How to change the modified time stamp of files in a jar with a Tycho build

Question

I have a Tycho build that builds some plugins. I need to configure the build so that it is reproducible - meaning the created artifacts of different build runs have to be identical.

For my build, this is currently not the case. The differentes of 2 build runs artifact's is the meta data of the files in the jar's. The "Modified" timestamp is different for every build.

So my question is: Does Tycho provide a way to set the modified timestamp to a specific value? Or is there another way do do this?

Answer 1

I was able to fix it now. The maven plugin reproducible-build-maven-plugin does exactly what i need:

<plugin>
    <groupId>io.github.zlika</groupId>
    <artifactId>reproducible-build-maven-plugin</artifactId>
    <version>0.13</version>
    <executions>
        <execution>
            <goals>
                <goal>strip-jar</goal>
            </goals>
        </execution>
    </executions>
</plugin>