip package (termux)."
+                        )
+                    else:
+                        logger.warning(
+                            "Skip installing pip, this will break the python-pip package (termux)."
+                        )
+                    break
+
             if "no-binary-enable-wheel-cache" in options.features_enabled:
                 # TODO: remove format_control from WheelCache when the deprecation cycle
                 # is over