Simplify Gradle versioning

Author: jupblb

.github/workflows/release-maven.yml

@@ -27,8 +27,8 @@ jobs:
         if: ${{ startsWith(github.ref, 'refs/tags/') }}
         run: |
           version="${GITHUB_REF_NAME#v}"
-          nix develop --command env VERSION="$version" \
-            gradle --no-daemon publishAndReleaseToMavenCentral
+          nix develop --command gradle --no-daemon \
+            "-PreleaseVersion=$version" publishAndReleaseToMavenCentral
         env:
           ORG_GRADLE_PROJECT_mavenCentralPassword: ${{ secrets.SONATYPE_PASSWORD }}
           ORG_GRADLE_PROJECT_mavenCentralUsername: ${{ secrets.SONATYPE_USERNAME }}

build.gradle.kts

@@ -25,20 +25,8 @@ plugins {
     alias(libs.plugins.vanniktech.maven.publish) apply false
 }
 
-val computedVersion =
-    providers
-        .gradleProperty("releaseVersion")
-        .orElse(providers.environmentVariable("VERSION").map { it.removePrefix("v") })
-        .orElse(
-            providers.provider {
-                rootProject.file("VERSION").takeIf { it.isFile }?.readText()?.trim()?.takeIf {
-                    it.isNotEmpty()
-                } ?: "0.0.0-SNAPSHOT"
-            }
-        )
-
 group = "com.sourcegraph"
-version = computedVersion.get()
+version = providers.gradleProperty("releaseVersion").orElse("0.0.0-SNAPSHOT").get()
 
 val javacModuleOptions =
     listOf(