Remove all dev/ci requirements.txt and fully replace with pixi (#5939)

### What

* Fixes #5895

In the process cleans up quite a bit more ci to use the pixi environment
consequently.

Note that the process I followed here was essentially:
* pick a requirements.txt file
* check for each of its package if it's already in pixi
    * if not, try adding it as conda package to pixi
         * if not add it as pypi package to pixi
         * try documenting who uses it
* repeat until requirements.txt file is empty
* remove mentions of the requirements.txt file, ensure that python
invocations below are using pixi


### Checklist
* [x] I have read and agree to [Contributor
Guide](https://github.com/rerun-io/rerun/blob/main/CONTRIBUTING.md) and
the [Code of
Conduct](https://github.com/rerun-io/rerun/blob/main/CODE_OF_CONDUCT.md)
* [x] I've included a screenshot or gif (if applicable)
* [x] I have tested the web demo (if applicable):
* Using examples from latest `main` build:
[rerun.io/viewer](https://rerun.io/viewer/pr/5939?manifest_url=https://app.rerun.io/version/main/examples_manifest.json)
* Using full set of examples from `nightly` build:
[rerun.io/viewer](https://rerun.io/viewer/pr/5939?manifest_url=https://app.rerun.io/version/nightly/examples_manifest.json)
* [x] The PR title and labels are set such as to maximize their
usefulness for the next release's CHANGELOG
* [x] If applicable, add a new check to the [release
checklist](https://github.com/rerun-io/rerun/blob/main/tests/python/release_checklist)!

- [PR Build Summary](https://build.rerun.io/pr/5939)
- [Recent benchmark results](https://build.rerun.io/graphs/crates.html)
- [Wasm size tracking](https://build.rerun.io/graphs/sizes.html)

.github/workflows/auto_approve.yml

@@ -20,16 +20,9 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Setup Python
-        uses: actions/setup-python@v4
+      - uses: prefix-dev/[email protected]
         with:
-          python-version: 3.11
-
-      - name: Install dependencies
-        shell: bash
-        run: |
-          python3 -m pip install --upgrade pip
-          python3 -m pip install "PyGithub==1.59.0" "requests>=2.31,<3"
+          pixi-version: v0.18.0
 
       - name: Wait a few seconds
         shell: bash
@@ -40,7 +33,7 @@ jobs:
       - name: Approve workflow runs
         shell: bash
         run: |
-          python3 scripts/ci/approve_workflow_runs.py \
+          pixi run python scripts/ci/approve_workflow_runs.py \
             --github-token "${{ secrets.GITHUB_TOKEN }}" \
             --github-repository "rerun-io/rerun" \
             --pr-number "${{ github.event.pull_request.number || github.event.issue.number }}"

.github/workflows/auto_release_crates.yml

@@ -24,18 +24,10 @@ jobs:
         with:
           pixi-version: v0.19.0
 
-      - name: Install dependencies
-        shell: bash
-        run: |
-          python3 -m pip install -r scripts/ci/requirements-crates.txt
-
       - name: Update crate versions
-        shell: bash
-        run: |
-          python3 scripts/ci/crates.py version --bump prerelease
+        run: pixi run python scripts/ci/crates.py version --bump prerelease
 
       - run: pixi run toml-fmt
-        shell: bash
 
       - name: Get bumped version
         id: versioning

.github/workflows/checkboxes.yml

@@ -28,20 +28,14 @@ jobs:
         with:
           ref: ${{ github.event_name == 'pull_request' && github.event.pull_request.head.ref || '' }}
 
-      - name: Set up Python
-        uses: actions/setup-python@v5
+      - uses: prefix-dev/[email protected]
         with:
-          python-version: 3.11
-
-      - name: Install deps
-        shell: bash
-        run: |
-          python3 -m pip install PyGithub==1.59.0
+          pixi-version: v0.18.0
 
       - name: Check PR checkboxes
         shell: bash
         run: |
-          ./scripts/ci/check_pr_checkboxes.py \
+          pixi run ./scripts/ci/check_pr_checkboxes.py \
             --github-token ${{ secrets.GITHUB_TOKEN }} \
             --github-repository ${{ github.repository }} \
             --pr-number ${{ github.event.pull_request.number }}

