Add command line option for develop

3 files changed, 16 insertions, 5 deletions

diff --git a/tests/test_z_cmdline.py b/tests/test_z_cmdline.py
index b45cab4..139f232 100644
--- a/tests/test_z_cmdline.py
+++ b/tests/test_z_cmdline.py
@@ -359,7 +359,14 @@ def test_test_simple(cmd, initproj):
     ])
 
 
-def test_test_develop(cmd, initproj):
+def test_develop(initproj, cmd):
+    initproj("example123", filedefs={'tox.ini': """
+    """})
+    result = cmd.run("tox", "-v", "--develop")
+    assert not result.ret
+    assert "sdist-make" not in result.stdout.str()
+
+def test_test_usedevelop(cmd, initproj):
     initproj("example123-0.5", filedefs={
         'tests': {'test_hello.py': """
             def test_hello(pytestconfig):
@@ -376,12 +383,13 @@ def test_test_develop(cmd, initproj):
             deps=pytest
         '''
     })
-    result = cmd.run("tox")
+    result = cmd.run("tox", "-v")
     assert not result.ret
     result.stdout.fnmatch_lines([
         "*junit-python.xml*",
         "*1 passed*",
     ])
+    assert "sdist-make" not in result.stdout.str()
     result = cmd.run("tox", "-epython", )
     assert not result.ret
     result.stdout.fnmatch_lines([
diff --git a/tox/_cmdline.py b/tox/_cmdline.py
index d3fce4d..3553a20 100644
--- a/tox/_cmdline.py
+++ b/tox/_cmdline.py
@@ -391,7 +391,7 @@ class Session:
             return
         for venv in self.venvlist:
             if self.setupenv(venv):
-                if self.config.usedevelop:
+                if self.config.usedevelop or self.config.option.develop:
                     self.developpkg(venv, self.config.setupdir)
                 elif self.config.skipsdist:
                     self.finishvenv(venv)
diff --git a/tox/_config.py b/tox/_config.py
index d6e39e4..2d34b50 100644
--- a/tox/_config.py
+++ b/tox/_config.py
@@ -90,6 +90,8 @@ def prepare_parse(pkgname):
         help="skip invoking test commands.")
     parser.add_argument("--sdistonly", action="store_true", dest="sdistonly",
         help="only perform the sdist packaging activity.")
+    parser.add_argument("--develop", action="store_true", dest="develop",
+        help="install package in the venv using setup.py develop")
     parser.add_argument("--installpkg", action="store", default=None,
         help="use specified package for installation into venv")
     parser.add_argument('-i', action="append",
@@ -195,8 +197,9 @@ class parseini:
         config.toxworkdir = reader.getpath(toxsection, "toxworkdir",
                                            "{toxinidir}/.tox")
         config.usedevelop = reader.getbool(toxsection, "usedevelop", False)
-        config.skipsdist = reader.getbool(
-            toxsection, "skipsdist", config.usedevelop)
+        config.skipsdist = reader.getbool(toxsection, "skipsdist",
+                                          config.usedevelop
+                                          or config.option.develop)
         config.minversion = reader.getdefault(toxsection, "minversion", None)
 
         # determine indexserver dictionary