chore/hollow out zarr3 (#780)

* Update pyproject.toml

* test against zarr-with-numcodecs branch

* weaken zarr dependency

* warn when importing from numcodecs.zarr3

* update pre-commit

* update importerror test

* adjust exception text test

* remove print statement

* fix numpy dep, remove direct references in pyproject.toml

* revert numpy dep changes

* revert revert of dep changes for test env

* drop hatch in favor of uv + parametrization in ci

* fix substitution syntax

* typo

* zarr.codecs entrypoints

* install crc32c with zarr

* remove zarr installation from main ci

* remove zarr from i386 workload

Author: d-v-b

.github/workflows/ci-i386.yml

@@ -46,15 +46,6 @@ jobs:
           uv pip install -v -e .[test,test_extras,msgpack,crc32c]
         shell: alpine.sh {0}
 
-
-      - name: Install zarr-python
-        # Since zarr v3 requires numpy >= 1.25, on Python 3.11 leave it out
-        # so we can have some tests of our minimum version of numpy (1.24)
-        if: matrix.python-version != '3.11'
-        run: uv add zarr>=3
-        shell: alpine.sh {0}
-
-
       - name: List installed packages
         run: uv pip list
         shell: alpine.sh {0}

.github/workflows/ci.yaml

@@ -52,12 +52,6 @@ jobs:
           export DISABLE_NUMCODECS_AVX2=""
           python -m pip install -v -e .[test,test_extras,msgpack,crc32c,pcodec,zfpy]
 
-      - name: Install zarr-python
-        # Since zarr v3 requires numpy >= 1.25, on Python 3.11 leave it out
-        # so we can have some tests of our minimum version of numpy (1.24)
-        if: matrix.python-version != '3.11'
-        run: python -m pip install zarr>=3
-
       - name: List installed packages
         run: python -m pip list
 
@@ -75,6 +69,8 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
+      matrix:
+        zarr-version: ["312", "313"]
 
     defaults:
       run:
@@ -93,10 +89,10 @@ jobs:
           pixi-version: v0.49.0
           cache: false
 
-      - name: List deps
+      - name: List installed packages
         shell: "bash -l {0}"
-        run: pixi run -e default hatch run test:list-deps
+        run: pixi run ls-deps-${{matrix.zarr-version}}
 
-      - name: Run tests
+      - name: Run tests with Zarr ${{ matrix.zarr-version }}
         shell: "bash -l {0}"
-        run: pixi run -e default hatch run test:test-zarr
+        run: pixi run test-zarr-${{ matrix.zarr-version }}

.pre-commit-config.yaml

@@ -30,4 +30,4 @@ repos:
       hooks:
       -   id: mypy
           args: [--config-file, pyproject.toml]
-          additional_dependencies: [numpy, pytest, crc32c, zfpy, 'zarr>=3']
+          additional_dependencies: [numpy, pytest, crc32c, zfpy, 'zarr>=3.1.3']