.github/workflows/contrib_checks.yml

@@ -49,26 +49,12 @@ jobs:
       - uses: prefix-dev/[email protected]
         with:
           pixi-version: v0.19.0
-      - name: Set up Python
-        uses: actions/setup-python@v4
-        with:
-          python-version: "3.11"
-
-      - name: Install Python dependencies
-        shell: bash
-        run: |
-          pip install --upgrade pip
-          pip install -r rerun_py/requirements-lint.txt
 
       - name: Python format check
-        shell: bash
-        run: |
-          pixi run py-fmt-check
+        run: pixi run py-fmt-check
 
       - name: Lint Python
-        shell: bash
-        run: |
-          pixi run py-lint
+        run: pixi run py-lint
 
   py-test-docs:
     name: Test Python Docs
@@ -81,9 +67,7 @@ jobs:
           pixi-version: v0.19.0
 
       - name: Build via mkdocs
-        shell: bash
-        run: |
-          pixi run -e py-docs mkdocs build --strict -f rerun_py/mkdocs.yml
+        run: pixi run -e py-docs mkdocs build --strict -f rerun_py/mkdocs.yml
 
   no-codegen-changes:
     name: Check if running codegen would produce any changes
@@ -122,11 +106,6 @@ jobs:
         with:
           pixi-version: v0.19.0
 
-      - name: Set up Python
-        uses: actions/setup-python@v4
-        with:
-          python-version: "3.8"
-
       - name: Rerun lints
         run: pixi run lint-rerun
 

.github/workflows/contrib_rerun_py.yml

@@ -56,12 +56,6 @@ jobs:
         with:
           pixi-version: v0.19.0
 
-      # These should already be in the docker container, but run for good measure. A no-op install
-      # should be fast, and this way things don't break if we add new packages without rebuilding
-      # docker
-      - run: pip install -r scripts/ci/requirements.txt
-        shell: bash
-
       - name: Build Wheel
         uses: PyO3/maturin-action@v1
         with:
@@ -76,16 +70,6 @@ jobs:
             ${{ inputs.MATURIN_FEATURE_FLAGS }}
             --out dist
 
-      # Test the wheel
-      - name: Install wheel dependencies
-        # First we install the dependencies manually so we can use `--no-index` when installing the wheel.
-        # This needs to be a separate step for some reason or the following step fails
-        # TODO(jleibs): pull these deps from pyproject.toml
-        # TODO(jleibs): understand why deps can't be installed in the same step as the wheel
-        shell: bash
-        run: |
-          pip install attrs>=23.1.0 'numpy>=1.23,<2' pillow pyarrow>=14.0.2 pytest==7.1.2 torch==2.1.0 typing_extensions>=4.5
-
       - name: Get version
         id: get-version
         shell: bash
@@ -110,27 +94,27 @@ jobs:
 
       - name: Run Python unit-tests
         shell: bash
-        run: cd rerun_py/tests && pytest -c ../pyproject.toml
+        run: pixi run -e wheel-test cd rerun_py/tests && pixi run -e wheel-test pytest -c ../pyproject.toml
 
       - name: Run e2e test
         shell: bash
-        run: RUST_LOG=debug scripts/run_python_e2e_test.py --no-build # rerun-sdk is already built and installed
+        run: pixi run -e wheel-test RUST_LOG=debug scripts/run_python_e2e_test.py --no-build # rerun-sdk is already built and installed
 
       - name: Run tests/roundtrips.py
         shell: bash
         # --release so we can inherit from some of the artifacts that maturin has just built before
         # --target x86_64-unknown-linux-gnu because otherwise cargo loses the target cache… even though this is the target anyhow…
         # --no-py-build because rerun-sdk is already built and installed
         run: |
-          RUST_LOG=debug tests/roundtrips.py --release --target x86_64-unknown-linux-gnu --no-py-build
+          pixi run -e wheel-test RUST_LOG=debug tests/roundtrips.py --release --target x86_64-unknown-linux-gnu --no-py-build
 
