PackageManagerConfiguration: Add the property mustRunAfter

Make it possible to configure that one package manager must run after a
list of other package managers. For example, this can be used if one
package manager depends on files that are generated by another package
manager.

Fixes oss-review-toolkit#5174.

Signed-off-by: Martin Nonnenmacher <martin.nonnenmacher@bosch.io>

analyzer/src/main/kotlin/Analyzer.kt

@@ -150,7 +150,7 @@ class Analyzer(private val config: AnalyzerConfiguration, private val labels: Ma
                     manager = manager,
                     definitionFiles = files,
                     labels = labels,
-                    mustRunAfter = emptySet(),
+                    mustRunAfter = config.packageManagers?.get(manager.managerName)?.mustRunAfter?.toSet().orEmpty(),
                     finishedPackageManagersState = state.finishedPackageManagersState,
                     onResult = { result -> state.addResult(manager, result) }
                 )

model/src/main/kotlin/config/PackageManagerConfiguration.kt

@@ -26,6 +26,12 @@ import com.fasterxml.jackson.annotation.JsonInclude
  */
 @JsonInclude(JsonInclude.Include.NON_NULL)
 data class PackageManagerConfiguration(
+    /**
+     * A list of package manager names that this package manager must run after. For example, this can be used, if
+     * another package manager generates files that this package manager requires to run correctly.
+     */
+    val mustRunAfter: List<String>? = null,
+
     /**
      * Custom configuration options for the package manager. See the documentation of the respective class for available
      * options.

model/src/main/resources/reference.conf

@@ -28,6 +28,12 @@ ort {
     disabledPackageManagers = [Maven, NPM]
 
     packageManagers {
+      Gradle {
+        # A list of package manager names that this package manager must run after. For example, this can be used, if
+        # another package manager generates files that this package manager requires to run correctly.
+        mustRunAfter = [NPM]
+      }
+
       # Some package managers provide custom configuration options that are documented in the package manager class. At
       # the example of DotNet, these can be set like:
       DotNet {

model/src/test/kotlin/config/OrtConfigurationTest.kt

@@ -52,6 +52,10 @@ class OrtConfigurationTest : WordSpec({
                 allowDynamicVersions shouldBe true
 
                 packageManagers shouldNotBeNull {
+                    get("Gradle") shouldNotBeNull {
+                        mustRunAfter should containExactly("NPM")
+                    }
+
                     get("DotNet") shouldNotBeNull {
                         options shouldNotBeNull {
                             this shouldContainExactly mapOf("directDependenciesOnly" to "true")