Refactor package build workflow

* Merge llvmdev_win_builder.yml + llvmdev_win-64_conda_builder.yml into one
  to avoid code duplication
* Add input parameter to be able to select between recipes to build
* Rename flow to llvmdev_conda_builder.yml as it contains nothing specific
  to windows and the code is just a generic conda package builder
* Add ${{ matrix.recipe }}-${{ runner.os }} to upload name to better
  differentiate artifacts
* Remove "x" from `bash -elx {0}` as that pollutes the Action log due to
  the implicit `source "$CONDA/etc/profile.d/conda.sh` calls in every
  step.
* Set `run-post: false` to avoid setup-miniconda cleaning up the Github
  Action VM as that is wiped after the run anyways
* Run the flow if it gets changed in PRs, to see a public verfication
  that the changes are actually working

.github/workflows/llvmdev_build.yml

@@ -0,0 +1,108 @@
+name: llvmdev
+
+on:
+  pull_request:
+    paths:
+      - .github/workflows/llvmdev_build.yml
+  label:
+    types: [created]
+  workflow_dispatch:
+    inputs:
+      platform:
+        description: Conda Platform
+        default: linux-64
+        required: true
+        type: choice
+        options:
+          - linux-64
+          - linux-aarch64
+          - osx-64
+          - osx-arm64
+          - win-64
+      recipe:
+        description: Recipe to build
+        default: llvmdev
+        required: true
+        type: choice
+        options:
+          - llvmdev
+          - llvmdev_manylinux
+
+concurrency:
+  # Concurrency group that uses the workflow name and PR number if available
+  # or commit SHA as a fallback. If a new build is triggered under that
+  # concurrency group while a previous build is running it will be canceled.
+  # Repeated pushes to a PR will cancel all previous builds, while multiple
+  # merges to master will not cancel.
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
+  cancel-in-progress: true
+
+jobs:
+
+  check:
+    runs-on: ubuntu-24.04
+    outputs:
+      matrix: ${{ steps.evaluate.outputs.matrix }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.13'
+      - name: Evaluate
+        id: evaluate
+        env:
+          GITHUB_EVENT_NAME: ${{ github.event_name }}
+          GITHUB_LABEL_NAME: ${{ github.event.label.name }}
+          GITHUB_WORKFLOW_INPUT: ${{ toJson(github.event.inputs) }}
+        run: |
+          ./buildscripts/github/llvmdev_evaluate.py
+
+  build:
+    needs: check
+    name: ${{ matrix.recipe }}-${{ matrix.platform }}
+    runs-on: ${{ matrix.runner }}
+    defaults:
+      run:
+        shell: bash -el {0}
+    strategy:
+      matrix: ${{fromJson(needs.check.outputs.matrix)}}
+      fail-fast: false
+
+    steps:
+      - name: Clone repository
+        uses: actions/checkout@v4
+
+      - name: Setup Miniconda
+        uses: conda-incubator/setup-miniconda@v3
+        with:
+          auto-update-conda: true
+          auto-activate-base: true
+          activate-environment: ''
+          run-post: false
+
+      - name: Install conda-build
+        run: |
+          conda install conda-build
+
+      - name: Build conda package
+        env:
+          CONDA_CHANNEL_DIR: conda_channel_dir
+        run: |
+          set -x
+          mkdir "${CONDA_CHANNEL_DIR}"
+          conda build "./conda-recipes/${{ matrix.recipe }}" "--output-folder=${CONDA_CHANNEL_DIR}"
+          ls -lah "${CONDA_CHANNEL_DIR}"
+
+      - name: Upload conda package
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{ matrix.recipe }}-${{ runner.platform }}
+          path: conda_channel_dir
+          compression-level: 0
+          retention-days: 7
+          if-no-files-found: error
+
+      - name: Get Workflow Run ID
+        run: |
+          echo "Current workflow run ID: ${{ github.run_id }}"
+          echo "Use this ID when triggering llvmlite workflow"

buildscripts/github/llvmdev_evaluate.py

@@ -0,0 +1,69 @@
+#!/usr/bin/env python
+
+import json
+import os
+
+event = os.environ.get("GITHUB_EVENT_NAME")
+label = os.environ.get("GITHUB_LABEL_NAME")
+inputs = os.environ.get("GITHUB_WORKFLOW_INPUT")
+
+runner_mapping = {
+    "linux-64": "ubuntu-24.04",
+    "linux-aarch64": "ubuntu-24.04-arm",
+    "osx-64": "macos-13",
+    "osx-arm64": "macos-14",
+    "win-64": "windows-2019",
+}
+
+default_include = [
+    {   "runner": runner_mapping["linux-64"],
+        "platform": "linux-64",
+        "recipe": "llvmdev"},
+    {
+        "runner": runner_mapping["linux-aarch64"],
+        "platform": "linux-aarch64",
+        "recipe": "llvmdev",
+    },
+    {
+        "runner": runner_mapping["osx-arm64"],
+        "platform": "osx-arm64",
+        "recipe": "llvmdev",
+    },
+    {
+        "runner": runner_mapping["osx-arm64"],
+        "platform": "osx-arm64",
+        "recipe": "llvmdev_manylinux",
+    },
+    {   "runner": runner_mapping["win-64"],
+        "platform": "win-64",
+        "recipe": "llvmdev"},
+    {
+        "runner": runner_mapping["win-64"],
+        "platform": "win-64",
+        "recipe": "llvmdev_manylinux",
+    },
+]
+
+print(
+    f"event: '{event}', label: '{label}', inputs: '{inputs}', changed_files: '{changed_files}'"
+)
+
+if event == "pull_request":
+    # full matrix build
+    include = default_include
+elif event == "label":
+    # reduced matrix build
+    include = default_include[0:1]
+elif event == "workflow_dispatch":
+    # TBD
+    include = {}
+else:
+    include = {}
+matrix = {"include": include}
+
+print(f"matrix:\n {json.dumps(matrix, indent=4)}")
+
+#with open(os.environ["GITHUB_OUTPUT"], "a") as fh:
+#    print(f"{matrix}={json.dumps(matrix)}", file=fh)
+
+print(f"::set-output name=matrix::{json.dumps(matrix)}")