Fix class duplicates

I’m using pureconfig v0.14.0. Running pantsbuild (v1.30.0) detect-duplicates multiple duplicates are detected:

$ ./pants detect-duplicates src/scala/myapp:main
...
 [detect-duplicates]

                    ===== For target JvmBinary(src/scala/com/eslgaming/services/gamehub/http4s_poc:main):
                   Duplicate classes and/or resources detected in artifacts: ('com.github.pureconfig-pureconfig-core_2.12-0.14.0.jar', 'com.github.pureconfig-pureconfig-macros_2.12-0.14.0.jar')
                        pureconfig/DerivationMacros$$anon$5.class
                        pureconfig/derivation/LazyContextParser.class
                        pureconfig/DerivationMacros$$typecreator2$1.class
                        pureconfig/DerivationMacros$$anon$1.class
                        pureconfig/derivation/LazyContextParser$LazyContext$.class
                        pureconfig/DerivationMacros$$anonfun$$nestedInanonfun$buildImplicitNotFound$1$1.class
                        pureconfig/Derivation$Successful$.class
                        pureconfig/derivation/LazyContextParser$LazyContextTree$$anon$2.class
                        pureconfig/derivation/MacroCompat$$typecreator1$1.class
                        pureconfig/Derivation$Successful.class
                        ... 20 more ...
                   Duplicate classes and/or resources detected in artifacts: ('com.github.pureconfig-pureconfig-generic-base_2.12-0.14.0.jar', 'com.github.pureconfig-pureconfig-generic_2.12-0.14.0.jar')
                        pureconfig/generic/CoproductHint$Attempt$.class
                        pureconfig/generic/CoproductHint$Use$.class
                        pureconfig/generic/error/CoproductHintException$.class
                        pureconfig/generic/ProductHint$Use.class
                        pureconfig/generic/ProductHint$Action.class
                        pureconfig/generic/ProductHint$UseOrDefault.class
                        pureconfig/generic/ProductHint$UseOrDefault$.class
                        pureconfig/generic/error/NoValidCoproductOptionFound$.class
                        pureconfig/generic/ProductHint$Use$.class
                        pureconfig/generic/ProductHintImpl.class
                        ... 18 more ...

Unfortunately, I cannot create a fat-jar if I have this kind of duplicates.

This issue is related to https://github.com/pureconfig/pureconfig/issues/430. Also reported in https://github.com/pantsbuild/pants/issues/11488.

[leifwickland]

@sentenza Just to be explicit, this issue should be fixed. That said, we haven’t published a release with the fix, yet.

[ruippeixotog]

That’s a good insight @leifwickland, thanks for sharing! I guess it makes me a bit more comfortable removing OSGi support knowing that popular libraries did it too and got no complaints.

I know @jcazevedo is also on board with this, so I’ll open a PR to do it.