Github plugins not available on any maven repository

[anonymous]

I'm trying to use this plugin as a dependency to another one via manifest plugin-requires = todo attribute.

I added in gradle.properties:

plugin.requires = utilsplugin2;todoplugin

However when compiling (via gradle josm plugin (​https://github.com/floscher/gradle-josm-plugin)) todo plugin cannot be found on any of these URLs:

A problem occurred configuring root project 'josm-scripting-plugin'.
> Could not resolve all files for configuration ':detachedConfiguration2'.
   > Could not find org.openstreetmap.josm.plugins:todoplugin:SNAPSHOT.
     Searched in the following locations:
       - https://repo.maven.apache.org/maven2/org/openstreetmap/josm/plugins/todoplugin/SNAPSHOT/todoplugin-SNAPSHOT.pom
       - https://repo.maven.apache.org/maven2/org/openstreetmap/josm/plugins/todoplugin/SNAPSHOT/todoplugin-SNAPSHOT.jar
       - https://josm.openstreetmap.de/nexus/content/repositories/releases/org/openstreetmap/josm/plugins/todoplugin/SNAPSHOT/todoplugin-SNAPSHOT.pom
       - https://josm.openstreetmap.de/nexus/content/repositories/releases/org/openstreetmap/josm/plugins/todoplugin/SNAPSHOT/todoplugin-SNAPSHOT.jar
       - https://josm.openstreetmap.de/download/ivy.jar
       - https://josm.openstreetmap.de/download/ivy-SNAPSHOT.jar
       - https://josm.openstreetmap.de/download/ivy-snapshot-SNAPSHOT.jar
       - https://josm.openstreetmap.de/download/Archiv/ivy-snapshot-SNAPSHOT.jar
       - https://josm.openstreetmap.de/download/todoplugin.jar
       - https://josm.openstreetmap.de/download/todoplugin-SNAPSHOT.jar
       - https://josm.openstreetmap.de/download/todoplugin-snapshot-SNAPSHOT.jar
       - https://josm.openstreetmap.de/download/Archiv/todoplugin-snapshot-SNAPSHOT.jar
       - https://josm.openstreetmap.de/nexus/content/repositories/snapshots/org/openstreetmap/josm/plugins/todoplugin/SNAPSHOT/todoplugin-SNAPSHOT.pom
       - https://josm.openstreetmap.de/nexus/content/repositories/snapshots/org/openstreetmap/josm/plugins/todoplugin/SNAPSHOT/todoplugin-SNAPSHOT.jar
       - https://svn.openstreetmap.org/applications/editors/josm/dist/ivy.jar
       - https://svn.openstreetmap.org/applications/editors/josm/dist/todoplugin.jar
     Required by:
         project :

[Don-vip]

Github plugins are not managed on Nexus.

[bagage]

Could/Should they?

Yet, when installing a plugin from within JOSM, it is downloaded from somewhere? That somewhere location could be added as a potential source for search locations, so that all plugins are available? Or we need more than a simple jar?

[floscher]

I created ​https://gitlab.com/floscher/gradle-josm-plugin/issues/1 to support these plugins even when they are not in the Nexus repository.

[floscher]

It seems the current URLs of plugins released with GitHub releases are not going to work. Gradle will send a HEAD request when resolving dependencies, GitHub will answer with 403 Forbidden if the request is HEAD and not GET:

   > Could not resolve org.openstreetmap.josm.plugins:todo:SNAPSHOT.
     Required by:
         project :
      > Could not resolve org.openstreetmap.josm.plugins:todo:SNAPSHOT.
         > Could not get resource 'https://github.com/JOSM/todo/releases/download/v30305/todo.jar'.
            > Could not HEAD 'https://github.com/JOSM/todo/releases/download/v30305/todo.jar'. Received status code 403 from server: Forbidden

[Don-vip]

Can't you change this behaviour of Gradle? Through a plugin or something?

[floscher]

I could work around that and download the dependency differently, but that would come with other drawbacks, like the dependency would not be cached. See discussion at ​https://github.com/gradle/gradle/issues/5322 .

Probably the best solution would be to put these plugins in the Nexus repository, instead of hacking around the problem.
I currently have a pull request that allows to publish releases to Github: ​https://github.com/floscher/gradle-josm-plugin/pull/6 . I think I'll try to modify that to also allow to publish to a Maven repo (like https://josm.openstreetmap.de/nexus/)