Is there a way to get a list of libraries or apps under

src/

and

libs/

that have changed since a git point in time (e.g. when using

pants --changed-since=origin/main

)? With

nx

we would do

yarn nx affected --target build --base=${{ needs.set-nx-base.outputs.NX_BASE }}

Have you read through https://www.pantsbuild.org/stable/docs/using-pants/advanced-target-selection? Without knowing what nx does, it seems like combining a few of those recipes would do what you want?

I'll have a look - thanks

If you just want the list that also works with

--changed-since

, just to be clear. For the filtering by address you probably want

--filter-address-regex

, and for type you want

--filter-target-type

. I'm not sure 100% how these interact with changed-since and transitive dependencies.

pants --changed-since=origin/main list

shows all files changed - I guess I could just pipe that to a script to get the impacted projects or libs

pants --changed-since=origin/main --changed-dependents=transitive  list

also returns

You could use --filter-target-type to only select packages/libraries/whatever along with those other options. something like

pants --changed-since=origin/main --changed-dependents=transitive --filter-target-type=docker_image

to find all docker images that have been changed

Thanks!

That information was also on the page I linked 🙂 Is there anything we can do to make that information more accessible?

I'll give that some thought- it just didn't fit in my head as the thing I was looking for

Yeah, combining filters and pipes is a useful pattern. Though if your goal is to have general engineers engage with this, I've found that writing a Python script instead of shell script is more approachable. Then we package that script as a pex and run. So our container publish script starts like this:

info = pants(
        f"--changed-since={args.treeish}",
        "--changed-dependees=transitive",
        "--filter-target-type=oci_python_image,oci_image_build",
        "list",
        pants_args=args.pants,
    )

From the same page: https://www.pantsbuild.org/stable/docs/using-pants/advanced-target-selection#using-cli-aliases Cli aliases are pretty useful. You could put this into your pants.toml

[cli.alias]
--changed-docker = "--changed-since=origin/main --changed-dependents=transitive --filter-target-type=docker_image"

and then use

pants --changed-docker package publish

to build and publish all docker images that have changed

That's super useful thanks

no problem

(side note: the

package

step in the example above is redundant.. as

publish

will call

package

behind the scenes)