[query] move mill modules into subdirectory

[patrick-schultz]

Change Description

To prepare for breaking the mill build up into more smaller modules, move all mill modules into a subdirectory, so as to not pollute hail/hail with a bunch of module directories.

Only 6 files are actually modified, the rest are just moved:

build.yaml
{src/main/c => c}/Makefile
hail/Makefile
hail/build.mill
hail/generate_splits.py
hail/python/test/hail/helpers.py

The moves were performed by

cd hail
mv src/main/c c
mv src/dist/scripts hail/dist/scripts
mv src/main/scala hail/src
mv src/main/java hail/src
mv src/main/resources hail/resources
mv src/debug/java hail/memory/debug/src
mv src/release/java hail/memory/release/src
mv src/test/scala hail/test/src
mv src/test/resources hail/test/resources

Security Assessment

• This change has no security impact

Impact Description

Low-level refactoring of the build system and source directory structure

(Reviewers: please confirm the security impact before approving)

[patrick-schultz]

• [query] move mill modules into subdirectory #14772 : 3 dependent PRs (#14773 , #14783 , #14796 ) 👈 (View in Graphite)
• [query] remove *.out from .gitignore #14780
• [query] don't hardcode paths to test resources, cont'd #14779
• main

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[ehigham]

an opportunity for hail/hail/hail

[patrick-schultz]

Is this an actual request to change the name? I don't have any strong feelings one way or the other.

[patrick-schultz]

As long as we're already moving everything, should I also switch to the mill default directory structure, moving modules/src/main/java and modules/src/main/scala to modules/src, moving modules/src/main/resources to modules/resources, and moving modules/src/test to modules/test?

[chrisvittal]

If that's the mill default project structure, then yes.