Add back project version (#571)

Turns out it is required to generate the pom and jars in the right location
with the correct version.

Author: TimvdLippe

.github/workflows/ci.yml

@@ -82,7 +82,9 @@ jobs:
           java-version: 17
 
       - name: Build and publish to Bintray/MavenCentral
-        run: ./build.sh
+        run: ./gradlew writeActualVersion
+          && export PROJECT_VERSION=`cat version.actual`
+          && ./build.sh
           && ./gradlew publishToSonatype githubRelease closeAndReleaseStagingRepositories releaseSummary
         env:
           GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}

build.gradle

@@ -111,6 +111,12 @@ tasks {
     }
 }
 
+tasks.register("writeActualVersion") {
+    doLast {
+        file("version.actual") << "$version"
+    }
+}
+
 tasks.register("releaseSummary") {
     doLast {
         if (isSnapshot) {

build.sbt

@@ -7,6 +7,8 @@ val currentScalaVersion = "2.13.16"
 inThisBuild(
   Seq(
     scalaVersion := currentScalaVersion,
+    // Load version from the file so that Gradle/Shipkit and SBT use the same version
+    version := sys.env.getOrElse("PROJECT_VERSION", "0.1.0")
   )
 )