add support for setting skip_missing_interpreters as a config option and not just a command line flag

5 files changed, 22 insertions, 1 deletions

diff --git a/CHANGELOG b/CHANGELOG
index 73408b3..b4e7155 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -7,7 +7,8 @@ development
   resulting in a more refined behaviour in the 1.8 series.
   And thanks to Clark Boylan for the PR.
 
-- fix issue59: add option "--skip-missing-interpreters" which won't fail the
+- fix issue59: add a config variable ``skip-missing-interpreters`` as well as
+  command line option ``--skip-missing-interpreters`` which won't fail the
   build if Python interpreters listed in tox.ini are missing.  Thanks 
   Alexandre Conrad for PR104.
 
diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index 25c7788..d10950b 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -27,3 +27,4 @@ Alexandre Conrad
 Morgan Fainberg
 Marc Schlaich
 Clark Boylan
+Eugene Yunak
diff --git a/doc/config.txt b/doc/config.txt
index a6ca4c8..fd7f79f 100644
--- a/doc/config.txt
+++ b/doc/config.txt
@@ -22,6 +22,7 @@ List of optional global options::
     distshare=path    # defaults to {homedir}/.tox/distshare
     envlist=ENVLIST   # defaults to the list of all environments
     skipsdist=BOOL    # defaults to false
+    skip_missing_interpreters=BOOL # defaults to false
 
 
 ``tox`` autodetects if it is running in a Jenkins_ context
@@ -32,6 +33,12 @@ and will first lookup global tox settings in this section::
     ...               # override [tox] settings for the jenkins context
     # note: for jenkins distshare defaults to ``{toxworkdir}/distshare``.
 
+Setting ``skip_missing_interpreters`` to ``True`` is equivalent of passing the
+``--skip-missing-interpreters`` command line option, and will force ``tox`` to
+return success even if some of the specified environments were missing. This is
+useful for some CI systems or running on a developer box, where you might only
+have a subset of all your supported interpreters installed but don't want to
+mark the build as failed because of it.
 
 envlist setting
 +++++++++++++++
diff --git a/tests/test_config.py b/tests/test_config.py
index c55f43a..86f93e7 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -943,6 +943,14 @@ class TestGlobalOptions:
         config = newconfig([], inisource)
         assert config.minversion == "3.0"
 
+    def test_skip_missing_interpreters(self, tmpdir, newconfig, monkeypatch):
+        inisource = """
+            [tox]
+            skip_missing_interpreters = True
+        """
+        config = newconfig([], inisource)
+        assert config.option.skip_missing_interpreters
+
     def test_defaultenv_commandline(self, tmpdir, newconfig, monkeypatch):
         config = newconfig(["-epy24"], "")
         env = config.envconfigs['py24']
diff --git a/tox/_config.py b/tox/_config.py
index 0a9dc1a..45d626a 100644
--- a/tox/_config.py
+++ b/tox/_config.py
@@ -239,6 +239,10 @@ class parseini:
                                            "{toxinidir}/.tox")
         config.minversion = reader.getdefault(toxsection, "minversion", None)
 
+        if not config.option.skip_missing_interpreters:
+            config.option.skip_missing_interpreters = \
+                reader.getdefault(toxsection, "skip_missing_interpreters", None)
+
         # determine indexserver dictionary
         config.indexserver = {'default': IndexServerConfig('default')}
         prefix = "indexserver"