Revert "Migrate to the cthing-versioning plugin."

This reverts commit e5e481f.

build.gradle.kts

@@ -1,33 +1,29 @@
 import com.github.spotbugs.snom.Confidence
 import com.github.spotbugs.snom.Effort
-import org.cthing.projectversion.BuildType
-import org.cthing.projectversion.ProjectVersion
 import java.text.SimpleDateFormat
 import java.util.*
 
 repositories {
     mavenCentral()
 }
 
-buildscript {
-    repositories {
-        mavenCentral()
-    }
-}
-
 plugins {
     `java-library`
     checkstyle
     jacoco
     `maven-publish`
     signing
-    alias(libs.plugins.cthingVersioning)
     alias(libs.plugins.dependencyAnalysis)
     alias(libs.plugins.spotbugs)
     alias(libs.plugins.versions)
 }
 
-version = ProjectVersion("1.0.1", BuildType.snapshot)
+val baseVersion = "1.0.1"
+val isSnapshot = true
+
+val isCIServer = System.getenv("CTHING_CI") != null
+val buildNumber = if (isCIServer) System.currentTimeMillis().toString() else "0"
+version = if (isSnapshot) "$baseVersion-$buildNumber" else baseVersion
 group = "org.cthing"
 description = "A version object for C Thing Software projects."
 
@@ -212,8 +208,7 @@ publishing {
         }
     }
 
-    val repoUrl = if ((version as ProjectVersion).isSnapshotBuild)
-        findProperty("cthing.nexus.snapshotsUrl") else findProperty("cthing.nexus.candidatesUrl")
+    val repoUrl = if (isSnapshot) findProperty("cthing.nexus.snapshotsUrl") else findProperty("cthing.nexus.candidatesUrl")
     if (repoUrl != null) {
         repositories {
             maven {

gradle/libs.versions.toml

@@ -6,7 +6,6 @@ junit = "5.10.2"
 spotbugs = "4.8.5"
 
 [plugins]
-cthingVersioning = { id = "org.cthing.cthing-versioning", version = "1.0.0" }
 dependencyAnalysis = { id = "com.autonomousapps.dependency-analysis", version = "1.32.0" }
 spotbugs = { id = "com.github.spotbugs", version = "6.0.15" }
 versions = { id = "com.github.ben-manes.versions", version = "0.51.0" }