changed pip upgrade strategy to only upgrade base package, not deps

modules/joule/manifests/init.pp

@@ -17,7 +17,7 @@ class joule {
   require python3
   
   $pip_url="http://puppet:wX27zvbA@pypi.wattsworth.net:8080/"
-  $pip_cmd="pip3 install --upgrade --extra-index-url ${pip_url} --trusted-host pypi.wattsworth.net"
+  $pip_cmd="pip3 install --upgrade --upgrade-strategy only-if-needed --extra-index-url ${pip_url} --trusted-host pypi.wattsworth.net"
 
 
   $deps = ['libblas-dev', 'liblapack-dev', 'gfortran']

modules/nilm/manifests/init.pp

@@ -13,7 +13,7 @@ class nilm {
   require raspi
   require python3
   $pip_url="http://puppet:wX27zvbA@pypi.wattsworth.net:8080/"
-  $pip_cmd="pip3 install --upgrade --extra-index-url ${pip_url} --trusted-host pypi.wattsworth.net"
+  $pip_cmd="pip3 install --upgrade-strategy only-if-needed --upgrade --extra-index-url ${pip_url} --trusted-host pypi.wattsworth.net"
   
   package{"libfreetype6-dev":
     ensure => present

modules/python3/manifests/build.pp

 class python3::build {
 
   $pip_url="http://puppet:wX27zvbA@pypi.wattsworth.net:8080/"
-  $pip_cmd="pip3 install --upgrade --extra-index-url ${pip_url} --trusted-host pypi.wattsworth.net"
+  $pip_cmd="pip3 install --upgrade --upgrade-strategy only-if-needed --extra-index-url ${pip_url} --trusted-host pypi.wattsworth.net"
 
   notify { "python3 is at [${::python_version}], building 3.5.2 from source": }