tox: Disable pip cache for coala venv

Some packages required by coala venv are already cached by pip2,
leading to issues like [1] when trying to install them for pip3.
Bypass the pip cache in order to avoid this.

[1] https://github.com/pypa/pip/issues/5250

Change-Id: I9e8ce52223cdc84d855cc8fe899efa6e22b84ab9
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/tox.ini b/tox.ini
index 1e35c7a..44ad8e0 100644 (file)
--- a/tox.ini
+++ b/tox.ini
@@ -28,10 +28,11 @@ commands = sphinx-build -b linkcheck -d {envtmpdir}/doctrees ./docs/ {toxinidir}
 
 [testenv:coala]
 basepython = python3
+install_command = python -m pip install --no-cache-dir {opts} {packages}
 whitelist_externals = rm
 deps =
     coala
     coala-bears
 commands =
-   rm -rf src/use_cases/seba_on_arm/src_repo/
-   coala --non-interactive
+    rm -rf src/use_cases/seba_on_arm/src_repo/
+    coala --non-interactive