From 1369feba724177d0404f96e526d6403f9e8b5295 Mon Sep 17 00:00:00 2001
From: esc <esc@users.noreply.github.com>
Date: Fri, 11 Apr 2025 11:34:08 +0200
Subject: [PATCH 1/2] adding README

As title
---
 README.md | 4 ++++
 1 file changed, 4 insertions(+)
 create mode 100644 README.md

diff --git a/README.md b/README.md
new file mode 100644
index 0000000..fc30834
--- /dev/null
+++ b/README.md
@@ -0,0 +1,4 @@
+# numba-gha
+
+Common code and utilities for using GitHub Actions (GHA) in Numba and related
+projects.

From 69957c2925dc2d79a9ba84cfacd03cb5cbf744e4 Mon Sep 17 00:00:00 2001
From: esc <esc@users.noreply.github.com>
Date: Fri, 11 Apr 2025 12:32:27 +0200
Subject: [PATCH 2/2] add initial illustration of what a workflow generator
 could look like

As title
---
 numba_gha.py | 105 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 numba_gha.py

diff --git a/numba_gha.py b/numba_gha.py
new file mode 100644
index 0000000..9917cc0
--- /dev/null
+++ b/numba_gha.py
@@ -0,0 +1,105 @@
+from dataclasses import dataclass
+import textwrap
+
+import yaml
+
+# constants
+
+# projects
+NUMBA = "numba"
+LLVMLITE = "llvmlite"
+LLVMDVE = "llvmdev"
+
+# architectures
+WIN_64 = "win-64"
+LINUX_64 = "linux-64"
+
+# package flavours
+CONDA = "conda"
+WHEEL = "wheel"
+
+# snippets
+
+concurrency = textwrap.dedent("""
+    concurrency:
+        group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
+        cancel-in-progress: true
+""")
+
+# configuration classes
+
+@dataclass
+class AbstractCondaBuilder:
+    """ Abstract config generator. """
+
+    def yaml_generate(self):
+        config = \
+            {"name": self.name,
+                "on": {
+                    "pull-request": {
+                        "paths": [self.path],
+                    },
+                    "workflow_dispatch" : {
+                        "inputs": {
+                            "artifact_run_id": {
+                                "description": 'artifact workflow run ID (optional)',
+                                "required": "false",
+                                "type": "string",
+                            }
+                        }
+                    }
+                }
+            }
+        config.update(yaml.safe_load(concurrency))
+        return yaml.dump(config,
+                         default_flow_style=False,
+                         sort_keys=False,
+                         width=float("inf"),
+                        )
+
+    def fstring_generate(self):
+        config = textwrap.dedent(f"""
+            name: {self.name}
+
+            on:
+              pull_request:
+                paths:
+                  - {self.path}
+              workflow_dispatch:
+                inputs:
+                  llvmlite_run_id:
+                    description: 'llvmlite workflow run ID (optional)'
+                    required: false
+                    type: string
+
+            # Add concurrency control
+            concurrency:
+                group: ${{{{ github.workflow }}}}-${{{{ github.event.pull_request.number || github.sha }}}}
+                cancel-in-progress: true
+        """)
+        return config
+
+@dataclass
+class NumbaWin64CondaBuilder(AbstractCondaBuilder):
+    """ Concrete config for building conda packages on Win-64 for Numba. """
+    repo: str = NUMBA
+    arch: str = WIN_64
+    pack: str = CONDA
+
+    @property
+    def name(self):
+        return f"{self.repo}_{self.arch}_{self.pack}_builder"
+
+    @property
+    def path(self):
+        return f".github/workflows/{self.name}.yml"
+
+print(80 * "-")
+print("yaml_generate")
+print(80 * "-")
+print(NumbaWin64CondaBuilder().yaml_generate())
+print(80 * "-")
+print("fstring_generate")
+print(80 * "-")
+print(NumbaWin64CondaBuilder().fstring_generate())
+print(80 * "-")