Fix test for lib command

.travis.yml

@@ -3,11 +3,11 @@ language: python
 matrix:
   include:
     - os: linux
-      sudo: required
+      sudo: false
       python: 2.7
       env: TOX_ENV=docs
     - os: linux
-      sudo: required
+      sudo: false
       python: 2.7
       env: TOX_ENV=lint
     - os: linux
@@ -20,17 +20,17 @@ matrix:
 
 install:
   - git submodule update --init --recursive
-  - sudo pip install -U pip setuptools tox
+  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then sudo pip install -U tox; else pip install -U tox; fi
 
   # temporary hook to fix issue with gcc-pic32
-  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sudo apt-get install -qq lib32z1 lib32ncurses5 lib32bz2-1.0; fi
+  - if [[ "$TOX_ENV" == "py27" ]] && [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sudo apt-get install -qq lib32z1 lib32ncurses5 lib32bz2-1.0; fi
 
 script:
   - tox -e $TOX_ENV
 
 after_success:
-  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then tox -e coverage; fi
-  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then bash <(curl -s https://codecov.io/bash); fi
+  - if [[ "$TOX_ENV" == "py27" ]] && [[ "$TRAVIS_OS_NAME" == "linux" ]]; then tox -e coverage; fi
+  - if [[ "$TOX_ENV" == "py27" ]] && [[ "$TRAVIS_OS_NAME" == "linux" ]]; then bash <(curl -s https://codecov.io/bash); fi
 
 notifications:
   slack: