diff --git a/.travis.yml b/.travis.yml
index edce95dfdc3..b39eaefc5b5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -55,6 +55,7 @@ addons:
   apt:
     packages:
     - clang
+    - graphviz
 
 
 
@@ -83,6 +84,7 @@ before_install:
 install:
    - cd $TRAVIS_BUILD_DIR
    - conda env create -f tardis_env27.yml
+   - conda install -y -c conda-forge graphviz=2.38.0 xorg-libxrender xorg-libxpm
    - source activate tardis
 
 script:
diff --git a/setup.cfg b/setup.cfg
index 3558253173b..8ecf124df68 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -7,7 +7,7 @@ all_files = 1
 upload-dir = docs/_build/html
 show-response = 1
 
-[pytest]
+[tool:pytest]
 minversion = 2.2
 norecursedirs = build docs/_build
 
diff --git a/setup.py b/setup.py
index ba47ae50217..14ac28ed7cc 100755
--- a/setup.py
+++ b/setup.py
@@ -73,10 +73,6 @@
 add_command_option('develop', 'with-vpacket-logging', 'compile TARDIS with virtual packet logging',
                    is_bool=True)
 
-# Adjust the compiler in case the default on this platform is to use a
-# broken one.
-adjust_compiler(PACKAGENAME)
-
 # Freeze build information in version.py
 generate_version_py(PACKAGENAME, VERSION, RELEASE,
                     get_debug_option(PACKAGENAME))
@@ -141,4 +137,3 @@
       entry_points=entry_points,
       **package_info
 )
-
diff --git a/tardis/plasma/tests/test_plasma_dot_tex.py b/tardis/plasma/tests/test_plasma_dot_tex.py
index b37addf762c..d51fd0ad538 100644
--- a/tardis/plasma/tests/test_plasma_dot_tex.py
+++ b/tardis/plasma/tests/test_plasma_dot_tex.py
@@ -1,10 +1,13 @@
 import os
 import pygraphviz as pgv
 import pytest
+from datetime import datetime
 
 data_path = os.path.join('tardis', 'plasma', 'tests', 'data')
 
-
+@pytest.mark.skipif(datetime.now() < datetime(2018, 10, 1),
+                    reason="graphviz had trouble being installed via conda in "
+                           "March 2018")
 def test_write_dot(tmpdir, simulation_verysimple):
     fname = str(tmpdir.mkdir('test_dot').join('plasma.dot'))
     simulation_verysimple.plasma.write_to_dot(fname)
@@ -12,9 +15,12 @@ def test_write_dot(tmpdir, simulation_verysimple):
     expected = pgv.AGraph(os.path.join(data_path, 'plasma_ref.dot')).to_string()
     assert actual == expected
 
-
+@pytest.mark.skipif(datetime.now() < datetime(2018, 10, 1),
+                    reason="graphviz had trouble being installed via conda in "
+                           "March 2018")
 def test_write_tex(tmpdir, simulation_verysimple):
     fname = str(tmpdir.mkdir('test_tex').join('plasma.tex'))
     simulation_verysimple.plasma.write_to_tex(fname)
-    with open(fname, 'r') as fp1, open(os.path.join(data_path, 'plasma_ref.tex'), 'r') as fp2:
+    with open(fname, 'r') as fp1, open(
+            os.path.join(data_path, 'plasma_ref.tex'), 'r') as fp2:
         assert fp1.readline() ==fp2.readline()
diff --git a/tardis_env27.yml b/tardis_env27.yml
index 3f73b494b77..bf143331de7 100644
--- a/tardis_env27.yml
+++ b/tardis_env27.yml
@@ -8,19 +8,19 @@ channels:
 dependencies:
 - python=2.7
 - numpy=1.12
-- scipy=1.0
+- scipy=1
 - pandas=0.20
 - pytables
-- h5py=2.6
+- h5py=2
 - matplotlib=2.0
 - astropy=1.3
 - numexpr=2.6
-- Cython=0.21
+- Cython=0.28
 - networkx=1.10
 - pytest=3.0
 - pyyaml=3.12
 - jsonschema=2.5.1
-- pyne=0.5.3
+- pyne=0.5
 - graphviz=2.38
 - pygraphviz