Flag to ignore manifest mods

src/main/java/me/itzg/helpers/curseforge/CurseForgeInstaller.java

@@ -17,6 +17,7 @@
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.time.Duration;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.Collections;
@@ -145,6 +146,9 @@ public class CurseForgeInstaller {
     @Getter @Setter
     private String customModLoaderVersion;
 
+    @Getter @Setter
+    private boolean excludeAllMods;
+
     /**
      */
     public void installFromModpackZip(Path modpackZip, String slug) {
@@ -546,20 +550,11 @@ private void trimLevelsContent(CurseForgeManifest manifest) {
         });
     }
 
-    private ModPackResults processModpack(InstallContext context,
-        MinecraftModpackManifest modpackManifest, OverridesApplier overridesApplier
-    ) throws IOException {
-        if (modpackManifest.getManifestType() != ManifestType.minecraftModpack) {
-            throw new InvalidParameterException("The zip file provided does not seem to be a Minecraft modpack");
+    private List<PathWithInfo> getModFiles(InstallContext context, MinecraftModpackManifest modpackManifest, OutputSubdirResolver outputSubdirResolver) {
+        if (excludeAllMods) {
+            return new ArrayList<>();
         }
 
-        final ModLoader modLoader = modpackManifest.getMinecraft().getModLoaders().stream()
-            .filter(ModLoader::isPrimary)
-            .findFirst()
-            .orElseThrow(() -> new GenericException("Unable to find primary mod loader in modpack"));
-
-        final OutputSubdirResolver outputSubdirResolver = new OutputSubdirResolver(outputDir, context.categoryInfo);
-
         final ExcludeIncludeIds excludeIncludeIds = resolveExcludeIncludes(context);
         log.debug("Using {}", excludeIncludeIds);
 
@@ -602,6 +597,25 @@ private ModPackResults processModpack(InstallContext context,
             .collectList()
             .block();
 
+        return modFiles;
+    }
+
+    private ModPackResults processModpack(InstallContext context,
+        MinecraftModpackManifest modpackManifest, OverridesApplier overridesApplier
+    ) throws IOException {
+        if (modpackManifest.getManifestType() != ManifestType.minecraftModpack) {
+            throw new InvalidParameterException("The zip file provided does not seem to be a Minecraft modpack");
+        }
+
+        final ModLoader modLoader = modpackManifest.getMinecraft().getModLoaders().stream()
+            .filter(ModLoader::isPrimary)
+            .findFirst()
+            .orElseThrow(() -> new GenericException("Unable to find primary mod loader in modpack"));
+
+        final OutputSubdirResolver outputSubdirResolver = new OutputSubdirResolver(outputDir, context.categoryInfo);
+
+        final List<PathWithInfo> modFiles = getModFiles(context, modpackManifest, outputSubdirResolver);
+
         final Result overridesResult = overridesApplier.apply();
 
         prepareModLoader(modLoader.getId(), modpackManifest.getMinecraft().getVersion());

src/main/java/me/itzg/helpers/curseforge/InstallCurseForgeCommand.java

@@ -128,6 +128,12 @@ public void setForceIncludeMods(Set<String> forceIncludeMods) {
             }
             Set<String> forceIncludeMods;
         }
+
+        @Option(
+            names = "--exclude-all-mods",
+            description = "Exclude all mods regardless of manifest contents"
+        )
+        boolean excludeAllMods;
     }
 
     @Option(names = "--filename-matcher", paramLabel = "STR",
@@ -239,7 +245,8 @@ public Integer call() throws Exception {
             .setMaxConcurrentDownloads(maxConcurrentDownloads)
             .setFileDownloadRetries(fileDownloadRetries)
             .setFileDownloadRetryMinDelay(fileDownloadRetryMinDelay)
-            .setCustomModLoaderVersion(modLoaderVersion);
+            .setCustomModLoaderVersion(modLoaderVersion)
+            .setExcludeAllMods(excludeIncludeArgs.excludeAllMods);
 
         if (apiBaseUrl != null) {
             installer.setApiBaseUrl(apiBaseUrl);