Merge pull request #6 from GTNewHorizons/update-build-script

Update build script and CI

.gitignore

@@ -26,4 +26,3 @@ whitelist.json
 *.ipr
 *.iws
 src/main/resources/mixins.*.json
-*.bat

build.gradle

@@ -1,4 +1,4 @@
-//version: a553e159ecaf0fc236cf25b2c124ea90f92bb140
+//version: ffe7b130f98fdfa1ac7c6ba4bd34722a55ab28d4
 /*
 DO NOT CHANGE THIS FILE!
 
@@ -62,6 +62,10 @@ idea {
     }
 }
 
+if(JavaVersion.current() != JavaVersion.VERSION_1_8) {
+    throw new GradleException("This project requires Java 8, but it's running on " + JavaVersion.current())
+}
+
 checkPropertyExists("modName")
 checkPropertyExists("modId")
 checkPropertyExists("modGroup")
@@ -153,7 +157,12 @@ configurations.all {
 // Fix Jenkins' Git: chmod a file should not be detected as a change and append a '.dirty' to the version
 'git config core.fileMode false'.execute()
 // Pulls version from git tag
-version = minecraftVersion + "-" + gitVersion()
+try {
+    version = minecraftVersion + "-" + gitVersion()
+}
+catch (Exception e) {
+    throw new IllegalStateException("This mod must be version controlled by Git AND the repository must provide at least one tag!");
+}
 group = modGroup
 archivesBaseName = modId
 
@@ -451,22 +460,6 @@ artifacts {
     }
 }
 
-// Crude handler to append custom maven repositories to maven dependency
-install{
-    repositories{
-        mavenInstaller{
-            pom.withXml {
-                def repositoriesNode = asNode().appendNode("repositories")
-                project.repositories.each { repository ->
-                    def repositoryNode = repositoriesNode.appendNode("repository")
-                    repositoryNode.appendNode("name", repository.name)
-                    repositoryNode.appendNode("url", repository.properties.get("url"))
-                }
-            }
-        }
-    }
-}
-
 // Updating
 task updateBuildScript {
     doLast {