       - name: Run docs/snippets/compare_snippet_output.py
         shell: bash
         # --release so we can inherit from some of the artifacts that maturin has just built before
         # --target x86_64-unknown-linux-gnu because otherwise cargo loses the target cache… even though this is the target anyhow…
         # --no-py-build because rerun-sdk is already built and installed
         run: |
-          RUST_LOG=debug docs/snippets/compare_snippet_output.py --release --target x86_64-unknown-linux-gnu --no-py-build
+          pixi run -e wheel-test RUST_LOG=debug docs/snippets/compare_snippet_output.py --release --target x86_64-unknown-linux-gnu --no-py-build
 
       - name: Cache RRD dataset
         id: dataset
@@ -146,4 +130,4 @@ jobs:
         run: |
           mkdir rrd
           pip install -r examples/python/structure_from_motion/requirements.txt
-          python3 examples/python/structure_from_motion/main.py --dataset colmap_fiat --resize 800x600 --save rrd/colmap_fiat.rrd
+          pixi run -e wheel-test python examples/python/structure_from_motion/main.py --dataset colmap_fiat --resize 800x600 --save rrd/colmap_fiat.rrd

.github/workflows/on_pull_request_target_contrib.yml

@@ -23,20 +23,14 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
-      - name: Set up Python
-        uses: actions/setup-python@v5
+      - uses: prefix-dev/[email protected]
         with:
-          python-version: 3.11
-
-      - name: Install deps
-        shell: bash
-        run: |
-          python3 -m pip install -r ./scripts/ci/requirements.txt
+          pixi-version: v0.19.0
 
       - name: Update PR description
         shell: bash
         run: |
-          ./scripts/ci/update_pr_body.py \
+          pixi run ./scripts/ci/update_pr_body.py \
             --github-token '${{ secrets.GITHUB_TOKEN }}' \
             --github-repository '${{ github.repository }}' \
             --pr-number '${{ github.event.pull_request.number }}'

.github/workflows/release.yml

@@ -78,16 +78,6 @@ jobs:
         with:
           node-version: 18
 
-      - name: Set up Python
-        uses: actions/setup-python@v5
-        with:
-          python-version: 3.11
-
-      - name: Install deps
-        shell: bash
-        run: |
-          python3 -m pip install -r ./scripts/ci/requirements-crates.txt
-
       - uses: prefix-dev/[email protected]
         with:
           pixi-version: v0.19.0
@@ -97,40 +87,40 @@ jobs:
         shell: bash
         run: |
           echo Check that the release version matches expected format…
-          python3 scripts/ci/crates.py check-git-branch-name
+          pixi run python scripts/ci/crates.py check-git-branch-name
 
           echo Parse the release version from the branch name…
           #   `release-0.8.1-meta.N` -> `0.8.1`
-          release_version=$(python3 scripts/ci/crates.py get-version --from git --finalize)
+          release_version=$(pixi run python scripts/ci/crates.py get-version --from git --finalize)
 
           echo "release_version: $release_version"
 
           echo Store version before the update, so we can later detect if it changed…
-          previous=$(python3 scripts/ci/crates.py get-version)
+          previous=$(pixi run python scripts/ci/crates.py get-version)
 
           echo If the version minus prerelease/build metadata is not the same as the release version, then update it.…
-          if [ $(python3 scripts/ci/crates.py get-version --finalize) != $release_version ]; then
-            python3 scripts/ci/crates.py version --exact $release_version
+          if [ $(pixi run python scripts/ci/crates.py get-version --finalize) != $release_version ]; then
+            pixi run python scripts/ci/crates.py version --exact $release_version
           fi
 
           echo If this is an 'rc', additionally set add '-rc.N'. This will also bump the 'N' if '-rc.N' is already set…
           if [ ${{ inputs.release-type }} = "rc" ]; then
-            python3 scripts/ci/crates.py version --bump prerelease --pre-id=rc
+            pixi run python scripts/ci/crates.py version --bump prerelease --pre-id=rc
           fi
 
