add a flag to control the hash checking

Signed-off-by: Trial97 <[email protected]>

Author: Trial97

src/main/java/net/minecraftforge/installer/actions/PostProcessors.java

@@ -46,6 +46,7 @@ public class PostProcessors {
     private final ProgressCallback monitor;
     private final boolean hasTasks;
     private final List<Processor> processors;
+    private boolean skipHashCheck = false;
 
     public PostProcessors(InstallV1 profile, boolean isClient, ProgressCallback monitor) {
         this.profile = profile;
@@ -234,7 +235,7 @@ public Set<File> process(File librariesDir, File minecraft, File root, File inst
                         ret.add(output.file);
                         if (!output.file.exists()) {
                             err.append("\n    ").append(output.file).append(" missing");
-                        } else {
+                        } else if (!this.skipHashCheck){
                             String sha = DownloadUtils.getSha1(output.file);
                             if (sha.equals(output.sha1)) {
                                 log("  Output: " + output.file + " Checksum Validated: " + sha);