Major Description
dependency:tree is really useful for tracking down how a particular transitive dependency has been introduced, but it only lists the first occurrence, not all occurrences. So it can be frustrating game attempting to remove a dep only to find it introduced by another component. A parameter to dependency:tree to show all occurences of a transitive dep would be really helpful.
Eg the attached POM has a direct dep on commons-beanutils and commons-digester, which both have a dep on commons-logging. But executing
mvn org.apache.maven.plugins:maven-dependency-plugin:2.0-alpha-5-SNAPSHOT:tree
only shows commons-logging listed as a transitive dep for commons-beanutils, not commons-digester, Ie
[INFO] [dependency:tree] [INFO] maven-dependency-plugin-tree-all-deps:maven-dependency-plugin-tree-all-deps:jar:0.0.1 [INFO] +- commons-beanutils:commons-beanutils:jar:1.7.0:compile [INFO] | \- commons-logging:commons-logging:jar:1.0.3:compile [INFO] \- commons-digester:commons-digester:jar:1.7:compile [INFO] +- commons-collections:commons-collections:jar:2.1:compile [INFO] \- xml-apis:xml-apis:jar:1.0.b2:compile [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESSFUL [INFO] ------------------------------------------------------------------------
but if an exclusion is added to commons-beanutils for for commons-logging, then the other transitive dep instance is revealed. Ie
[INFO] [dependency:tree] [INFO] maven-dependency-plugin-tree-all-deps:maven-dependency-plugin-tree-all-deps:jar:0.0.1 [INFO] +- commons-beanutils:commons-beanutils:jar:1.7.0:compile [INFO] \- commons-digester:commons-digester:jar:1.7:compile [INFO] +- commons-logging:commons-logging:jar:1.0:compile [INFO] +- commons-collections:commons-collections:jar:2.1:compile [INFO] \- xml-apis:xml-apis:jar:1.0.b2:compile [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESSFUL [INFO] ------------------------------------------------------------------------
An option to show both instance would be fantastic, Eg
[INFO] [dependency:tree] [INFO] maven-dependency-plugin-tree-all-deps:maven-dependency-plugin-tree-all-deps:jar:0.0.1 [INFO] +- commons-beanutils:commons-beanutils:jar:1.7.0:compile [INFO] | \- commons-logging:commons-logging:jar:1.0.3:compile [INFO] \- commons-digester:commons-digester:jar:1.7:compile [INFO] +- commons-logging:commons-logging:jar:1.0:compile [INFO] +- commons-collections:commons-collections:jar:2.1:compile [INFO] \- xml-apis:xml-apis:jar:1.0.b2:compile [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESSFUL [INFO] ------------------------------------------------------------------------