build.gradle.diff

diff --git a/build.gradle b/build.gradle
index 000d73a..72a2730 100644
--- a/build.gradle
+++ b/build.gradle
@@ -35,7 +35,7 @@ def schemaDir = "$buildDir/schema"
 def rootBuild = "${rootProject.projectDir}/build"
 def finalSandboxDir = "${rootBuild}/cabal-sandbox"
 def rawSandboxDir = "${rootBuild}/raw-cabal-sandbox"
-def sandboxConfig = "${rootBuild}/cabal.sandbox.config"
+def sandboxConfig = "${projectDir}/cabal.sandbox.config"
 
 configurations {
        sandbox
@@ -63,8 +63,9 @@ task copySchema(type: Copy) {
 }
 
 task cabalInitConfig(type: Exec) {
-    onlyIf{!file("${sandboxConfig}").exists()}
-    commandLine "bash" , "-c", "cabal sandbox init --sandbox=$finalSandboxDir && mv cabal.sandbox.config ${rootBuild}/"
+       outputs.upToDateWhen{file("${sandboxConfig}").exists()}
+    // onlyIf
+    commandLine "bash" , "-c", "cabal sandbox init --sandbox=$finalSandboxDir"
        outputs.file "${sandboxConfig}"
 }
 
@@ -79,7 +80,7 @@ task copyCabalSandbox(type: Copy) {
 
 def finalisedFile = "${rootBuild}/finalised"
 task finaliseSandbox(type: FinaliseSandbox) {
-    onlyIf{!file("${finalisedFile}").exists()}
+    outputs.upToDateWhen{file("${finalisedFile}").exists()}
        dependsOn copyCabalSandbox
     finalSandbox(finalSandboxDir)
     rawSandbox(rawSandboxDir)
@@ -94,7 +95,7 @@ task addStuffToSandbox(type: Exec) {
        dependsOn copySchema
     def deps = []
     def copyDeps = [copySchema]
-    onlyIf {
+    onlyIf{
         copyDeps.each {
             it.outputs.files.each { it.eachFile {
                     def depBase = org.apache.commons.io.FilenameUtils.getBaseName("${it}")