hooks: only check for require_poetry in env config

tox_poetry_installer/hooks.py

@@ -93,8 +93,9 @@ def tox_on_install(
     try:
         poetry = utilities.check_preconditions(tox_env)
     except exceptions.SkipEnvironment as err:
-        if isinstance(err, exceptions.PoetryNotInstalledError) and (
+        if (
-            tox_env.core["require_poetry"] or tox_env.conf["require_poetry"]
+            isinstance(err, exceptions.PoetryNotInstalledError)
+            and tox_env.conf["require_poetry"]
         ):
             logger.error(str(err))
             raise err
@@ -140,19 +141,13 @@ def tox_on_install(
             f"Identified {len(env_deps)} environment dependencies to install to env"
         )
 
-        install_project_deps = (
-            tox_env.conf["install_project_deps"]
-            if tox_env.conf["install_project_deps"] is not None
-            else (not tox_env.conf["skip_install"] and not tox_env.core["no_package"])
-        )
-
         # extras are not set in a testenv if skip_install=true
         try:
             extras = tox_env.conf["extras"]
         except KeyError:
             extras = []
 
-        if install_project_deps:
+        if tox_env.conf["install_project_deps"]:
             project_deps = utilities.find_project_deps(
                 packages, virtualenv, poetry, extras
             )
@@ -166,7 +161,6 @@ def tox_on_install(
         logger.error(str(err))
         raise err
     except Exception as err:
-        # tox_env.status = "InternalError"
         logger.error(f"Internal plugin error: {err}")
         raise err