Transitive import-scoped dependencies are not resolved using mirrors

[Christian Rösch <Ch...@icongmbh.de>]

Hi,

my question is related to https://issues.apache.org/jira/browse/MNG-4347 
but also to somehow to this thread 
https://lists.apache.org/thread.html/bdefb134c4b605af2e15045500af3685e4281eb3513a7b6a29ff1778@1310154622@%3Cusers.maven.apache.org%3E


Given is:

- project A has project B as dependency
- project B has project C as dependency, while C is pom-packed -> 
scope=import and also as dependency
- project A, B and C are SNAPSHOT versions
- all three POMs point the user to two repositories: repository-a 
releases-enabled=true, snapshots-enabled=false and repository-b 
releases-enabled=false, snapshots-enabled=true
- the settings file of the user points all repositories to a mirror

When $ mvn -U clean verify is run in project A

Maven gives the following error:

[ERROR] Failed to execute goal on project test.a: Could not resolve 
dependencies for project test:test.a:jar:1.0-SNAPSHOT: Failed to collect 
dependencies at test:test.b:jar:1.0-SNAPSHOT: Failed to read artifact 
descriptor for test:test.b:jar:1.0-SNAPSHOT: Could not find artifact 
test:test.c:pom:1.0-SNAPSHOT -> [Help 1]


While downloading it doesn't even try a request for dependency C at the 
mirror or one of the repositories (double checked with a proxy).

If the mirror definition gets modified to 
<mirrorOf>*,!repository-b</mirrorOf>

everything works. The SNAPSHOTs are requested (and found) and the build 
is a SUCCESS.


Error happens with Maven 3.6.0 and does not happen with 3.1.1 (3.1.1 is 
as far as I know the last version where this constellation is working).

Does multiple repositories to one mirror still work like explained in 
the question - it just replaces the URL in the repo-definitions but the 
repo-definitions remain?

Is there any other explanation for that behavior or is it just a bug?


-- Christian

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