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3.4.0 module name problems #1306

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barchetta opened this issue Jul 24, 2023 · 2 comments
Open

3.4.0 module name problems #1306

barchetta opened this issue Jul 24, 2023 · 2 comments

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@barchetta
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In 3.4.0:

  • okio-3.4.0.jar has no Automatic-Module-Name specified. Therefore its derived module name is okio
  • okio-jvm-3.4.0.jar has Automatic-Module-Name: okio . Therefore its module name is also okio

When you try to run an application with both of those jar's on the module path (java --module-path) you get an error:

java.lang.module.FindException: Two versions of module okio found in target/libs (okio-3.4.0.jar and okio-jvm-3.4.0.jar)

In 1.17.5 there is no okio-jvm-*.jar and okio-*.jar has Automatic-Module-Name: okio and this problem did not exist.
@barchetta barchetta mentioned this issue Jul 25, 2023
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@swankjesse
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swankjesse commented Jul 26, 2023 •
edited

As a workaround I recommend excluding the non-JVM artifact from your module path.

barchetta added a commit to barchetta/helidon that referenced this issue Jul 26, 2023
@barchetta
Work-around modularity issues with okio (square/okio#1306)
605488c
barchetta added a commit to helidon-io/helidon that referenced this issue Jul 27, 2023
@barchetta
3.x: upgrade okio to 3.4.0 (#7238)
9365db1 
* Force upgrade of okio common to 3.4.0
* Suppress graalvm-sdk false positive
* Work-around modularity issues with okio (square/okio#1306)
@jensli
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jensli commented Dec 6, 2023

I ran in to this problem in a modular Java application that uses OkHttp.

I suggest this simple solution to the okio developers: Add an "Automatic-Module-Name" entry to the manifest of okio-x.x.x.jar also. Call it for example okio-top-level. Then the two module names will not conflict any more.

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@jensli @swankjesse @barchetta