UPDATE

CiiLu · CiiLu · commit 2e8c0a4894de · 2026-01-21T21:35:11.000+08:00
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/launch/DefaultLauncher.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/launch/DefaultLauncher.java
@@ -582,6 +582,7 @@ private Map<String, String> getEnvVars() {
 
         for (ModLoaderType type : analyzer.getModLoaders()) {
             if (type == ModLoaderType.NEO_FORGED) env.put("INST_NEOFORGE", "1");
+            else if (type == ModLoaderType.LEGACY_FABRIC) env.put("INST_LEGACYFABRIC", "1");
             else env.put("INST_" + type.name().toUpperCase(Locale.ROOT), "1");
         }
 

Original file line number	Diff line number	Diff line change
`@@ -582,6 +582,7 @@ private Map<String, String> getEnvVars() {`
`582`	`582`
`583`	`583`	`for (ModLoaderType type : analyzer.getModLoaders()) {`
`584`	`584`	`if (type == ModLoaderType.NEO_FORGED) env.put("INST_NEOFORGE", "1");`
	`585`	`+ else if (type == ModLoaderType.LEGACY_FABRIC) env.put("INST_LEGACYFABRIC", "1");`
`585`	`586`	`else env.put("INST_" + type.name().toUpperCase(Locale.ROOT), "1");`
`586`	`587`	`}`
`587`	`588`