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create a development environment #10995

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Merged
keewis merged 8 commits into from
Jan 17, 2026
Merged

create a development environment #10995

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b27d43c
create a dev env
keewis Dec 8, 2025
6865e61
use black to autoformat ipython cells
keewis Dec 8, 2025
b7a26c2
add `pytest-accept` to auto-update doctest output
keewis Dec 8, 2025
ad18ca4
add ipdb
keewis Dec 8, 2025
9842cdc
Merge branch 'main' into dev-deps
dcherian Jan 16, 2026
8bfeefd
remove `ipdb`
keewis Jan 16, 2026
5d01d2b
use the dev env as the default env
keewis Jan 17, 2026
47a6263
Merge branch 'main' into dev-deps
keewis Jan 17, 2026
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19 changes: 19 additions & 0 deletions pixi.toml
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Expand Up @@ -286,6 +286,14 @@ cytoolz = "*"
[feature.release.tasks]
release-contributors = "python ci/release_contributors.py"

[feature.dev.dependencies]
ipython = ">=9.8.0,<10"
black = ">=25.1.0,<26"
ipdb = ">=0.13.13,<0.14"

@dcherian dcherian Dec 8, 2025 •
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I've started using pdbpp now, and really like it.

Here's a list from my personal dev tool yaml. Can we add

  • pdbpp
  • line_profiler
  • memory_profiler
  • memray
  • snakeviz
  • icecream
  • ipykernel
  • snoop (haven't tried this one yet, had forgotten about it but it looks great)

Is asv in the dev env?

@keewis keewis Dec 8, 2025

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hmm... looks like it might be better to have a profiling feature / env, in that case. I'd probably include pyinstrument in that list, as well. memory_profiler does not appear to be maintained anymore (not sure if that's a problem).

I don't think asv is anywhere yet, I believe. Is it possible to use that with pixi, or does that have its own dependency installation system? I think I remember it using conda envs before.

@dcherian dcherian Dec 8, 2025 •
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looks like it might be better to have a profiling feature / env

Why not just one big fat one? :P

memory_profiler does not appear to be maintained anymore (not sure if that's a problem).

Interesting. I still find %mprun -f in a notebook is very effective (recent example).

I don't think asv is anywhere yet, I believe. Is it possible to use that with pixi, or does that have its own dependency installation system

I think it still manages its own; but you can tell it to use rattler as a solver. I think it's useful to jsut add asv so we can run benchmarks.


[feature.dev.pypi-dependencies]
pytest-accept = ">=0.2.2, <0.3"

[environments]
# Testing
# test-just-xarray = { features = ["test"] } # https://github.com/pydata/xarray/pull/10888/files#r2511336147
Expand Down Expand Up @@ -386,3 +394,14 @@ doc = { features = [
] }
pre-commit = { features = ["pre-commit"], no-default-feature = true }
release = { features = ["release"], no-default-feature = true }
dev = { features = [

@ruben-arts ruben-arts Dec 10, 2025

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If you see this env as the "default" env for users, you can just rename it to default instead of dev. This would then allow users to run pixi run xxx or pixi shell to start this developer env. And in scripts you can still use -e to specify the more precise env.
If you still want to use the current default env for something else you can rename it with:

new-default = []

Also, you can use solve-group to specify that all these environments should have the same versions for the overlapping dependencies. These guarantees lower file system usage and reproducible environments between the different sets. That would look like this:

typing = { features = ["typing"], solve-group = "main" }
doc = { features = [
  "doc",
  "backends",
  "test",
  "accel",
  "viz",
  "extras",
], solve-group = "main"}
dev = { features = [ "py313",
  "test",
  "backends",
  "accel",
  "numba",
  "dask",
  "viz",
  "extras",
  "dev",
], solve-group = "main"}

If this works, pixi will guarantee that they all use the exact same python and other base dependencies. When they conflict in dependencies, you can still leave out the solve-group.

@VeckoTheGecko VeckoTheGecko Dec 10, 2025 •
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Thanks for taking the time to look at this @ruben-arts ! (and for responding to my Discord comment about this :)) ) . Also useful for another project I'm working on

"py313",
"test",
"backends",
"accel",
"numba",
"dask",
"viz",
"extras",
"dev",
] }
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