           echo If this is an 'alpha', set the version to whatever is in the git branch name.…
           if [ ${{ inputs.release-type }} = "alpha" ]; then
-            python3 scripts/ci/crates.py version --exact $(python3 scripts/ci/crates.py get-version --from git)
+            pixi run python scripts/ci/crates.py version --exact $(pixi run python scripts/ci/crates.py get-version --from git)
           fi
 
           echo If this is a 'final', set the version to the final release version…
           if [ ${{ inputs.release-type }} = "final" ]; then
-            python3 scripts/ci/crates.py version --exact $release_version
+            pixi run python scripts/ci/crates.py version --exact $release_version
           fi
 
           echo Store version after the update, and the expected "final" release version…
-          current=$(python3 scripts/ci/crates.py get-version)
-          final=$(python3 scripts/ci/crates.py get-version --finalize)
+          current=$(pixi run python scripts/ci/crates.py get-version)
+          final=$(pixi run python scripts/ci/crates.py get-version --finalize)
 
           echo Output everything for use in other steps…
           echo "previous=$previous" >> "$GITHUB_OUTPUT"
@@ -385,20 +375,10 @@ jobs:
         with:
           node-version: 18
 
-      - name: Set up Python
-        uses: actions/setup-python@v5
-        with:
-          python-version: 3.11
-
       - uses: prefix-dev/[email protected]
         with:
           pixi-version: v0.19.0
 
-      - name: Install dependencies
-        shell: bash
-        run: |
-          python3 -m pip install -r scripts/ci/requirements-crates.txt
-
       - name: Commit new version
         shell: bash
         run: |
@@ -409,9 +389,9 @@ jobs:
           git pull --rebase
 
           # bump version and commit it
-          python3 scripts/ci/crates.py version --bump auto
+          pixi run python scripts/ci/crates.py version --bump auto
           pixi run toml-fmt
-          version="$(python3 scripts/ci/crates.py get-version)"
+          version="$(pixi run python scripts/ci/crates.py get-version)"
 
           git commit -am "Bump versions to $version"
           git push

.github/workflows/reusable_build_and_upload_wheels.yml

@@ -190,13 +190,6 @@ jobs:
         with:
           pixi-version: v0.19.0
 
-      - name: Install dependencies
-        shell: bash
-        run: |
-          rustup target add ${{ needs.set-config.outputs.TARGET }}
-          pip install -r rerun_py/requirements-build.txt
-          pip install google-cloud-storage==2.9.0
-
       - name: Get sha
         id: get-sha
         shell: bash
@@ -207,7 +200,7 @@ jobs:
       - name: Build
         shell: bash
         run: |
-          python3 scripts/ci/build_and_upload_wheels.py \
+          pixi run python scripts/ci/build_and_upload_wheels.py \
             --mode ${{ inputs.MODE }} \
             --target ${{ needs.set-config.outputs.TARGET }} \
             --dir commit/${{ steps.get-sha.outputs.sha }}/wheels \

.github/workflows/reusable_pr_summary.yml

@@ -31,10 +31,9 @@ jobs:
         with:
           ref: ${{ github.event_name == 'pull_request' && github.event.pull_request.head.ref || '' }}
 
-      - name: Set up Python
-        uses: actions/setup-python@v5
+      - uses: prefix-dev/[email protected]
         with:
-          python-version: 3.11
+          pixi-version: v0.18.0
 
       - id: "auth"
         uses: google-github-actions/auth@v2
@@ -47,14 +46,10 @@ jobs:
         with:
           version: ">= 363.0.0"
 
-      - name: Install deps
-        shell: bash
-        run: pip install google-cloud-storage Jinja2 PyGithub
-
       - name: Render HTML template
         shell: bash
         run: |
-          python scripts/ci/generate_pr_summary.py \
+          pixi run python scripts/ci/generate_pr_summary.py \
           --github-token ${{secrets.GITHUB_TOKEN}} \
           --github-repository ${GITHUB_REPOSITORY} \
           --pr-number ${{ inputs.PR_NUMBER }} \