Split out build system.

ognibuild/__init__.py

@@ -24,10 +24,6 @@ import sys
 DEFAULT_PYTHON = 'python3'
 
 
-class NoBuildToolsFound(Exception):
-    """No supported build tools were found."""
-
-
 class DetailedFailure(Exception):
 
     def __init__(self, retcode, argv, error):

ognibuild/buildsystem.py

@@ -0,0 +1,39 @@
+#!/usr/bin/python
+# Copyright (C) 2019-2020 Jelmer Vernooij <jelmer@jelmer.uk>
+# encoding: utf-8
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+
+
+import logging
+
+
+class NoBuildToolsFound(Exception):
+    """No supported build tools were found."""
+
+
+class BuildSystem(object):
+    """A particular buildsystem."""
+
+    def __init__(self, session):
+        self.session = session
+
+    def dist(self):
+        raise NotImplementedError(self.dist)
+
+
+def detect_buildsystems(session):
+    """Detect build systems."""
+    return []

ognibuild/dist.py

@@ -33,6 +33,7 @@ from breezy.workingtree import WorkingTree
 from breezy.plugins.debian.repack_tarball import get_filetype
 
 from . import apt, DetailedFailure, shebang_binary
+from .buildsystem import detect_buildsystems
 from .session import run_with_tee, Session
 from .session.schroot import SchrootSession
 from .debian.fix_build import (
@@ -141,10 +142,6 @@ def run_with_build_fixer(session: Session, args: List[str]):
         fixed_errors.append(error)
 
 
-class NoBuildToolsFound(Exception):
-    """No supported build tools were found."""
-
-
 def run_dist(session):
     apt.install(session, ['git'])
 
@@ -152,6 +149,10 @@ def run_dist(session):
     # e.g. pip caches in ~/.cache
     session.create_home()
 
+    for buildsystem in detect_buildsystems(session):
+        buildsystem.dist()
+        return
+
     if os.path.exists('package.xml'):
         apt.install(session, ['php-pear', 'php-horde-core'])
         logging.info('Found package.xml, assuming pear package.')