some projects don't like ccache

rainboard/migrations/0049_project_ccache.py

+# Generated by Django 3.0.9 on 2020-08-05 22:27
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('rainboard', '0048_namespace_from_gepetto'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='project',
+            name='ccache',
+            field=models.BooleanField(default=True),
+        ),
+    ]

rainboard/models.py

@@ -3,8 +3,6 @@ import logging
 import re
 from subprocess import check_output
 
-import git
-import requests
 from django.conf import settings
 from django.db import models
 from django.db.models import Q
@@ -14,6 +12,9 @@ from django.utils import timezone
 from django.utils.dateparse import parse_datetime
 from django.utils.safestring import mark_safe
 
+import requests
+
+import git
 from autoslug import AutoSlugField
 from autoslug.utils import slugify
 from github import Github
@@ -207,6 +208,7 @@ class Project(Links, NamedModel, TimeStampedModel):
     allow_format_failure = models.BooleanField(default=True)
     has_python = models.BooleanField(default=True)
     accept_pr_to_master = models.BooleanField(default=False)
+    ccache = models.BooleanField(default=True)
 
     def save(self, *args, **kwargs):
         self.name = valid_name(self.name)
@@ -1253,7 +1255,7 @@ def to_release_in_robotpkg():
 
 def ordered_projects():
     """ helper for gepetto/buildfarm/generate_all.py """
-    fields = 'category', 'name', 'project__main_namespace__slug'
+    fields = 'category', 'name', 'project__main_namespace__slug', 'project__ccache'
     bad_ones = Q(main_namespace__from_gepetto=False) | Q(robotpkg__isnull=True) | Q(archived=True)
     library_bad_ones = Q(library__main_namespace__from_gepetto=False) | Q(library__robotpkg__isnull=True)
 
@@ -1290,4 +1292,4 @@ def ordered_projects():
             deps.append(pkg[3:])
         return sorted(set(deps))
 
-    return [[cat, pkg, ns, get_deps(cat, pkg, ns, lst)] for cat, pkg, ns in lst]
+    return [[cat, pkg, ns, get_deps(cat, pkg, ns, lst), ccache] for cat, pkg, ns, ccache in lst]

rainboard/templates/rainboard/gitlab-ci.yml

 # https://rainboard.laas.fr/project/{{ project.slug }}/.gitlab-ci.yml
 
-variables:
+{% if project.ccache %}variables:
   CCACHE_BASEDIR: "${CI_PROJECT_DIR}"
 
 cache:
   paths:
     - ccache
+{% endif %}
 
 {% for robotpkg in project.ordered_robotpkg %}.robotpkg-{{ robotpkg }}: &robotpkg-{{ robotpkg }}
   retry:
@@ -14,9 +15,9 @@ cache:
   except:
     - gh-pages
   script:
-    - mkdir -p ccache
+{% if project.ccache %}    - mkdir -p ccache
     - echo "CCACHE_DIR=${CI_PROJECT_DIR}/ccache" >> /opt/openrobots/etc/robotpkg.conf
-
+{% endif %}
     - cd /root/robotpkg/{{ robotpkg.category }}
     - git pull
 {% if robotpkg.without_py %}    - cd {{ robotpkg.without_py }}