locking snapshot versions when depending on multi-module project - maven

Question

I have a multi-module project (B) that depends on various modules of another multi-module project (A). Each module of (B) might depend on different parts of (A), but they should all use the same version of (A). Current that version is specified as a property in the parent pom of (B).
I would like be able to lock the version used to a specific build (x.y.z-ts-buildnum) from a single command while keeping the version of (B) to use listed only once.
In parent:
<dep.version>4.1.0-SNAPSHOT</dep.version>
In a module:
<dependency>
<groupId>com.example</groupId>
<artifactId>B-foo</artifactId>
<version>${dep.version}</version>
</dependency>
I tried:
versions:lock-snapshots but that does not seem to lock versions set by properties
versions:update-properties which is for updating property versions but not locking snapshots
Writing a script around resolving the latests snapshot of A's pom from the local repository, but that does not work because each module has it's own timestamp. I could write a script to look at every module, but that's getting close to the amount of work a maven plugin would do.

Answer 1

I would suggest to define the dependencies to your module-A in your parent of the module-b like this:
<properties>
<module-a.version>6.5.0-12-SNAPSHOT</module-b.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.example</groupId>
<artifactId>A-foo</artifactId>
<version>${module-a.version}</version>
</dependency>
<dependency>
<groupId>com.example</groupId>
<artifactId>A-bar</artifactId>
<version>${module-a.version}</version>
</dependency>
...
</dependencies>
</dependencyManagement>
Within your modules you now only need to write:
<dependency>
<groupId>com.example</groupId>
<artifactId>A-bar</artifactId>
</dependency>
which will give you the possibility to change the version of all modules only within a single place. At the root of your module-A.