When I try to build a mod for 1.6.4 using ./gradlew build, I get the following error:

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring root project 'forge-1.6.4-9.11.1.964-src'.
> Could not resolve all dependencies for configuration ':classpath'.
   > Could not resolve net.minecraftforge.gradle:ForgeGradle:1.0-SNAPSHOT.
     Required by:
         :forge-1.6.4-9.11.1.964-src:unspecified
      > Unable to load Maven meta-data from https://repo.maven.apache.org/maven2/net/minecraftforge/gradle/ForgeGradle/1.0-SNAPSHOT/maven-metadata.xml.
         > Could not GET 'https://repo.maven.apache.org/maven2/net/minecraftforge/gradle/ForgeGradle/1.0-SNAPSHOT/maven-metadata.xml'.
            > peer not authenticated
      > Unable to load Maven meta-data from https://files.minecraftforge.net/maven/net/minecraftforge/gradle/ForgeGradle/1.0-SNAPSHOT/maven-metadata.xml.
         > Could not GET 'https://files.minecraftforge.net/maven/net/minecraftforge/gradle/ForgeGradle/1.0-SNAPSHOT/maven-metadata.xml'.
            > peer not authenticated

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

Upon investigation, it seems that forge gradle is no longer anywhere on maven in the repositories in my build.gradle. Has it been reuploaded elsewhere or can I just not mod 1.6.4 anymore?

 

The source code for what you want is here: https://github.com/MinecraftForge/ForgeGradle/tree/FG_1.0

or there is this in the modern maven repository: https://maven.minecraftforge.net/net/minecraftforge/gradle/ForgeGradle/1.0/maven-metadata.xml

 

But, you won't get support for anything before 1.18 in this forum.

You will have to work through problems yourself or find somebody else who mods on your version to help you.

Thank you so much, that worked!