Build with pixi

Signed-off-by: Michael Carroll <[email protected]>

.gitattributes

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+# GitHub syntax highlighting
+pixi.lock linguist-language=YAML
+

.github/ci/colcon_defaults.yaml

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+ {
+  "build": {
+    "merge-install": true,
+    "cmake-args": [
+      "-GNinja",
+      "--no-warn-unused-cli",
+      "-DCMAKE_BUILD_TYPE=RelWithDebInfo",
+      "-DBUILD_DOCS:bool=false",
+      "-DSKIP_optix:bool=true"
+    ],
+    "event-handlers": [
+      "console_cohesion+",
+      "console_package_list+",
+    ]
+  },
+  "test": {
+    "merge-install": true,
+    "event-handlers": [
+      "console_direct+",
+    ]
+  }
+}

.github/workflows/pixi.yaml

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+name: Pixi-based CI
+on: [push, pull_request]
+
+jobs:
+  default:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: prefix-dev/[email protected]
+        with:
+          pixi-version: v0.6.0
+          cache: true
+      - run: pixi run sync collection-ionic.yaml
+      - run: pixi run build

.gitignore

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 *.pyc
+
+.pixi
+build
+log
+install
+src