ci: Build a wheel for taiga-back too

Now that the project has a `setup.py` script, we can build and publish a
wheel for it, making deployment a lot simpler.

ci/Dockerfile

@@ -0,0 +1,12 @@
+FROM fedora:28
+
+RUN useradd -M -l -u 3000018 jenkins
+RUN dnf install -y \
+	gcc \
+	git \
+	libjpeg-devel \
+	openssh-clients \
+	python3-devel \
+	rsync \
+	zlib-devel \
+	--

ci/Jenkinsfile

@@ -0,0 +1,34 @@
+pipeline {
+    agent {
+        dockerfile {
+            dir 'ci'
+            args '-v /etc/ssh/ssh_known_hosts:/etc/ssh/ssh_known_hosts:ro'
+        }
+    }
+
+    triggers {
+        pollSCM ''
+    }
+
+    environment {
+        PUBLISH_HOST = 'file0.pyrocufflink.blue'
+        XDG_CACHE_HOME = "${WORKSPACE}"
+    }
+
+    stages {
+        stage('Build') {
+            steps {
+               sh '. ci/build.sh' 
+            }
+        }
+
+        stage('Publish') {
+            steps {
+                sshagent(['jenkins-sftp']) {
+                    sh '. ci/publish.sh'
+                }
+            }
+        }
+    }
+
+}

ci/build.sh

@@ -0,0 +1,8 @@
+rm -rf .venv
+python3.6 -m venv .venv
+
+rm -rf dist
+.venv/bin/pip install --upgrade pip setuptools wheel
+.venv/bin/pip wheel -w dist -r requirements.txt .
+
+sed -i '/^-i/d' requirements.txt

ci/publish.sh

@@ -0,0 +1,9 @@
+: ${PUBLISH_PATH:=/var/lib/wheels/taiga}
+
+rsync -rtiO \
+	--delete \
+	--include '*.whl' \
+	--include requirements.txt \
+	dist/ \
+	requirements.txt \
+	${PUBLISH_HOST}:${PUBLISH_PATH%/}/

setup.py

@@ -0,0 +1,15 @@
+from setuptools import find_packages, setup
+
+setup(
+    name='taiga-back',
+    use_scm_version=True,
+    description='taiga-back',
+    url='https://taiga.io/',
+    license='GPL-3',
+    packages=find_packages(
+        exclude=['tests', 'tests.*'],
+    ),
+    setup_requires=[
+        'setuptools_scm',
+    ],
+)

taiga/base/filters.py

@@ -515,13 +515,8 @@ class TagsFilter(FilterBackend):
     def _prepare_filter_query(self, query):
         return Q(tags__contains=query)
 
-    def _prepare_exclude_query(self, tags):
-        queries = [Q(tags__contains=[tag]) for tag in tags]
-        query = queries.pop()
-        for item in queries:
-            query |= item
-
-        return ~Q(query)
+    def _prepare_exclude_query(self, query):
+        return ~Q(tags__contains=query)
 
     def filter_queryset(self, request, queryset, view):
         operations = {

tests/integration/test_issues.py

@@ -476,18 +476,6 @@ def test_api_filters(client, filter_name, collection, expected, exclude_expected
     assert len(response.data) == exclude_expected
 
 
-def test_mulitple_exclude_filter_tags(client):
-    data = create_filter_issues_context()
-    project = data["project"]
-    client.login(data["users"][0])
-    tags = data["tags"]
-
-    url = "{}?project={}&exclude_tags={},{}".format(reverse('issues-list'), project.id, tags[1], tags[2])
-    response = client.get(url)
-    assert response.status_code == 200
-    assert len(response.data) == 4
-
-
 def test_api_filters_data(client):
     data = create_filter_issues_context()
     project = data["project"]