use weakdeps wherever possible

[aplavin]

No behavior change on any Julia version, just transform some deps into weakdeps on 1.9+.

[jw3126]

Mhh what is the benefit of making stdlibs into extensions?
I wonder if this creates friction when you do something like cd Accessors; ]activate .; include("test/runtests.jl")

[aplavin]

Mhh what is the benefit of making stdlibs into extensions?

It's often done for foundational packages, so that loading times of any dependents and scripts are lower when these deps aren't needed. For large enduser focused packages this doesn't make any noticeable difference, but Accessors is potentially in the dependency tree of many projects.
Also see JuliaObjects/ConstructionBase.jl#81.

cd Accessors; ]activate .; include("test/runtests.jl")

Well, this doesn't work as-is anyway: it requires test dependencies from test/Project.toml, not just regular dependencies. So no extra friction: proper test env activation is needed anyway.

[jw3126]

Well, this doesn't work as-is anyway: it requires test dependencies from test/Project.toml, not just regular dependencies. So no extra friction: proper test env activation is needed anyway.

Ok that is a good argument 😄 What is your workflow for developing Accessors.jl? I do cd Accessors; ]activate .; include("test/runtests.jl") and have these test deps in my julia1.10 env anyway. At least for packages with not so many test deps as Accessors.jl has these days...

[aplavin]

What is your workflow for developing Accessors.jl?

Just run ]test for testing, typically with most of the include lines in runtests.jl commented out. It's quite fast in Julia versions from recent years.
For my own packages I often use TestItems.jl with vscode.

I do cd Accessors; ]activate .; include("test/runtests.jl")

Did you try TestEnv.jl? Great to activate the actual test env with everything properly setup.

and have these test deps in my julia1.10 env anyway.

Oh, I only have packages like Revise, BenchmarkTools, and Pluto in my global env, nothing test-related :)

[jw3126]

Ok thanks, we can merge this!