Speed up travis

.travis.yml

@@ -4,10 +4,29 @@ language: bash
 
 sudo: false
 
+before_install:
+  - echo -e "Host github.com\n\tStrictHostKeyChecking no\n" >> ~/.ssh/config
+  - | # epic build time improvement - see https://github.com/elm-lang/elm-compiler/issues/1473#issuecomment-245704142
+    if [ ! -d sysconfcpus/bin ];
+    then
+      git clone https://github.com/obmarg/libsysconfcpus.git;
+      cd libsysconfcpus;
+      ./configure --prefix=$TRAVIS_BUILD_DIR/sysconfcpus;
+      make && make install;
+      cd ..;
+    fi
+
+
 install:
   - nvm install 6
   - nvm use 6
   - npm install
+  - if [ ! -f node_modules/.bin/elm-make-old ];
+    then
+      mv node_modules/.bin/elm-make node_modules/.bin/elm-make-old;
+      printf '%s\n\n' '#!/bin/bash' 'echo "Running elm-make with sysconfcpus -n 2"' '$TRAVIS_BUILD_DIR/sysconfcpus/bin/sysconfcpus -n 2 elm-make-old "$@"' > $(npm config get prefix)/bin/elm-make;
+      chmod +x $(npm config get prefix)/bin/elm-make;
+    fi
   - bin/install-elm-format linux
   - export PATH=$PATH:$PWD/bin
 
@@ -18,5 +37,5 @@ script:
 
 cache:
   directories:
-    - node_modules
     - elm-stuff
+    - sysconfcpus

config.json

@@ -155,15 +155,15 @@
             "topics": []
         }
     ],
-  "deprecated": [
+    "deprecated": [],
-
-  ],
     "ignored": [
         "bin",
         "elm-stuff",
         "node_modules",
-    "docs"
+        "docs",
+        "tests",
+        "libsysconfcpus",
+        "sysconfcpus"
     ],
-  "foregone": [
+    "foregone": []
-  ]
 }