Compiler process takes a long time to stop

[arnaudsjs]

Problem description:

When the compiler finishes, it takes a long time for the process to actually stop. It's unclear why this happens.

Illustration:

❯ time inmanta -vvv compile
compiler       DEBUG   Starting compile
compiler       DEBUG   Parsing took 5.046 seconds
compiler       DEBUG   Compiler cache observed 109 hits and 0 misses (100%)
compiler       INFO    verifying project
compiler       WARNING Module lsm is present in requires but it is not used by the model.
compiler       DEBUG   Plugin loading took 0.253 seconds
compiler       INFO    The following modules are currently installed:
compiler       INFO    V2 modules:
compiler       INFO      juniper_mx: 23.1.4.dev20241125041038
compiler       INFO      juniper_srx: 23.2.1.dev20241125024622
compiler       INFO      std: 7.0.1.dev20241125112313
compiler       INFO      yang: 3.3.2.dev20241125045214
compiler       DEBUG   Compilation took 2.079 seconds
compiler       DEBUG   Compile done
compiler       DEBUG   The entire compile command took 7.389 seconds

=============================================================================================================================================================================== SUCCESS ===============================================================================================================================================================================
inmanta -vvv compile  12.26s user 0.23s system 99% cpu 12.562 total

How to reproduce:

Create a new project that imports a big module and run the above-mentioned command.