Tweak .travis.yml

.travis.yml

@@ -1,11 +1,13 @@
-language: scala
+language: java
-scala: 2.12.7
 os: linux
-jdk: oraclejdk8
+jdk: openjdk8
+git:
+  depth: false # https://stackoverflow.com/a/51727114/3714539
 before_install:
-  - git fetch --tags
+  - mkdir .bin && curl -Lo .bin/sbt https://raw.githubusercontent.com/paulp/sbt-extras/a56bf05b1113e251aeaf7542f48c45c6c2691d4d/sbt
-script:
+  - export PATH="$(pwd)/.bin:$PATH"
-  - scripts/travis.sh
+  - export TRAVIS_SCALA_VERSION=2.12.8
+script: scripts/travis.sh
 stages:
   - name: test
   - name: release

scripts/travis.sh

@@ -1,12 +1,6 @@
 #!/usr/bin/env bash
 set -euvx
 
-downloadInstallSbtExtras() {
-  mkdir -p bin
-  curl -L -o bin/sbt https://github.com/paulp/sbt-extras/raw/9ade5fa54914ca8aded44105bf4b9a60966f3ccd/sbt
-  chmod +x bin/sbt
-}
-
 lmCoursier() {
   [ "${LM_COURSIER:-""}" = 1 ]
 }
@@ -55,8 +49,6 @@ addPgpKeys() {
 }
 
 
-downloadInstallSbtExtras
-
 if sbtShading; then
   runSbtShadingTests
 elif sbtPgpCoursier; then